The Atlanta Eight-Hour Ozone Attainment Demonstration 

Appendix R 

MM5 Meteorological Model 

Performance Evaluation
In Support of Atlanta 8-hour Ozone State Implementation Plan 

Additional Evaluation of the 12-km grid resolution 

Meteorological Modeling over Georgia 

Prepared by: 

Data and Modeling Unit, 

Planning and Support Program, Air Protection Branch, 

Georgia Environmental Protection Division, 

4244 International Parkway, Atlanta, GA 30354 

October 15, 2007 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Table of Contents 

Background................................................................................................................................ 3 

Brief Overview of VISTAS Meteorological Modeling............................................................ 3 

Additional Model Performance Evaluation ............................................................................ 6 

Introduction........................................................................................................................... 6 

Methodology.......................................................................................................................... 6 

Discussion and conclusions ................................................................................................. 7 

References ............................................................................................................................... 11 

2 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Background 

Baron Advanced Meteorological System (BAMS) was awarded contract by Visibility 

Improvement State and Tribal Association of Southeast (VISTAS) to perform annual 

meteorological modeling simulations and associated technical analysis. This effort 

was intended to support activities focused on the development of emission control 

strategies aimed at ensuring better air quality/visibility in national parks and 

protected areas throughout the southeastern United States. These improvements are 

required to be made under provisions of the Regional Haze Rule. Details of this 

modeling effort, including model performance evaluation is available at 

http://www.baronams.com/projects/VISTAS/. 

The Georgia Environmental Protection Division (EPD) conducted an internal review of 

above mentioned meteorological model simulation. The review had two main 

objectives: 1) Conduct a visual and qualitative inspection of the modeling simulations 

to better understand the simulated meteorology, and 2) perform statistical analysis 

using software tools currently operational at Georgia EPD, and verify the overall 

assessment of the VISTAS contractor. This report provides a brief summary of the 

meteorological modeling effort and presents results of the statistical analysis 

performed by Georgia EPD. 

Figure 1 VISTAS 12-km resolution modeling grid. Dotted grid box represents the 

area for which model performance statistics have been computed 

Brief Overview of VISTAS Meteorological Modeling 

The annual modeling simulation conducted by BAMS utilizes version 3.6.1+ (Grell, 

1994, MPP version) of the fifth-Generation Penn State/NCAR Mesoscale Model (MM5) 

3 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

(Dudhia, 1989; Grell, 1994). Model configuration (Table 1) for this simulation was 

determined through sensitivity tests that were designed to gain a better 

understanding of the model response to the selection of PBL and land surface 

schemes. The results of these sensitivity tests are documented elsewhere (Olerud, 

2005). 

Table 1 Meteorological Model Physics Options and Related Modeling Parameters 

Grid resolution Physics options 36-km 12-km 

Nesting Type One-way One-way 

Numerical Time Step 90 sec 30 sec 

Cumulus parameterization Grell Grell 

PBL scheme ACM ACM 

Microphysics Reisner 1 Reisner 1 

Radiation scheme RRTM scheme RRTM scheme 

Land Surface scheme Pleim-Xiu Pleim-Xiu 

Convection scheme KF2 KF2 

Observation nudging None None 

3-D Grid analysis nudging Yes Yes 

3-D Grid analysis nudging 

time interval 3-hour 3-hour 

3-D Grid analysis nudging 

co-efficient 

GU=2.5x10-4

GV=2.5x10-4 

GT=2.5x10-4 

GQ=1.0x10-5

GU=1.0x10-4

GV=1.0x10-4 

GT=1.0x10-4 

GQ=1.0x10-5

Surface Analysis nudging Yes Yes 

Surface Analysis nudging 

time interval 3-hour 3-hour 

Surface Analysis nudging 

co-efficient 

GU=2.5x10-4 

GV=2.5x10-4 

GU=1.0x10-4 

GV=1.0x10-4 

BAMS conducted modeling simulations on a nested grid configuration, with two grids 

at 36 and 12-km grid resolution. These grids have a Lambert Conformal map 

projection with origin at 47N and 90W and true latitudes at 33 and 45N. The top of 

the modeling grid was fixed at 50mb. The modeling grids are shown in Figure 1. Grid 

configuration details have been provided in Tables 1 and 2. 

BAMS conducted extensive model performance evaluation. They made the following 

conclusions. 

1. Generally speaking, MM5 performed quite well at both 36-km and 12-km 

resolutions. Synoptic features were routinely accurately predicted, and the 

model showed considerable skill in replicating the state variables. Most of the 

time the model statistics fell within the “benchmarks” proposed by Emery et al. 

(2004) 

2. The model shows evidence of being adversely affected by poor soil 

initialization at times. This is particularly evident for September and November. 

The model is noticeably cold biased in the winter months. This appears to be 

related to the manner in which soil temperatures are initialized. 

3. The summertime diurnal cloud cycle appears to be out of phase with the 

observed cycle. The model maximizes cloud coverage at night and minimizes 

4 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

cloud coverage in the afternoon, while the observations indicate that the exact 

opposite should occur. 

4. The model noticeably overestimates the amount of summertime 

precipitation, but not the spatial coverage of measurable precipitation. 

5. Results of this effort should produce credible inputs for subsequent air 

quality modeling. 

Table 1 Modeling grid details: Number of grid cells and horizontal resolution 

36-km resolution 12-km resolution 

Model NLAYS 

NCOLS NROWS NCOLS NROWS 

MM5* 35 165 129 181 190 

CMAQ 19 149 113 169 178 

Table 2 Modeling grid details: Number of vertical layers and vertical resolution 

CMAQ Layer 

Number 

Sigma level of 

Layer Top Pres(mb) Height(m) Depth(m) 

Ground Surface 1.000 100.0 0 0 

1 0.995 995.5 36 36 

2 0.990 991.0 73 36 

3 0.985 986.5 109 37 

4 0.980 982.0 146 37 

5 0.970 973.0 220 74 

6 0.960 964.0 294 74 

7 0.950 955.0 369 75 

8 0.940 946.0 445 76 

0.930 973.0 

9 0.920 928.0 598 153 

0.910 919.0 

10 0.900 910.0 753 155 

0.880 892.0 

11 0.860 874.0 1071 318 

0.840 856.0 

12 0.820 838.0 1400 329 

0.800 820.0 

13 0.770 793.0 1828 428 

0.740 766.0 

14 0.700 730.0 2462 633 

0.650 685.0 

0.600 640.0 3448 986 

0.550 595.0 

15 

0.500 550.0 

0.450 505.0 5160 1712 

0.400 460.0 

0.350 415.0 

16 

0.300 370.0 

0.250 325.0 8127 2966 

0.200 280.0 

0.150 235.0 

0.100 190.0 

17 

0.050 145.0 

18 0.000 100.0 14662 6536 

5 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Additional Model Performance Evaluation 

Introduction 

Meteorological fields produced by MM5 are an input to the emissions and air quality 

models. Their accuracy is thus of considerable importance. To quantify how 

accurately a modeling simulation captures the observed atmospheric dynamics, 

predictions of key atmospheric variables are compared against land and/or satellite 

based observations. While performance evaluation methodology and goals may vary 

from application to another, performance evaluation is considered an integral part of 

any meteorological modeling study. 

Methodology 

U.S. EPA guidance (EPA, 2007) recognizes the complexity and importance of 

evaluating meteorological modeling results for air quality applications. It suggests 

“that states and tribes devote appropriate effort to the process of evaluating the 

meteorological inputs to the air quality model”. It recommends comparison of 

domain wide and/or regional summary statistics against previously generated 

meteorological model performance “benchmarks” Emery (2001) (Tables 5). 

Scientist and engineers around the world have extensively used the MM5 modeling 

system for atmospheric research and operational weather forecasting. Since MM5 

algorithms and modules have undergone significant peer review and testing, an 

“operational” evaluation of the modeling system is sufficient to serve as the basis of 

evaluating if the system is operating with sufficient reliability to be used in support 

of SIP development. Operational evaluation can be defined as process of evaluating 

how accurately a modeling simulation estimates observed quantities. In the case of a 

prognostic meteorological model, this amounts to a statistical analysis of model 

predictions and surface observations. 

We are using software package METSTAT developed by ENVIRON corporation for 

calculating model performance statistics. METSTAT computes domain wide surface 

statistics for temperature, wind speed and direction, and humidity. The metrics 

include: Bias Error (B), Gross Error (E) and Root Mean Square Error (RMSE), 

Systematic Root Mean Square Error (RMSEs), Unsystematic Root Mean Square Error 

(RMSEu) and Index Of Agreement (IOA). Mathematical formulation of these variables 

is provided in Table 4. The surface meteorological data for this analysis was 

obtained from http://dss.ucar.edu/datasets/ds472.0. 

While reviewing statistics, the reader is cautioned that summary statistics are useful 

in making only a general assessment about the adequacy of meteorological fields. 

For example, daily-mean performance statistics are likely to conceal important hourto-hour variations. Also, summary statistics depend upon the number of observationprediction pairs and generally improve with larger sampling sizes and longer 

averaging periods. This is because the probability of statistics being affected by 

extreme values is high in smaller sample sizes. These and other concerns have lead 

U.S. EPA to recommend that benchmarks proposed in Emery et al., (2001) should 

not be used in a “pass/fail” model, but only as a means of assessing general 

confidence in meteorological model output. 

6 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Table 4 Mathematical Formulation of Statistical Metrics Used for Evaluating 

Mesoscale Meteorological Model Performance 

Metrics Formulation 

Bias ∑∑( ) = =

= −

J

j

I

i

i

j

i

j OP

IJ

B

1 1

1

Gross Error ∑∑= =

= −

J

j

I

i

i

j

i

j OP

IJ

E

1 1

1

Root Mean Square Error ( )

2/1

1 1

1 2

⎥

⎦

⎤ ⎢

⎣

⎡ = ∑∑ − = =

J

j

I

i

i

j

i

j OP

IJ

RMSE

Systematic Root Mean Square Error ( )

2/1

1 1

2 ˆ 1 ⎥

⎦

⎤ ⎢

⎣

⎡ = ∑∑ − = =

J

j

I

i

i

j

i

S j OP

IJ

RMSE

Unsystematic Root Mean Square Error ( )

2/1

1 1

2 ˆ 1 ⎥

⎦

⎤ ⎢

⎣

⎡ = ∑∑ − = =

J

j

I

i

i

j

i

u j PP

IJ

RMSE

Index of Agreement 

⎥

⎥

⎥

⎥

⎦

⎤

⎢

⎢

⎢

⎢

⎣

⎡

−+−

−=

∑∑= =

J

j

I

i

o

i

jo

i

j MOMP

RMSEIJ IOA

1 1

2 . 1

Table 5 Statistical Benchmarks for Mesoscale Meteorological Models 

Statistical Measure Benchmark 

Wind Speed Bias (m/s) <±0.5 

Wind Speed Total RMSE (m/s) 2.0 

Wind Speed Index of Agreement 0.6 

Wind Direction Gross Error (degree) 30.0 

Wind Direction Bias (degree) <±10.0 

Temperature Bias (Kelvin) <±0.5 

Temperature Gross Error (degree) 2.0 

Temperature Index of Agreement 0.8 

Humidity Bias (g/kg) <±1.0 

Humidity Gross Error (g/kg) 2.0 

Humidity Index of Agreement 0.6 

A graphical summary of the daily and hourly mean performance statistics for the 12-

km grid resolution modeling simulation is provided in the remainder of this report. 

Monthly averaged statistics have also been provided in Table 6. Statistics have been 

computed at monitoring stations that are located within the box shown in Figure 1. 

These stations are identified in Table 8. 

Discussion and conclusions 

The results of the statistical analysis are consistent with findings of the contractor 

discussed earlier. Overall, the simulation is able to capture meteorological conditions 

observed during the study period with the adequate level of accuracy. Performance 

statistics for most days are within the benchmarks proposed by Emery (2004) and 

suggested by U.S. EPA (Table 1). Monthly average statistics reveal under prediction 

in humidity from May through November, and an over prediction in temperature 

during the summer months (May through September). The simulation tends to over 

7 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

predict day-time and night-time temperature, and consistently over-predicts nighttime wind speed. However, the magnitude of these under/over predictions remains 

small. Deficiencies in physical parameterization (planetary boundary layer, surface 

heat, and moisture budgets) at smaller scales, together with the issue of data 

scarcity and representatives might produce verification scores that do not adequately 

represent the quality of meteorological modeling simulation (Mass, 2002). It should 

also be pointed out that air quality model performance evaluation serves as an 

additional check on how accurately the meteorological model was able to capture 

the observed atmospheric dynamics during a particular time period. In an unlikely 

event of an unusually poor air quality model performance, it is reasonable to further 

investigate the performance of meteorological model. 

Figure 2 Monthly averaged Bias statistics for 2-m temperature and humidity 

Monthly Average Temperature Bias

-0.80

-0.60

-0.40

-0.20

0.00

0.20

0.40

0.60

January

Feburary

March

April

May

June

July

August

September

October

November

December

Bias (degree K)

Monthly Average Humidity Bias

-1.00

-0.80

-0.60

-0.40

-0.20

0.00

0.20

0.40

January

Feburary

March

April

May

June

July

August

September

October

NovemberDecember

Bias (g/kg)

8 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Mete

Table 6: Monthly averaged statistics for the region of the 12-km modeling domain shown in Figure 1 9 Data & 
Additional Evaluation of the 12-km grid resolution Mete

Table 7: List of Peer-Reviewed Journal Articles Related to Mesoscale Meteorological Performance 

Emery et al., 

2001 Rao et al., 2001 Zhong et al., 2003 (a) light winds; (b) strong winds Ca

Benchmark RAMS3b MM5 RAMS (a) MM5 (a) Meso-Eta (a) RAMS (b) MM5 (b) Meso-Eta (b) RA

Temperature Bias (degree C) ±0.5 1.38 -0.93 -0.74 -0.70 -1.77 -1.78 -0.74 -2.14 Temperature Error (degree C) 2.0 2.29 2.22 - - - - - - Temperature RMSE (degree C) - 3.03 2.89 2.50 2.17 2.57 2.62 1.97 2.99 3.Mixing Ratio Bias (g/kg) ±1.0 - - - - - - - - Mixing Ratio Error (g/kg) 2.0 - - - - - - - - Mixing Ratio RMSE (g/kg) - - - - - - - - - 1.Wind Speed Bias (m/s) - 0.61 0.28 0.66 0.46 0.13 0.35 -0.26 1.64 Wind Speed Error (m/s) - 1.41 1.34 - - - - - - Wind Speed RMSE (m/s) 2.0 1.80 1.71 1.63 1.57 1.41 2.00 1.98 2.56 1.5Wind Direction Bias (degree) - - - -0.43 9.91 0.85 -1.11 4.10 3.89 Wind Direction Error (degree) 20 - - - - - - - - Wind Direction RMSE (degree) - - - 68.37 66.66 69.49 64.58 72.98 61.02 

Castelli, S. T., S. Morelli, D. Anfossi, J. Carvalho, and S. Z. Sajani, 2004: Inter-comparison of two models, ETA and RAMS, with TRA

Fluid Mechanics, 4, 157-196 

Emery, C. et al., 2001: Enhanced meteorological modeling and performance evaluation for two Texas ozone episodes. Prepared for the 

Commission, Prepared by ENVIRON International Corporation, Novato, CA. 

Hanna, S. R. and R. X. Yang, 2001: Evaluations of mesoscale models' simulations of near-surface winds, temperature gradients, and m

Meteorology, 40, 1095-1104 

Hogrefe, C., S. T. Rao, P. Kasibhatla, G. Kallos, C. J. Tremback, W. Hao, D. Olerud, A. Xiu, J. McHenry, and K. Alapaty, 2001: Evalu

photochemical modeling systems: Part I - meteorological predictions. Atmospheric Environment, 35, 4159-4174 

Zhong, S. Y. and J. Fast, 2003: An evaluation of the MM5, RAMS, and Meso-Eta models at sub-kilometer resolution using VTMX fieMonthly Weather Review, 131, 1301-1322 10 Data & 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

References 

Abraczinskas, M. A., D. T. Olerud and A. P. Sims, 2004: Characterizing annual 

meteorological modeling performance for visibility improvement strategy modeling in 

the southeastern US. Presented at the 13th Conference on the Application of Air 

Pollution Meteorology with the Air and Waste management Association, Vancouver, 

BC, Canada 

Emery, C., E. Tai, and G. Yarwood, 2001: Enhanced meteorological modeling and 

performance evaluation for two Texas episodes, A report prepared for the Texas 

Natural Resources Conservation Commission (TNRCC), ENVIRON International 

Corporation, Novato, CA 

Mass, C. F., D. Ovens, K. Westrick, B. A. Colle, 2002, Does increasing horizontal 

resolution produce more skillful forecast. Bulletin of American Meteorological Society, 

83, 407-430 

USEPA, 2007: Guidance on the Use of Models and Other Analyses for Demonstrating 

Attainment of Air Quality Goals for Ozone, PM2.5, and Regional Haze. United States 

Environmental Protection Agency (USEPA), Research Triangle Park, NC, EPA-454/B07-002 

11 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Observed/Predicted Windspeed

0

2

4

6

 1/01 1/02 1/03 1/04 1/05 Average

m/s

Wind Spd Mean OBS Wind Spd Mean PRD

Bias/Gross Error Windspeed

0

0.5

1

1.5

 1/01 1/02 1/03 1/04 1/05 Average

m/s

Wind Spd Bias Wind Spd Gross Error

RMSE Windspeed

0

0.5

1

1.5

2

 1/01 1/02 1/03 1/04 1/05 Average

m/s

Wind Spd RMSE Wind Spd Sys RMSE Wind Spd Unsys RMSE

IOA Windspeed

0

0.5

1

 1/01 1/02 1/03 1/04 1/05 Average

Wind Spd IOA

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 1/01 1/02 1/03 1/04 1/05 Average

deg

Wind Dir Mean OBS Wind Dir Mean PRD

Bias/Gross Error Wind Direction

-90

-60

-30

0

30

60

90

 1/01 1/02 1/03 1/04 1/05 Average

deg

Wind Dir Bias Wind Dir Gross Error

12 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Observed/Predicted Temperature

269

270

271

272

273

274

275

276

 1/01 1/02 1/03 1/04 1/05 Average

K

Temp Mean OBS Temp Mean PRD

Bias/Gross Error Temperature

-2

-1

0

1

2

3

4

 1/01 1/02 1/03 1/04 1/05 Average

K

Temp Bias Temp Gross Error

RMSE Temperature

0

1

2

3

4

5

 1/01 1/02 1/03 1/04 1/05 Average

K

Temp RMSE Temp Sys RMSE Temp Unsys RMSE

IOA Temperature

0

0.2

0.4

0.6

0.8

1

 1/01 1/02 1/03 1/04 1/05 Average

Temp IOA

13 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Observed/Predicted Humidity

0

0.5

1

1.5

2

2.5

3

3.5

 1/01 1/02 1/03 1/04 1/05 Average

g/kg

Humdity Mean OBS Humdity Mean PRD

Bias/Gross Error Humidity

-0.2

-0.1

0

0.1

0.2

0.3

0.4

0.5

0.6

 1/01 1/02 1/03 1/04 1/05 Average

g/kg

Humdity Bias Humdity Gross Error

RMSE Humidity

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

 1/01 1/02 1/03 1/04 1/05 Average

g/kg

Humdity RMSE Humdity Sys RMSE Humdity Unsys RMSE

IOA Humidity

0

0.2

0.4

0.6

0.8

1

 1/01 1/02 1/03 1/04 1/05 Average

Humdity IOA

14 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Observed/Predicted Windspeed

0

2

4

6

 1/06 1/07 1/08 1/09 1/10 Average

m/s

Wind Spd Mean OBS Wind Spd Mean PRD

Bias/Gross Error Windspeed

0

0.5

1

1.5

2

 1/06 1/07 1/08 1/09 1/10 Average

m/s

Wind Spd Bias Wind Spd Gross Error

RMSE Windspeed

0

1

2

3

 1/06 1/07 1/08 1/09 1/10 Average

m/s

Wind Spd RMSE Wind Spd Sys RMSE Wind Spd Unsys RMSE

IOA Windspeed

0

0.5

1

 1/06 1/07 1/08 1/09 1/10 Average

Wind Spd IOA

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 1/06 1/07 1/08 1/09 1/10 Average

deg

Wind Dir Mean OBS Wind Dir Mean PRD

Bias/Gross Error Wind Direction

-90

-60

-30

0

30

60

90

 1/06 1/07 1/08 1/09 1/10 Average

deg

Wind Dir Bias Wind Dir Gross Error

15 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Observed/Predicted Temperature

268

270

272

274

276

278

280

282

284

286

 1/06 1/07 1/08 1/09 1/10 Average

K

Temp Mean OBS Temp Mean PRD

Bias/Gross Error Temperature

-3

-2

-1

0

1

2

3

4

 1/06 1/07 1/08 1/09 1/10 Average

K

Temp Bias Temp Gross Error

RMSE Temperature

0

1

2

3

4

5

 1/06 1/07 1/08 1/09 1/10 Average

K

Temp RMSE Temp Sys RMSE Temp Unsys RMSE

IOA Temperature

0

0.2

0.4

0.6

0.8

1

 1/06 1/07 1/08 1/09 1/10 Average

Temp IOA

16 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Observed/Predicted Humidity

0

1

2

3

4

5

6

7

 1/06 1/07 1/08 1/09 1/10 Average

g/kg

Humdity Mean OBS Humdity Mean PRD

Bias/Gross Error Humidity

0

0.2

0.4

0.6

0.8

1

 1/06 1/07 1/08 1/09 1/10 Average

g/kg

Humdity Bias Humdity Gross Error

RMSE Humidity

0

0.2

0.4

0.6

0.8

1

1.2

1.4

 1/06 1/07 1/08 1/09 1/10 Average

g/kg

Humdity RMSE Humdity Sys RMSE Humdity Unsys RMSE

IOA Humidity

0

0.2

0.4

0.6

0.8

1

 1/06 1/07 1/08 1/09 1/10 Average

Humdity IOA

17 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Observed/Predicted Windspeed

0

1

2

3

4

 1/11 1/12 1/13 1/14 1/15 Average

m/s

Wind Spd Mean OBS Wind Spd Mean PRD

Bias/Gross Error Windspeed

0

0.5

1

1.5

2

 1/11 1/12 1/13 1/14 1/15 Average

m/s

Wind Spd Bias Wind Spd Gross Error

RMSE Windspeed

0

0.5

1

1.5

2

 1/11 1/12 1/13 1/14 1/15 Average

m/s

Wind Spd RMSE Wind Spd Sys RMSE Wind Spd Unsys RMSE

IOA Windspeed

0

0.5

1

 1/11 1/12 1/13 1/14 1/15 Average

Wind Spd IOA

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 1/11 1/12 1/13 1/14 1/15 Average

deg

Wind Dir Mean OBS Wind Dir Mean PRD

Bias/Gross Error Wind Direction

-90

-60

-30

0

30

60

90

 1/11 1/12 1/13 1/14 1/15 Average

deg

Wind Dir Bias Wind Dir Gross Error

18 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Observed/Predicted Temperature

274

276

278

280

282

284

286

288

 1/11 1/12 1/13 1/14 1/15 Average

K

Temp Mean OBS Temp Mean PRD

Bias/Gross Error Temperature

-3

-2

-1

0

1

2

3

 1/11 1/12 1/13 1/14 1/15 Average

K

Temp Bias Temp Gross Error

RMSE Temperature

0

0.5

1

1.5

2

2.5

3

3.5

 1/11 1/12 1/13 1/14 1/15 Average

K

Temp RMSE Temp Sys RMSE Temp Unsys RMSE

IOA Temperature

0

0.2

0.4

0.6

0.8

1

 1/11 1/12 1/13 1/14 1/15 Average

Temp IOA

19 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Observed/Predicted Humidity

0

1

2

3

4

5

6

7

8

 1/11 1/12 1/13 1/14 1/15 Average

g/kg

Humdity Mean OBS Humdity Mean PRD

Bias/Gross Error Humidity

0

0.2

0.4

0.6

0.8

1

 1/11 1/12 1/13 1/14 1/15 Average

g/kg

Humdity Bias Humdity Gross Error

RMSE Humidity

0

0.2

0.4

0.6

0.8

1

1.2

 1/11 1/12 1/13 1/14 1/15 Average

g/kg

Humdity RMSE Humdity Sys RMSE Humdity Unsys RMSE

IOA Humidity

0

0.2

0.4

0.6

0.8

1

 1/11 1/12 1/13 1/14 1/15 Average

Humdity IOA

20 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Observed/Predicted Windspeed

0

1

2

3

4

 1/16 1/17 1/18 1/19 1/20 Average

m/s

Wind Spd Mean OBS Wind Spd Mean PRD

Bias/Gross Error Windspeed

0

0.5

1

1.5

2

 1/16 1/17 1/18 1/19 1/20 Average

m/s

Wind Spd Bias Wind Spd Gross Error

RMSE Windspeed

0

1

2

3

 1/16 1/17 1/18 1/19 1/20 Average

m/s

Wind Spd RMSE Wind Spd Sys RMSE Wind Spd Unsys RMSE

IOA Windspeed

0

0.5

1

 1/16 1/17 1/18 1/19 1/20 Average

Wind Spd IOA

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 1/16 1/17 1/18 1/19 1/20 Average

deg

Wind Dir Mean OBS Wind Dir Mean PRD

Bias/Gross Error Wind Direction

-90

-60

-30

0

30

60

90

 1/16 1/17 1/18 1/19 1/20 Average

deg

Wind Dir Bias Wind Dir Gross Error

21 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Observed/Predicted Temperature

276

278

280

282

284

286

 1/16 1/17 1/18 1/19 1/20 Average

K

Temp Mean OBS Temp Mean PRD

Bias/Gross Error Temperature

-2

-1

0

1

2

3

4

 1/16 1/17 1/18 1/19 1/20 Average

K

Temp Bias Temp Gross Error

RMSE Temperature

0

0.5

1

1.5

2

2.5

3

3.5

4

 1/16 1/17 1/18 1/19 1/20 Average

K

Temp RMSE Temp Sys RMSE Temp Unsys RMSE

IOA Temperature

0

0.2

0.4

0.6

0.8

1

 1/16 1/17 1/18 1/19 1/20 Average

Temp IOA

22 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Observed/Predicted Humidity

0

1

2

3

4

5

6

7

8

 1/16 1/17 1/18 1/19 1/20 Average

g/kg

Humdity Mean OBS Humdity Mean PRD

Bias/Gross Error Humidity

-0.4

-0.2

0

0.2

0.4

0.6

0.8

1

 1/16 1/17 1/18 1/19 1/20 Average

g/kg

Humdity Bias Humdity Gross Error

RMSE Humidity

0

0.2

0.4

0.6

0.8

1

1.2

1.4

 1/16 1/17 1/18 1/19 1/20 Average

g/kg

Humdity RMSE Humdity Sys RMSE Humdity Unsys RMSE

IOA Humidity

0

0.2

0.4

0.6

0.8

1

 1/16 1/17 1/18 1/19 1/20 Average

Humdity IOA

23 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Observed/Predicted Windspeed

0

1

2

3

4

 1/21 1/22 1/23 1/24 1/25 Average

m/s

Wind Spd Mean OBS Wind Spd Mean PRD

Bias/Gross Error Windspeed

0

0.5

1

1.5

2

 1/21 1/22 1/23 1/24 1/25 Average

m/s

Wind Spd Bias Wind Spd Gross Error

RMSE Windspeed

0

1

2

3

 1/21 1/22 1/23 1/24 1/25 Average

m/s

Wind Spd RMSE Wind Spd Sys RMSE Wind Spd Unsys RMSE

IOA Windspeed

0

0.5

1

 1/21 1/22 1/23 1/24 1/25 Average

Wind Spd IOA

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 1/21 1/22 1/23 1/24 1/25 Average

deg

Wind Dir Mean OBS Wind Dir Mean PRD

Bias/Gross Error Wind Direction

-90

-60

-30

0

30

60

90

 1/21 1/22 1/23 1/24 1/25 Average

deg

Wind Dir Bias Wind Dir Gross Error

24 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Observed/Predicted Temperature

278

280

282

284

286

288

290

292

 1/21 1/22 1/23 1/24 1/25 Average

K

Temp Mean OBS Temp Mean PRD

Bias/Gross Error Temperature

-2

-1

0

1

2

3

 1/21 1/22 1/23 1/24 1/25 Average

K

Temp Bias Temp Gross Error

RMSE Temperature

0

0.5

1

1.5

2

2.5

3

3.5

 1/21 1/22 1/23 1/24 1/25 Average

K

Temp RMSE Temp Sys RMSE Temp Unsys RMSE

IOA Temperature

0

0.2

0.4

0.6

0.8

1

 1/21 1/22 1/23 1/24 1/25 Average

Temp IOA

25 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Observed/Predicted Humidity

0

2

4

6

8

10

12

 1/21 1/22 1/23 1/24 1/25 Average

g/kg

Humdity Mean OBS Humdity Mean PRD

Bias/Gross Error Humidity

0

0.2

0.4

0.6

0.8

1

1.2

1.4

 1/21 1/22 1/23 1/24 1/25 Average

g/kg

Humdity Bias Humdity Gross Error

RMSE Humidity

0

0.5

1

1.5

2

 1/21 1/22 1/23 1/24 1/25 Average

g/kg

Humdity RMSE Humdity Sys RMSE Humdity Unsys RMSE

IOA Humidity

0

0.2

0.4

0.6

0.8

1

 1/21 1/22 1/23 1/24 1/25 Average

Humdity IOA

26 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

27 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

28 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

29 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

30 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

31 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

32 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

33 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

34 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

35 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

36 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

37 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

38 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

39 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

40 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

41 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

42 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

43 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

44 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

45 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

46 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

47 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

48 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

49 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

50 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

51 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

52 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

53 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

54 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

55 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

56 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

57 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

58 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

59 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

60 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

61 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

62 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

63 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

64 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

65 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

66 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

67 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

68 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

69 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

70 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

71 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

72 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

73 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

74 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

75 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

76 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

77 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

78 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

79 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

80 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 1 

Observed/Predicted Windspeed

0

2

4

6

 5/21 5/22 5/23 5/24 5/25 Average

m/s

Wind Spd Mean OBS Wind Spd Mean PRD

Bias/Gross Error Windspeed

0

0.5

1

1.5

2

 5/21 5/22 5/23 5/24 5/25 Average

m/s

Wind Spd Bias Wind Spd Gross Error

RMSE Windspeed

0

0.5

1

1.5

2

 5/21 5/22 5/23 5/24 5/25 Average

m/s

Wind Spd RMSE Wind Spd Sys RMSE Wind Spd Unsys RMSE

IOA Windspeed

0

0.5

1

 5/21 5/22 5/23 5/24 5/25 Average

Wind Spd IOA

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 5/21 5/22 5/23 5/24 5/25 Average

deg

Wind Dir Mean OBS Wind Dir Mean PRD

Bias/Gross Error Wind Direction

-90

-60

-30

0

30

60

90

 5/21 5/22 5/23 5/24 5/25 Average

deg

Wind Dir Bias Wind Dir Gross Error

81 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 2 

Observed/Predicted Windspeed

0

2

4

6

8

 5/21 5/22 5/23 5/24 5/25

m/s

ObsWndSpd PrdWndSpd 

Bias Windspeed

-2

-1

0

1

2

3

 5/21 5/22 5/23 5/24 5/25

m/s

BiasWndSpd

RMSE Windspeed

0

0.5

1

1.5

2

2.5

 5/21 5/22 5/23 5/24 5/25

m/s

RMSEWndSpd RMSESWndSp RMSEUWndSp

IOA Windspeed

0

0.2

0.4

0.6

0.8

1

 5/21 5/22 5/23 5/24 5/25

IOAWndSpd 

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 5/21 5/22 5/23 5/24 5/25

deg

ObsWndDir PrdWndDir 

Bias Wind Direction

-90

-60

-30

0

30

60

90

 5/21 5/22 5/23 5/24 5/25

deg

BiasWndDir

82 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 3 

Observed/Predicted Temperature

284

286

288

290

292

294

296

 5/21 5/22 5/23 5/24 5/25 Average

K

Temp Mean OBS Temp Mean PRD

Bias/Gross Error Temperature

0

0.5

1

1.5

2

 5/21 5/22 5/23 5/24 5/25 Average

K

Temp Bias Temp Gross Error

RMSE Temperature

0

0.5

1

1.5

2

2.5

3

 5/21 5/22 5/23 5/24 5/25 Average

K

Temp RMSE Temp Sys RMSE Temp Unsys RMSE

IOA Temperature

0

0.2

0.4

0.6

0.8

1

 5/21 5/22 5/23 5/24 5/25 Average

Temp IOA

83 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 4 

Observed/Predicted Temperature

270

275

280

285

290

295

300

305

 5/21 5/22 5/23 5/24 5/25

K

ObsTemp PrdTemp 

Bias Temperature

-3

-2

-1

0

1

2

3

4

 5/21 5/22 5/23 5/24 5/25

K

BiasTemp 

RMSE Temperature

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

 5/21 5/22 5/23 5/24 5/25

K

RMSETemp RMSESTemp RMSEUTemp 

IOA Temperature

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 5/21 5/22 5/23 5/24 5/25

IOATemp 

84 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 5 

Observed/Predicted Humidity

0

2

4

6

8

10

12

 5/21 5/22 5/23 5/24 5/25 Average

g/kg

Humdity Mean OBS Humdity Mean PRD

Bias/Gross Error Humidity

-1

-0.5

0

0.5

1

1.5

 5/21 5/22 5/23 5/24 5/25 Average

g/kg

Humdity Bias Humdity Gross Error

RMSE Humidity

0

0.2

0.4

0.6

0.8

1

1.2

1.4

1.6

 5/21 5/22 5/23 5/24 5/25 Average

g/kg

Humdity RMSE Humdity Sys RMSE Humdity Unsys RMSE

IOA Humidity

0

0.2

0.4

0.6

0.8

1

 5/21 5/22 5/23 5/24 5/25 Average

Humdity IOA

85 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 6 

Predicted/Observed Humidity

0

2

4

6

8

10

12

14

 5/21 5/22 5/23 5/24 5/25

g/kg

ObsHum PrdHum 

Bias Humidity

-1.5

-1

-0.5

0

0.5

1

1.5

2

 5/21 5/22 5/23 5/24 5/25

g/kg

BiasHum 

RMSE Humidity

0

0.5

1

1.5

2

2.5

 5/21 5/22 5/23 5/24 5/25

g/kg

RMSEHum RMSESHum RMSEUHum 

IOA Humidity

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 5/21 5/22 5/23 5/24 5/25

IOAHum 

86 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 7 

Observed/Predicted Windspeed

0

1

2

3

4

 5/26 5/27 5/28 5/29 5/30 Average

m/s

Wind Spd Mean OBS Wind Spd Mean PRD

Bias/Gross Error Windspeed

0

0.5

1

1.5

2

 5/26 5/27 5/28 5/29 5/30 Average

m/s

Wind Spd Bias Wind Spd Gross Error

RMSE Windspeed

0

0.5

1

1.5

2

 5/26 5/27 5/28 5/29 5/30 Average

m/s

Wind Spd RMSE Wind Spd Sys RMSE Wind Spd Unsys RMSE

IOA Windspeed

0

0.5

1

 5/26 5/27 5/28 5/29 5/30 Average

Wind Spd IOA

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 5/26 5/27 5/28 5/29 5/30 Average

deg

Wind Dir Mean OBS Wind Dir Mean PRD

Bias/Gross Error Wind Direction

-90

-60

-30

0

30

60

90

 5/26 5/27 5/28 5/29 5/30 Average

deg

Wind Dir Bias Wind Dir Gross Error

87 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 8 

Observed/Predicted Windspeed

0

2

4

6

 5/26 5/27 5/28 5/29 5/30

m/s

ObsWndSpd PrdWndSpd 

Bias Windspeed

-2

-1

0

1

2

 5/26 5/27 5/28 5/29 5/30

m/s

BiasWndSpd

RMSE Windspeed

0

1

2

3

 5/26 5/27 5/28 5/29 5/30

m/s

RMSEWndSpd RMSESWndSp RMSEUWndSp

IOA Windspeed

0

0.2

0.4

0.6

0.8

1

 5/26 5/27 5/28 5/29 5/30

IOAWndSpd 

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 5/26 5/27 5/28 5/29 5/30

deg

ObsWndDir PrdWndDir 

Bias Wind Direction

-90

-60

-30

0

30

60

90

 5/26 5/27 5/28 5/29 5/30

deg

BiasWndDir

88 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 9 

Observed/Predicted Temperature

295.5

296

296.5

297

297.5

 5/26 5/27 5/28 5/29 5/30 Average

K

Temp Mean OBS Temp Mean PRD

Bias/Gross Error Temperature

0

0.5

1

1.5

2

2.5

 5/26 5/27 5/28 5/29 5/30 Average

K

Temp Bias Temp Gross Error

RMSE Temperature

0

0.5

1

1.5

2

2.5

3

 5/26 5/27 5/28 5/29 5/30 Average

K

Temp RMSE Temp Sys RMSE Temp Unsys RMSE

IOA Temperature

0

0.2

0.4

0.6

0.8

1

 5/26 5/27 5/28 5/29 5/30 Average

Temp IOA

89 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 10 

Observed/Predicted Temperature

280

285

290

295

300

305

 5/26 5/27 5/28 5/29 5/30

K

ObsTemp PrdTemp 

Bias Temperature

-1

-0.5

0

0.5

1

1.5

2

2.5

3

 5/26 5/27 5/28 5/29 5/30

K

BiasTemp 

RMSE Temperature

0

0.5

1

1.5

2

2.5

3

3.5

4

 5/26 5/27 5/28 5/29 5/30

K

RMSETemp RMSESTemp RMSEUTemp 

IOA Temperature

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 5/26 5/27 5/28 5/29 5/30

IOATemp 

90 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 11 

Observed/Predicted Humidity

0

2

4

6

8

10

12

14

16

 5/26 5/27 5/28 5/29 5/30 Average

g/kg

Humdity Mean OBS Humdity Mean PRD

Bias/Gross Error Humidity

-1.5

-1

-0.5

0

0.5

1

1.5

2

 5/26 5/27 5/28 5/29 5/30 Average

g/kg

Humdity Bias Humdity Gross Error

RMSE Humidity

0

0.5

1

1.5

2

2.5

 5/26 5/27 5/28 5/29 5/30 Average

g/kg

Humdity RMSE Humdity Sys RMSE Humdity Unsys RMSE

IOA Humidity

0

0.2

0.4

0.6

0.8

1

 5/26 5/27 5/28 5/29 5/30 Average

Humdity IOA

91 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 12 

Predicted/Observed Humidity

0

2

4

6

8

10

12

14

16

 5/26 5/27 5/28 5/29 5/30

g/kg

ObsHum PrdHum 

Bias Humidity

-2.5

-2

-1.5

-1

-0.5

0

0.5

 5/26 5/27 5/28 5/29 5/30

g/kg

BiasHum 

RMSE Humidity

0

0.5

1

1.5

2

2.5

3

3.5

 5/26 5/27 5/28 5/29 5/30

g/kg

RMSEHum RMSESHum RMSEUHum 

IOA Humidity

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 5/26 5/27 5/28 5/29 5/30

IOAHum 

92 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 13 

Observed/Predicted Windspeed

0

1

2

3

 5/31 6/01 6/02 6/03 6/04 Average

m/s

Wind Spd Mean OBS Wind Spd Mean PRD

Bias/Gross Error Windspeed

0

0.5

1

1.5

 5/31 6/01 6/02 6/03 6/04 Average

m/s

Wind Spd Bias Wind Spd Gross Error

RMSE Windspeed

0

0.5

1

1.5

2

 5/31 6/01 6/02 6/03 6/04 Average

m/s

Wind Spd RMSE Wind Spd Sys RMSE Wind Spd Unsys RMSE

IOA Windspeed

0

0.5

1

 5/31 6/01 6/02 6/03 6/04 Average

Wind Spd IOA

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 5/31 6/01 6/02 6/03 6/04 Average

deg

Wind Dir Mean OBS Wind Dir Mean PRD

Bias/Gross Error Wind Direction

-90

-60

-30

0

30

60

90

 5/31 6/01 6/02 6/03 6/04 Average

deg

Wind Dir Bias Wind Dir Gross Error

93 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 14 

Observed/Predicted Windspeed

0

1

2

3

4

5

 5/31 6/ 1 6/ 2 6/ 3 6/ 4

m/s

ObsWndSpd PrdWndSpd 

Bias Windspeed

-2

-1

0

1

2

 5/31 6/ 1 6/ 2 6/ 3 6/ 4

m/s

BiasWndSpd

RMSE Windspeed

0

1

2

3

4

 5/31 6/ 1 6/ 2 6/ 3 6/ 4

m/s

RMSEWndSpd RMSESWndSp RMSEUWndSp

IOA Windspeed

0

0.2

0.4

0.6

0.8

1

 5/31 6/ 1 6/ 2 6/ 3 6/ 4

IOAWndSpd 

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 5/31 6/ 1 6/ 2 6/ 3 6/ 4

deg

ObsWndDir PrdWndDir 

Bias Wind Direction

-90

-60

-30

0

30

60

90

 5/31 6/ 1 6/ 2 6/ 3 6/ 4

deg

BiasWndDir

94 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 15 

Observed/Predicted Temperature

294

295

296

297

298

299

300

301

302

303

 5/31 6/01 6/02 6/03 6/04 Average

K

Temp Mean OBS Temp Mean PRD

Bias/Gross Error Temperature

0

0.5

1

1.5

2

 5/31 6/01 6/02 6/03 6/04 Average

K

Temp Bias Temp Gross Error

RMSE Temperature

0

0.5

1

1.5

2

2.5

 5/31 6/01 6/02 6/03 6/04 Average

K

Temp RMSE Temp Sys RMSE Temp Unsys RMSE

IOA Temperature

0

0.2

0.4

0.6

0.8

1

 5/31 6/01 6/02 6/03 6/04 Average

Temp IOA

95 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 16 

Observed/Predicted Temperature

280

285

290

295

300

305

310

 5/31 6/ 1 6/ 2 6/ 3 6/ 4

K

ObsTemp PrdTemp 

Bias Temperature

-1.5

-1

-0.5

0

0.5

1

1.5

2

2.5

3

 5/31 6/ 1 6/ 2 6/ 3 6/ 4

K

BiasTemp 

RMSE Temperature

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

 5/31 6/ 1 6/ 2 6/ 3 6/ 4

K

RMSETemp RMSESTemp RMSEUTemp 

IOA Temperature

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 5/31 6/ 1 6/ 2 6/ 3 6/ 4

IOATemp 

96 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 17 

Observed/Predicted Humidity

0

5

10

15

20

 5/31 6/01 6/02 6/03 6/04 Average

g/kg

Humdity Mean OBS Humdity Mean PRD

Bias/Gross Error Humidity

-1

-0.5

0

0.5

1

1.5

2

 5/31 6/01 6/02 6/03 6/04 Average

g/kg

Humdity Bias Humdity Gross Error

RMSE Humidity

0

0.5

1

1.5

2

2.5

 5/31 6/01 6/02 6/03 6/04 Average

g/kg

Humdity RMSE Humdity Sys RMSE Humdity Unsys RMSE

IOA Humidity

0

0.2

0.4

0.6

0.8

1

 5/31 6/01 6/02 6/03 6/04 Average

Humdity IOA

97 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 18 

Predicted/Observed Humidity

0

2

4

6

8

10

12

14

16

18

20

 5/31 6/ 1 6/ 2 6/ 3 6/ 4

g/kg

ObsHum PrdHum 

Bias Humidity

-2.5

-2

-1.5

-1

-0.5

0

0.5

1

1.5

2

2.5

 5/31 6/ 1 6/ 2 6/ 3 6/ 4

g/kg

BiasHum 

RMSE Humidity

0

0.5

1

1.5

2

2.5

3

3.5

 5/31 6/ 1 6/ 2 6/ 3 6/ 4

g/kg

RMSEHum RMSESHum RMSEUHum 

IOA Humidity

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 5/31 6/ 1 6/ 2 6/ 3 6/ 4

IOAHum 

98 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 19 

Observed/Predicted Windspeed

0

2

4

6

 6/05 6/06 6/07 6/08 6/09 Average

m/s

Wind Spd Mean OBS Wind Spd Mean PRD

Bias/Gross Error Windspeed

0

0.5

1

1.5

2

 6/05 6/06 6/07 6/08 6/09 Average

m/s

Wind Spd Bias Wind Spd Gross Error

RMSE Windspeed

0

0.5

1

1.5

2

 6/05 6/06 6/07 6/08 6/09 Average

m/s

Wind Spd RMSE Wind Spd Sys RMSE Wind Spd Unsys RMSE

IOA Windspeed

0

0.5

1

 6/05 6/06 6/07 6/08 6/09 Average

Wind Spd IOA

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 6/05 6/06 6/07 6/08 6/09 Average

deg

Wind Dir Mean OBS Wind Dir Mean PRD

Bias/Gross Error Wind Direction

-90

-60

-30

0

30

60

90

 6/05 6/06 6/07 6/08 6/09 Average

deg

Wind Dir Bias Wind Dir Gross Error

99 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 20 

Observed/Predicted Windspeed

0

2

4

6

 6/ 5 6/ 6 6/ 7 6/ 8 6/ 9

m/s

ObsWndSpd PrdWndSpd 

Bias Windspeed

-1

-0.5

0

0.5

1

1.5

2

 6/ 5 6/ 6 6/ 7 6/ 8 6/ 9

m/s

BiasWndSpd

RMSE Windspeed

0

1

2

3

 6/ 5 6/ 6 6/ 7 6/ 8 6/ 9

m/s

RMSEWndSpd RMSESWndSp RMSEUWndSp

IOA Windspeed

0

0.2

0.4

0.6

0.8

1

 6/ 5 6/ 6 6/ 7 6/ 8 6/ 9

IOAWndSpd 

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 6/ 5 6/ 6 6/ 7 6/ 8 6/ 9

deg

ObsWndDir PrdWndDir 

Bias Wind Direction

-90

-60

-30

0

30

60

90

 6/ 5 6/ 6 6/ 7 6/ 8 6/ 9

deg

BiasWndDir

100 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 21 

Observed/Predicted Temperature

294

295

296

297

298

299

300

 6/05 6/06 6/07 6/08 6/09 Average

K

Temp Mean OBS Temp Mean PRD

Bias/Gross Error Temperature

-1

-0.5

0

0.5

1

1.5

2

 6/05 6/06 6/07 6/08 6/09 Average

K

Temp Bias Temp Gross Error

RMSE Temperature

0

0.5

1

1.5

2

2.5

 6/05 6/06 6/07 6/08 6/09 Average

K

Temp RMSE Temp Sys RMSE Temp Unsys RMSE

IOA Temperature

0

0.2

0.4

0.6

0.8

1

 6/05 6/06 6/07 6/08 6/09 Average

Temp IOA

101 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 22 

Observed/Predicted Temperature

280

285

290

295

300

305

310

 6/ 5 6/ 6 6/ 7 6/ 8 6/ 9

K

ObsTemp PrdTemp 

Bias Temperature

-2

-1.5

-1

-0.5

0

0.5

1

1.5

2

 6/ 5 6/ 6 6/ 7 6/ 8 6/ 9

K

BiasTemp 

RMSE Temperature

0

0.5

1

1.5

2

2.5

3

3.5

 6/ 5 6/ 6 6/ 7 6/ 8 6/ 9

K

RMSETemp RMSESTemp RMSEUTemp 

IOA Temperature

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 6/ 5 6/ 6 6/ 7 6/ 8 6/ 9

IOATemp 

102 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 23 

Observed/Predicted Humidity

0

5

10

15

20

 6/05 6/06 6/07 6/08 6/09 Average

g/kg

Humdity Mean OBS Humdity Mean PRD

Bias/Gross Error Humidity

-1

-0.5

0

0.5

1

1.5

2

 6/05 6/06 6/07 6/08 6/09 Average

g/kg

Humdity Bias Humdity Gross Error

RMSE Humidity

0

0.5

1

1.5

2

2.5

 6/05 6/06 6/07 6/08 6/09 Average

g/kg

Humdity RMSE Humdity Sys RMSE Humdity Unsys RMSE

IOA Humidity

0

0.2

0.4

0.6

0.8

1

 6/05 6/06 6/07 6/08 6/09 Average

Humdity IOA

103 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 24 

Predicted/Observed Humidity

0

2

4

6

8

10

12

14

16

18

20

 6/ 5 6/ 6 6/ 7 6/ 8 6/ 9

g/kg

ObsHum PrdHum 

Bias Humidity

-2.5

-2

-1.5

-1

-0.5

0

0.5

1

1.5

 6/ 5 6/ 6 6/ 7 6/ 8 6/ 9

g/kg

BiasHum 

RMSE Humidity

0

0.5

1

1.5

2

2.5

3

3.5

 6/ 5 6/ 6 6/ 7 6/ 8 6/ 9

g/kg

RMSEHum RMSESHum RMSEUHum 

IOA Humidity

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 6/ 5 6/ 6 6/ 7 6/ 8 6/ 9

IOAHum 

104 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 25 

Observed/Predicted Windspeed

0

1

2

3

4

 6/10 6/11 6/12 6/13 6/14 Average

m/s

Wind Spd Mean OBS Wind Spd Mean PRD

Bias/Gross Error Windspeed

0

0.5

1

1.5

2

 6/10 6/11 6/12 6/13 6/14 Average

m/s

Wind Spd Bias Wind Spd Gross Error

RMSE Windspeed

0

0.5

1

1.5

2

 6/10 6/11 6/12 6/13 6/14 Average

m/s

Wind Spd RMSE Wind Spd Sys RMSE Wind Spd Unsys RMSE

IOA Windspeed

0

0.5

1

 6/10 6/11 6/12 6/13 6/14 Average

Wind Spd IOA

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 6/10 6/11 6/12 6/13 6/14 Average

deg

Wind Dir Mean OBS Wind Dir Mean PRD

Bias/Gross Error Wind Direction

-90

-60

-30

0

30

60

90

 6/10 6/11 6/12 6/13 6/14 Average

deg

Wind Dir Bias Wind Dir Gross Error

105 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 26 

Observed/Predicted Windspeed

0

1

2

3

4

5

 6/10 6/11 6/12 6/13 6/14

m/s

ObsWndSpd PrdWndSpd 

Bias Windspeed

-2

-1

0

1

2

3

 6/10 6/11 6/12 6/13 6/14

m/s

BiasWndSpd

RMSE Windspeed

0

0.5

1

1.5

2

2.5

 6/10 6/11 6/12 6/13 6/14

m/s

RMSEWndSpd RMSESWndSp RMSEUWndSp

IOA Windspeed

0

0.2

0.4

0.6

0.8

1

 6/10 6/11 6/12 6/13 6/14

IOAWndSpd 

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 6/10 6/11 6/12 6/13 6/14

deg

ObsWndDir PrdWndDir 

Bias Wind Direction

-90

-60

-30

0

30

60

90

 6/10 6/11 6/12 6/13 6/14

deg

BiasWndDir

106 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 27 

Observed/Predicted Temperature

295

296

297

298

299

300

301

 6/10 6/11 6/12 6/13 6/14 Average

K

Temp Mean OBS Temp Mean PRD

Bias/Gross Error Temperature

0

0.5

1

1.5

2

 6/10 6/11 6/12 6/13 6/14 Average

K

Temp Bias Temp Gross Error

RMSE Temperature

0

0.5

1

1.5

2

2.5

 6/10 6/11 6/12 6/13 6/14 Average

K

Temp RMSE Temp Sys RMSE Temp Unsys RMSE

IOA Temperature

0

0.2

0.4

0.6

0.8

1

 6/10 6/11 6/12 6/13 6/14 Average

Temp IOA

107 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 28 

Observed/Predicted Temperature

280

285

290

295

300

305

310

 6/10 6/11 6/12 6/13 6/14

K

ObsTemp PrdTemp 

Bias Temperature

-2

-1.5

-1

-0.5

0

0.5

1

1.5

2

2.5

 6/10 6/11 6/12 6/13 6/14

K

BiasTemp 

RMSE Temperature

0

0.5

1

1.5

2

2.5

3

3.5

 6/10 6/11 6/12 6/13 6/14

K

RMSETemp RMSESTemp RMSEUTemp 

IOA Temperature

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 6/10 6/11 6/12 6/13 6/14

IOATemp 

108 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 29 

Observed/Predicted Humidity

0

5

10

15

20

 6/10 6/11 6/12 6/13 6/14 Average

g/kg

Humdity Mean OBS Humdity Mean PRD

Bias/Gross Error Humidity

-1

-0.5

0

0.5

1

1.5

2

2.5

 6/10 6/11 6/12 6/13 6/14 Average

g/kg

Humdity Bias Humdity Gross Error

RMSE Humidity

0

0.5

1

1.5

2

2.5

3

 6/10 6/11 6/12 6/13 6/14 Average

g/kg

Humdity RMSE Humdity Sys RMSE Humdity Unsys RMSE

IOA Humidity

0

0.2

0.4

0.6

0.8

1

 6/10 6/11 6/12 6/13 6/14 Average

Humdity IOA

109 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 30 

Predicted/Observed Humidity

0

2

4

6

8

10

12

14

16

18

 6/10 6/11 6/12 6/13 6/14

g/kg

ObsHum PrdHum 

Bias Humidity

-2.5

-2

-1.5

-1

-0.5

0

0.5

1

1.5

 6/10 6/11 6/12 6/13 6/14

g/kg

BiasHum 

RMSE Humidity

0

0.5

1

1.5

2

2.5

3

3.5

4

 6/10 6/11 6/12 6/13 6/14

g/kg

RMSEHum RMSESHum RMSEUHum 

IOA Humidity

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 6/10 6/11 6/12 6/13 6/14

IOAHum 

110 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 31 

Observed/Predicted Windspeed

0

1

2

3

4

 6/15 6/16 6/17 6/18 6/19 Average

m/s

Wind Spd Mean OBS Wind Spd Mean PRD

Bias/Gross Error Windspeed

0

0.5

1

1.5

2

 6/15 6/16 6/17 6/18 6/19 Average

m/s

Wind Spd Bias Wind Spd Gross Error

RMSE Windspeed

0

0.5

1

1.5

2

 6/15 6/16 6/17 6/18 6/19 Average

m/s

Wind Spd RMSE Wind Spd Sys RMSE Wind Spd Unsys RMSE

IOA Windspeed

0

0.5

1

 6/15 6/16 6/17 6/18 6/19 Average

Wind Spd IOA

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 6/15 6/16 6/17 6/18 6/19 Average

deg

Wind Dir Mean OBS Wind Dir Mean PRD

Bias/Gross Error Wind Direction

-90

-60

-30

0

30

60

90

 6/15 6/16 6/17 6/18 6/19 Average

deg

Wind Dir Bias Wind Dir Gross Error

111 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 32 

Observed/Predicted Windspeed

0

1

2

3

4

5

 6/15 6/16 6/17 6/18 6/19

m/s

ObsWndSpd PrdWndSpd 

Bias Windspeed

-2

-1

0

1

2

3

 6/15 6/16 6/17 6/18 6/19

m/s

BiasWndSpd

RMSE Windspeed

0

0.5

1

1.5

2

2.5

 6/15 6/16 6/17 6/18 6/19

m/s

RMSEWndSpd RMSESWndSp RMSEUWndSp

IOA Windspeed

0

0.2

0.4

0.6

0.8

1

 6/15 6/16 6/17 6/18 6/19

IOAWndSpd 

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 6/15 6/16 6/17 6/18 6/19

deg

ObsWndDir PrdWndDir 

Bias Wind Direction

-90

-60

-30

0

30

60

90

 6/15 6/16 6/17 6/18 6/19

deg

BiasWndDir

112 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 33 

Observed/Predicted Temperature

295

295.5

296

296.5

297

297.5

298

 6/15 6/16 6/17 6/18 6/19 Average

K

Temp Mean OBS Temp Mean PRD

Bias/Gross Error Temperature

-0.5

0

0.5

1

1.5

2

 6/15 6/16 6/17 6/18 6/19 Average

K

Temp Bias Temp Gross Error

RMSE Temperature

0

0.5

1

1.5

2

2.5

 6/15 6/16 6/17 6/18 6/19 Average

K

Temp RMSE Temp Sys RMSE Temp Unsys RMSE

IOA Temperature

0

0.2

0.4

0.6

0.8

1

 6/15 6/16 6/17 6/18 6/19 Average

Temp IOA

113 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 34 

Observed/Predicted Temperature

280

285

290

295

300

305

 6/15 6/16 6/17 6/18 6/19

K

ObsTemp PrdTemp 

Bias Temperature

-1.5

-1

-0.5

0

0.5

1

1.5

2

2.5

3

 6/15 6/16 6/17 6/18 6/19

K

BiasTemp 

RMSE Temperature

0

0.5

1

1.5

2

2.5

3

3.5

 6/15 6/16 6/17 6/18 6/19

K

RMSETemp RMSESTemp RMSEUTemp 

IOA Temperature

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 6/15 6/16 6/17 6/18 6/19

IOATemp 

114 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 35 

Observed/Predicted Humidity

0

2

4

6

8

10

12

14

16

 6/15 6/16 6/17 6/18 6/19 Average

g/kg

Humdity Mean OBS Humdity Mean PRD

Bias/Gross Error Humidity

-1.5

-1

-0.5

0

0.5

1

1.5

2

 6/15 6/16 6/17 6/18 6/19 Average

g/kg

Humdity Bias Humdity Gross Error

RMSE Humidity

0

0.5

1

1.5

2

2.5

 6/15 6/16 6/17 6/18 6/19 Average

g/kg

Humdity RMSE Humdity Sys RMSE Humdity Unsys RMSE

IOA Humidity

0

0.2

0.4

0.6

0.8

1

 6/15 6/16 6/17 6/18 6/19 Average

Humdity IOA

115 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 36 

Predicted/Observed Humidity

0

2

4

6

8

10

12

14

16

 6/15 6/16 6/17 6/18 6/19

g/kg

ObsHum PrdHum 

Bias Humidity

-1.5

-1

-0.5

0

0.5

1

1.5

 6/15 6/16 6/17 6/18 6/19

g/kg

BiasHum 

RMSE Humidity

0

0.5

1

1.5

2

2.5

3

 6/15 6/16 6/17 6/18 6/19

g/kg

RMSEHum RMSESHum RMSEUHum 

IOA Humidity

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 6/15 6/16 6/17 6/18 6/19

IOAHum 

116 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 37 

Observed/Predicted Windspeed

0

2

4

6

 6/20 6/21 6/22 6/23 6/24 Average

m/s

Wind Spd Mean OBS Wind Spd Mean PRD

Bias/Gross Error Windspeed

0

0.5

1

1.5

2

 6/20 6/21 6/22 6/23 6/24 Average

m/s

Wind Spd Bias Wind Spd Gross Error

RMSE Windspeed

0

1

2

3

 6/20 6/21 6/22 6/23 6/24 Average

m/s

Wind Spd RMSE Wind Spd Sys RMSE Wind Spd Unsys RMSE

IOA Windspeed

0

0.5

1

 6/20 6/21 6/22 6/23 6/24 Average

Wind Spd IOA

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 6/20 6/21 6/22 6/23 6/24 Average

deg

Wind Dir Mean OBS Wind Dir Mean PRD

Bias/Gross Error Wind Direction

-90

-60

-30

0

30

60

90

 6/20 6/21 6/22 6/23 6/24 Average

deg

Wind Dir Bias Wind Dir Gross Error

117 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 38 

Observed/Predicted Windspeed

0

2

4

6

8

 6/20 6/21 6/22 6/23 6/24

m/s

ObsWndSpd PrdWndSpd 

Bias Windspeed

-1

-0.5

0

0.5

1

1.5

2

 6/20 6/21 6/22 6/23 6/24

m/s

BiasWndSpd

RMSE Windspeed

0

1

2

3

 6/20 6/21 6/22 6/23 6/24

m/s

RMSEWndSpd RMSESWndSp RMSEUWndSp

IOA Windspeed

0

0.2

0.4

0.6

0.8

1

 6/20 6/21 6/22 6/23 6/24

IOAWndSpd 

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 6/20 6/21 6/22 6/23 6/24

deg

ObsWndDir PrdWndDir 

Bias Wind Direction

-90

-60

-30

0

30

60

90

 6/20 6/21 6/22 6/23 6/24

deg

BiasWndDir

118 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 39 

Observed/Predicted Temperature

295.5

296

296.5

297

297.5

298

298.5

 6/20 6/21 6/22 6/23 6/24 Average

K

Temp Mean OBS Temp Mean PRD

Bias/Gross Error Temperature

-1

-0.5

0

0.5

1

1.5

2

 6/20 6/21 6/22 6/23 6/24 Average

K

Temp Bias Temp Gross Error

RMSE Temperature

0

0.5

1

1.5

2

2.5

 6/20 6/21 6/22 6/23 6/24 Average

K

Temp RMSE Temp Sys RMSE Temp Unsys RMSE

IOA Temperature

0

0.2

0.4

0.6

0.8

1

 6/20 6/21 6/22 6/23 6/24 Average

Temp IOA

119 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 40 

Observed/Predicted Temperature

286

288

290

292

294

296

298

300

302

304

306

 6/20 6/21 6/22 6/23 6/24

K

ObsTemp PrdTemp 

Bias Temperature

-2

-1.5

-1

-0.5

0

0.5

1

1.5

2

 6/20 6/21 6/22 6/23 6/24

K

BiasTemp 

RMSE Temperature

0

0.5

1

1.5

2

2.5

3

3.5

 6/20 6/21 6/22 6/23 6/24

K

RMSETemp RMSESTemp RMSEUTemp 

IOA Temperature

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 6/20 6/21 6/22 6/23 6/24

IOATemp 

120 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 41 

Observed/Predicted Humidity

0

5

10

15

20

 6/20 6/21 6/22 6/23 6/24 Average

g/kg

Humdity Mean OBS Humdity Mean PRD

Bias/Gross Error Humidity

-1

-0.5

0

0.5

1

1.5

 6/20 6/21 6/22 6/23 6/24 Average

g/kg

Humdity Bias Humdity Gross Error

RMSE Humidity

0

0.5

1

1.5

2

 6/20 6/21 6/22 6/23 6/24 Average

g/kg

Humdity RMSE Humdity Sys RMSE Humdity Unsys RMSE

IOA Humidity

0

0.2

0.4

0.6

0.8

1

 6/20 6/21 6/22 6/23 6/24 Average

Humdity IOA

121 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 42 

Predicted/Observed Humidity

0

2

4

6

8

10

12

14

16

18

 6/20 6/21 6/22 6/23 6/24

g/kg

ObsHum PrdHum 

Bias Humidity

-2

-1.5

-1

-0.5

0

0.5

1

1.5

 6/20 6/21 6/22 6/23 6/24

g/kg

BiasHum 

RMSE Humidity

0

0.5

1

1.5

2

2.5

 6/20 6/21 6/22 6/23 6/24

g/kg

RMSEHum RMSESHum RMSEUHum 

IOA Humidity

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 6/20 6/21 6/22 6/23 6/24

IOAHum 

122 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 43 

Observed/Predicted Windspeed

0

1

2

3

4

 6/25 6/26 6/27 6/28 6/29 Average

m/s

Wind Spd Mean OBS Wind Spd Mean PRD

Bias/Gross Error Windspeed

0

0.5

1

1.5

2

 6/25 6/26 6/27 6/28 6/29 Average

m/s

Wind Spd Bias Wind Spd Gross Error

RMSE Windspeed

0

0.5

1

1.5

2

 6/25 6/26 6/27 6/28 6/29 Average

m/s

Wind Spd RMSE Wind Spd Sys RMSE Wind Spd Unsys RMSE

IOA Windspeed

0

0.5

1

 6/25 6/26 6/27 6/28 6/29 Average

Wind Spd IOA

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 6/25 6/26 6/27 6/28 6/29 Average

deg

Wind Dir Mean OBS Wind Dir Mean PRD

Bias/Gross Error Wind Direction

-90

-60

-30

0

30

60

90

 6/25 6/26 6/27 6/28 6/29 Average

deg

Wind Dir Bias Wind Dir Gross Error

123 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 44 

Observed/Predicted Windspeed

0

2

4

6

 6/25 6/26 6/27 6/28 6/29

m/s

ObsWndSpd PrdWndSpd 

Bias Windspeed

-1

-0.5

0

0.5

1

1.5

2

 6/25 6/26 6/27 6/28 6/29

m/s

BiasWndSpd

RMSE Windspeed

0

0.5

1

1.5

2

2.5

 6/25 6/26 6/27 6/28 6/29

m/s

RMSEWndSpd RMSESWndSp RMSEUWndSp

IOA Windspeed

0

0.2

0.4

0.6

0.8

1

 6/25 6/26 6/27 6/28 6/29

IOAWndSpd 

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 6/25 6/26 6/27 6/28 6/29

deg

ObsWndDir PrdWndDir 

Bias Wind Direction

-90

-60

-30

0

30

60

90

 6/25 6/26 6/27 6/28 6/29

deg

BiasWndDir

124 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 45 

Observed/Predicted Temperature

297.8

298

298.2

298.4

298.6

298.8

299

 6/25 6/26 6/27 6/28 6/29 Average

K

Temp Mean OBS Temp Mean PRD

Bias/Gross Error Temperature

-0.5

0

0.5

1

1.5

2

 6/25 6/26 6/27 6/28 6/29 Average

K

Temp Bias Temp Gross Error

RMSE Temperature

0

0.5

1

1.5

2

2.5

 6/25 6/26 6/27 6/28 6/29 Average

K

Temp RMSE Temp Sys RMSE Temp Unsys RMSE

IOA Temperature

0

0.2

0.4

0.6

0.8

1

 6/25 6/26 6/27 6/28 6/29 Average

Temp IOA

125 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 46 

Observed/Predicted Temperature

290

292

294

296

298

300

302

304

306

 6/25 6/26 6/27 6/28 6/29

K

ObsTemp PrdTemp 

Bias Temperature

-1

-0.5

0

0.5

1

1.5

2

 6/25 6/26 6/27 6/28 6/29

K

BiasTemp 

RMSE Temperature

0

0.5

1

1.5

2

2.5

3

3.5

 6/25 6/26 6/27 6/28 6/29

K

RMSETemp RMSESTemp RMSEUTemp 

IOA Temperature

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 6/25 6/26 6/27 6/28 6/29

IOATemp 

126 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 47 

Observed/Predicted Humidity

14.5

15

15.5

16

16.5

17

17.5

 6/25 6/26 6/27 6/28 6/29 Average

g/kg

Humdity Mean OBS Humdity Mean PRD

Bias/Gross Error Humidity

-1

-0.5

0

0.5

1

1.5

2

 6/25 6/26 6/27 6/28 6/29 Average

g/kg

Humdity Bias Humdity Gross Error

RMSE Humidity

0

0.5

1

1.5

2

 6/25 6/26 6/27 6/28 6/29 Average

g/kg

Humdity RMSE Humdity Sys RMSE Humdity Unsys RMSE

IOA Humidity

0

0.2

0.4

0.6

0.8

1

 6/25 6/26 6/27 6/28 6/29 Average

Humdity IOA

127 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 48 

Predicted/Observed Humidity

0

2

4

6

8

10

12

14

16

18

20

 6/25 6/26 6/27 6/28 6/29

g/kg

ObsHum PrdHum 

Bias Humidity

-2.5

-2

-1.5

-1

-0.5

0

0.5

1

1.5

2

 6/25 6/26 6/27 6/28 6/29

g/kg

BiasHum 

RMSE Humidity

0

0.5

1

1.5

2

2.5

3

 6/25 6/26 6/27 6/28 6/29

g/kg

RMSEHum RMSESHum RMSEUHum 

IOA Humidity

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 6/25 6/26 6/27 6/28 6/29

IOAHum 

128 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 49 

Observed/Predicted Windspeed

0

1

2

3

 6/30 7/01 7/02 7/03 7/04 Average

m/s

Wind Spd Mean OBS Wind Spd Mean PRD

Bias/Gross Error Windspeed

0

0.5

1

1.5

2

 6/30 7/01 7/02 7/03 7/04 Average

m/s

Wind Spd Bias Wind Spd Gross Error

RMSE Windspeed

0

0.5

1

1.5

2

 6/30 7/01 7/02 7/03 7/04 Average

m/s

Wind Spd RMSE Wind Spd Sys RMSE Wind Spd Unsys RMSE

IOA Windspeed

0

0.5

1

 6/30 7/01 7/02 7/03 7/04 Average

Wind Spd IOA

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 6/30 7/01 7/02 7/03 7/04 Average

deg

Wind Dir Mean OBS Wind Dir Mean PRD

Bias/Gross Error Wind Direction

-90

-60

-30

0

30

60

90

 6/30 7/01 7/02 7/03 7/04 Average

deg

Wind Dir Bias Wind Dir Gross Error

129 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 50 

Observed/Predicted Windspeed

0

1

2

3

4

5

 6/30 7/ 1 7/ 2 7/ 3 7/ 4

m/s

ObsWndSpd PrdWndSpd 

Bias Windspeed

-2

-1

0

1

2

 6/30 7/ 1 7/ 2 7/ 3 7/ 4

m/s

BiasWndSpd

RMSE Windspeed

0

1

2

3

4

 6/30 7/ 1 7/ 2 7/ 3 7/ 4

m/s

RMSEWndSpd RMSESWndSp RMSEUWndSp

IOA Windspeed

0

0.2

0.4

0.6

0.8

1

 6/30 7/ 1 7/ 2 7/ 3 7/ 4

IOAWndSpd 

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 6/30 7/ 1 7/ 2 7/ 3 7/ 4

deg

ObsWndDir PrdWndDir 

Bias Wind Direction

-90

-60

-30

0

30

60

90

 6/30 7/ 1 7/ 2 7/ 3 7/ 4

deg

BiasWndDir

130 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 51 

Observed/Predicted Temperature

298

298.5

299

299.5

300

300.5

 6/30 7/01 7/02 7/03 7/04 Average

K

Temp Mean OBS Temp Mean PRD

Bias/Gross Error Temperature

0

0.5

1

1.5

2

 6/30 7/01 7/02 7/03 7/04 Average

K

Temp Bias Temp Gross Error

RMSE Temperature

0

0.5

1

1.5

2

2.5

 6/30 7/01 7/02 7/03 7/04 Average

K

Temp RMSE Temp Sys RMSE Temp Unsys RMSE

IOA Temperature

0

0.2

0.4

0.6

0.8

1

 6/30 7/01 7/02 7/03 7/04 Average

Temp IOA

131 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 52 

Observed/Predicted Temperature

288

290

292

294

296

298

300

302

304

306

308

 6/30 7/ 1 7/ 2 7/ 3 7/ 4

K

ObsTemp PrdTemp 

Bias Temperature

-1.5

-1

-0.5

0

0.5

1

1.5

2

2.5

 6/30 7/ 1 7/ 2 7/ 3 7/ 4

K

BiasTemp 

RMSE Temperature

0

0.5

1

1.5

2

2.5

3

3.5

4

 6/30 7/ 1 7/ 2 7/ 3 7/ 4

K

RMSETemp RMSESTemp RMSEUTemp 

IOA Temperature

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 6/30 7/ 1 7/ 2 7/ 3 7/ 4

IOATemp 

132 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 53 

Observed/Predicted Humidity

14.5

15

15.5

16

16.5

17

17.5

18

 6/30 7/01 7/02 7/03 7/04 Average

g/kg

Humdity Mean OBS Humdity Mean PRD

Bias/Gross Error Humidity

-1

-0.5

0

0.5

1

1.5

2

2.5

 6/30 7/01 7/02 7/03 7/04 Average

g/kg

Humdity Bias Humdity Gross Error

RMSE Humidity

0

0.5

1

1.5

2

2.5

3

 6/30 7/01 7/02 7/03 7/04 Average

g/kg

Humdity RMSE Humdity Sys RMSE Humdity Unsys RMSE

IOA Humidity

0

0.2

0.4

0.6

0.8

1

 6/30 7/01 7/02 7/03 7/04 Average

Humdity IOA

133 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 54 

Predicted/Observed Humidity

0

2

4

6

8

10

12

14

16

18

20

 6/30 7/ 1 7/ 2 7/ 3 7/ 4

g/kg

ObsHum PrdHum 

Bias Humidity

-3

-2

-1

0

1

2

3

4

 6/30 7/ 1 7/ 2 7/ 3 7/ 4

g/kg

BiasHum 

RMSE Humidity

0

0.5

1

1.5

2

2.5

3

3.5

4

 6/30 7/ 1 7/ 2 7/ 3 7/ 4

g/kg

RMSEHum RMSESHum RMSEUHum 

IOA Humidity

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 6/30 7/ 1 7/ 2 7/ 3 7/ 4

IOAHum 

134 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 55 

Observed/Predicted Windspeed

0

1

2

3

4

 7/05 7/06 7/07 7/08 7/09 Average

m/s

Wind Spd Mean OBS Wind Spd Mean PRD

Bias/Gross Error Windspeed

0

0.5

1

1.5

2

 7/05 7/06 7/07 7/08 7/09 Average

m/s

Wind Spd Bias Wind Spd Gross Error

RMSE Windspeed

0

0.5

1

1.5

2

 7/05 7/06 7/07 7/08 7/09 Average

m/s

Wind Spd RMSE Wind Spd Sys RMSE Wind Spd Unsys RMSE

IOA Windspeed

0

0.5

1

 7/05 7/06 7/07 7/08 7/09 Average

Wind Spd IOA

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 7/05 7/06 7/07 7/08 7/09 Average

deg

Wind Dir Mean OBS Wind Dir Mean PRD

Bias/Gross Error Wind Direction

-90

-60

-30

0

30

60

90

 7/05 7/06 7/07 7/08 7/09 Average

deg

Wind Dir Bias Wind Dir Gross Error

135 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 56 

Observed/Predicted Windspeed

0

1

2

3

4

5

 7/ 5 7/ 6 7/ 7 7/ 8 7/ 9

m/s

ObsWndSpd PrdWndSpd 

Bias Windspeed

-0.5

0

0.5

1

1.5

2

 7/ 5 7/ 6 7/ 7 7/ 8 7/ 9

m/s

BiasWndSpd

RMSE Windspeed

0

0.5

1

1.5

2

2.5

 7/ 5 7/ 6 7/ 7 7/ 8 7/ 9

m/s

RMSEWndSpd RMSESWndSp RMSEUWndSp

IOA Windspeed

0

0.2

0.4

0.6

0.8

1

 7/ 5 7/ 6 7/ 7 7/ 8 7/ 9

IOAWndSpd 

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 7/ 5 7/ 6 7/ 7 7/ 8 7/ 9

deg

ObsWndDir PrdWndDir 

Bias Wind Direction

-90

-60

-30

0

30

60

90

 7/ 5 7/ 6 7/ 7 7/ 8 7/ 9

deg

BiasWndDir

136 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 57 

Observed/Predicted Temperature

298.5

299

299.5

300

300.5

301

301.5

302

 7/05 7/06 7/07 7/08 7/09 Average

K

Temp Mean OBS Temp Mean PRD

Bias/Gross Error Temperature

-0.5

0

0.5

1

1.5

2

 7/05 7/06 7/07 7/08 7/09 Average

K

Temp Bias Temp Gross Error

RMSE Temperature

0

0.5

1

1.5

2

2.5

 7/05 7/06 7/07 7/08 7/09 Average

K

Temp RMSE Temp Sys RMSE Temp Unsys RMSE

IOA Temperature

0

0.2

0.4

0.6

0.8

1

 7/05 7/06 7/07 7/08 7/09 Average

Temp IOA

137 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 58 

Observed/Predicted Temperature

286

288

290

292

294

296

298

300

302

304

306

308

 7/ 5 7/ 6 7/ 7 7/ 8 7/ 9

K

ObsTemp PrdTemp 

Bias Temperature

-2

-1.5

-1

-0.5

0

0.5

1

1.5

2

 7/ 5 7/ 6 7/ 7 7/ 8 7/ 9

K

BiasTemp 

RMSE Temperature

0

0.5

1

1.5

2

2.5

3

3.5

 7/ 5 7/ 6 7/ 7 7/ 8 7/ 9

K

RMSETemp RMSESTemp RMSEUTemp 

IOA Temperature

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 7/ 5 7/ 6 7/ 7 7/ 8 7/ 9

IOATemp 

138 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 59 

Observed/Predicted Humidity

13.5

14

14.5

15

15.5

16

16.5

17

 7/05 7/06 7/07 7/08 7/09 Average

g/kg

Humdity Mean OBS Humdity Mean PRD

Bias/Gross Error Humidity

-1

-0.5

0

0.5

1

1.5

2

 7/05 7/06 7/07 7/08 7/09 Average

g/kg

Humdity Bias Humdity Gross Error

RMSE Humidity

0

0.5

1

1.5

2

2.5

 7/05 7/06 7/07 7/08 7/09 Average

g/kg

Humdity RMSE Humdity Sys RMSE Humdity Unsys RMSE

IOA Humidity

0

0.2

0.4

0.6

0.8

1

 7/05 7/06 7/07 7/08 7/09 Average

Humdity IOA

139 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 60 

Predicted/Observed Humidity

0

2

4

6

8

10

12

14

16

18

20

 7/ 5 7/ 6 7/ 7 7/ 8 7/ 9

g/kg

ObsHum PrdHum 

Bias Humidity

-2.5

-2

-1.5

-1

-0.5

0

0.5

1

1.5

 7/ 5 7/ 6 7/ 7 7/ 8 7/ 9

g/kg

BiasHum 

RMSE Humidity

0

0.5

1

1.5

2

2.5

3

3.5

4

 7/ 5 7/ 6 7/ 7 7/ 8 7/ 9

g/kg

RMSEHum RMSESHum RMSEUHum 

IOA Humidity

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 7/ 5 7/ 6 7/ 7 7/ 8 7/ 9

IOAHum 

140 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 61 

Observed/Predicted Windspeed

0

1

2

3

4

 7/10 7/11 7/12 7/13 7/14 Average

m/s

Wind Spd Mean OBS Wind Spd Mean PRD

Bias/Gross Error Windspeed

0

0.5

1

1.5

 7/10 7/11 7/12 7/13 7/14 Average

m/s

Wind Spd Bias Wind Spd Gross Error

RMSE Windspeed

0

0.5

1

1.5

2

 7/10 7/11 7/12 7/13 7/14 Average

m/s

Wind Spd RMSE Wind Spd Sys RMSE Wind Spd Unsys RMSE

IOA Windspeed

0

0.5

1

 7/10 7/11 7/12 7/13 7/14 Average

Wind Spd IOA

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 7/10 7/11 7/12 7/13 7/14 Average

deg

Wind Dir Mean OBS Wind Dir Mean PRD

141 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 62 

Observed/Predicted Windspeed

0

1

2

3

4

5

 7/10 7/11 7/12 7/13 7/14

m/s

ObsWndSpd PrdWndSpd 

Bias Windspeed

-2

-1

0

1

2

 7/10 7/11 7/12 7/13 7/14

m/s

BiasWndSpd

RMSE Windspeed

0

1

2

3

4

5

 7/10 7/11 7/12 7/13 7/14

m/s

RMSEWndSpd RMSESWndSp RMSEUWndSp

IOA Windspeed

0

0.2

0.4

0.6

0.8

1

 7/10 7/11 7/12 7/13 7/14

IOAWndSpd 

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 7/10 7/11 7/12 7/13 7/14

deg

ObsWndDir PrdWndDir 

Bias Wind Direction

-90

-60

-30

0

30

60

90

 7/10 7/11 7/12 7/13 7/14

deg

BiasWndDir

142 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 63 

Observed/Predicted Temperature

295

296

297

298

299

300

301

 7/10 7/11 7/12 7/13 7/14 Average

K

Temp Mean OBS Temp Mean PRD

Bias/Gross Error Temperature

-1

-0.5

0

0.5

1

1.5

2

 7/10 7/11 7/12 7/13 7/14 Average

K

Temp Bias Temp Gross Error

RMSE Temperature

0

0.5

1

1.5

2

2.5

 7/10 7/11 7/12 7/13 7/14 Average

K

Temp RMSE Temp Sys RMSE Temp Unsys RMSE

IOA Temperature

0

0.2

0.4

0.6

0.8

1

 7/10 7/11 7/12 7/13 7/14 Average

Temp IOA

143 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 64 

Observed/Predicted Temperature

288

290

292

294

296

298

300

302

304

306

308

 7/10 7/11 7/12 7/13 7/14

K

ObsTemp PrdTemp 

Bias Temperature

-1.5

-1

-0.5

0

0.5

1

1.5

 7/10 7/11 7/12 7/13 7/14

K

BiasTemp 

RMSE Temperature

0

0.5

1

1.5

2

2.5

3

3.5

4

 7/10 7/11 7/12 7/13 7/14

K

RMSETemp RMSESTemp RMSEUTemp 

IOA Temperature

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 7/10 7/11 7/12 7/13 7/14

IOATemp 

144 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 65 

Observed/Predicted Humidity

14

14.5

15

15.5

16

16.5

17

17.5

18

 7/10 7/11 7/12 7/13 7/14 Average

g/kg

Humdity Mean OBS Humdity Mean PRD

Bias/Gross Error Humidity

-1

-0.5

0

0.5

1

1.5

2

 7/10 7/11 7/12 7/13 7/14 Average

g/kg

Humdity Bias Humdity Gross Error

RMSE Humidity

0

0.5

1

1.5

2

2.5

 7/10 7/11 7/12 7/13 7/14 Average

g/kg

Humdity RMSE Humdity Sys RMSE Humdity Unsys RMSE

IOA Humidity

0

0.2

0.4

0.6

0.8

1

 7/10 7/11 7/12 7/13 7/14 Average

Humdity IOA

145 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 66 

Predicted/Observed Humidity

0

2

4

6

8

10

12

14

16

18

20

 7/10 7/11 7/12 7/13 7/14

g/kg

ObsHum PrdHum 

Bias Humidity

-2

-1.5

-1

-0.5

0

0.5

1

1.5

2

 7/10 7/11 7/12 7/13 7/14

g/kg

BiasHum 

RMSE Humidity

0

0.5

1

1.5

2

2.5

3

 7/10 7/11 7/12 7/13 7/14

g/kg

RMSEHum RMSESHum RMSEUHum 

IOA Humidity

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 7/10 7/11 7/12 7/13 7/14

IOAHum 

146 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 67 

Observed/Predicted Windspeed

0

1

2

3

4

 7/15 7/16 7/17 7/18 7/19 Average

m/s

Wind Spd Mean OBS Wind Spd Mean PRD

Bias/Gross Error Windspeed

0

0.5

1

1.5

 7/15 7/16 7/17 7/18 7/19 Average

m/s

Wind Spd Bias Wind Spd Gross Error

RMSE Windspeed

0

0.5

1

1.5

2

 7/15 7/16 7/17 7/18 7/19 Average

m/s

Wind Spd RMSE Wind Spd Sys RMSE Wind Spd Unsys RMSE

IOA Windspeed

0

0.5

1

 7/15 7/16 7/17 7/18 7/19 Average

Wind Spd IOA

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 7/15 7/16 7/17 7/18 7/19 Average

deg

Wind Dir Mean OBS Wind Dir Mean PRD

Bias/Gross Error Wind Direction

-90

-60

-30

0

30

60

90

 7/15 7/16 7/17 7/18 7/19 Average

deg

Wind Dir Bias Wind Dir Gross Error

147 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 68 

Observed/Predicted Windspeed

0

1

2

3

4

5

 7/15 7/16 7/17 7/18 7/19

m/s

ObsWndSpd PrdWndSpd 

Bias Windspeed

-1

-0.5

0

0.5

1

1.5

2

 7/15 7/16 7/17 7/18 7/19

m/s

BiasWndSpd

RMSE Windspeed

0

0.5

1

1.5

2

2.5

 7/15 7/16 7/17 7/18 7/19

m/s

RMSEWndSpd RMSESWndSp RMSEUWndSp

IOA Windspeed

0

0.2

0.4

0.6

0.8

1

 7/15 7/16 7/17 7/18 7/19

IOAWndSpd 

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 7/15 7/16 7/17 7/18 7/19

deg

ObsWndDir PrdWndDir 

Bias Wind Direction

-90

-60

-30

0

30

60

90

 7/15 7/16 7/17 7/18 7/19

deg

BiasWndDir

148 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 69 

Observed/Predicted Temperature

298

298.5

299

299.5

300

300.5

301

301.5

302

302.5

 7/15 7/16 7/17 7/18 7/19 Average

K

Temp Mean OBS Temp Mean PRD

Bias/Gross Error Temperature

-0.5

0

0.5

1

1.5

2

 7/15 7/16 7/17 7/18 7/19 Average

K

Temp Bias Temp Gross Error

RMSE Temperature

0

0.5

1

1.5

2

2.5

 7/15 7/16 7/17 7/18 7/19 Average

K

Temp RMSE Temp Sys RMSE Temp Unsys RMSE

IOA Temperature

0

0.2

0.4

0.6

0.8

1

 7/15 7/16 7/17 7/18 7/19 Average

Temp IOA

149 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 70 

Observed/Predicted Temperature

288

290

292

294

296

298

300

302

304

306

308

310

 7/15 7/16 7/17 7/18 7/19

K

ObsTemp PrdTemp 

Bias Temperature

-2.5

-2

-1.5

-1

-0.5

0

0.5

1

1.5

2

 7/15 7/16 7/17 7/18 7/19

K

BiasTemp 

RMSE Temperature

0

0.5

1

1.5

2

2.5

3

3.5

 7/15 7/16 7/17 7/18 7/19

K

RMSETemp RMSESTemp RMSEUTemp 

IOA Temperature

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 7/15 7/16 7/17 7/18 7/19

IOATemp 

150 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 71 

Observed/Predicted Humidity

15.5

16

16.5

17

17.5

 7/15 7/16 7/17 7/18 7/19 Average

g/kg

Humdity Mean OBS Humdity Mean PRD

Bias/Gross Error Humidity

-1

-0.5

0

0.5

1

1.5

2

 7/15 7/16 7/17 7/18 7/19 Average

g/kg

Humdity Bias Humdity Gross Error

RMSE Humidity

0

0.5

1

1.5

2

2.5

 7/15 7/16 7/17 7/18 7/19 Average

g/kg

Humdity RMSE Humdity Sys RMSE Humdity Unsys RMSE

IOA Humidity

0

0.2

0.4

0.6

0.8

1

 7/15 7/16 7/17 7/18 7/19 Average

Humdity IOA

151 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 72 

Predicted/Observed Humidity

0

2

4

6

8

10

12

14

16

18

20

 7/15 7/16 7/17 7/18 7/19

g/kg

ObsHum PrdHum 

Bias Humidity

-2

-1.5

-1

-0.5

0

0.5

1

1.5

2

 7/15 7/16 7/17 7/18 7/19

g/kg

BiasHum 

RMSE Humidity

0

0.5

1

1.5

2

2.5

3

3.5

4

 7/15 7/16 7/17 7/18 7/19

g/kg

RMSEHum RMSESHum RMSEUHum 

IOA Humidity

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 7/15 7/16 7/17 7/18 7/19

IOAHum 

152 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 73 

Observed/Predicted Windspeed

0

1

2

3

 7/20 7/21 7/22 7/23 7/24 Average

m/s

Wind Spd Mean OBS Wind Spd Mean PRD

Bias/Gross Error Windspeed

0

0.5

1

1.5

 7/20 7/21 7/22 7/23 7/24 Average

m/s

Wind Spd Bias Wind Spd Gross Error

RMSE Windspeed

0

0.5

1

1.5

2

 7/20 7/21 7/22 7/23 7/24 Average

m/s

Wind Spd RMSE Wind Spd Sys RMSE Wind Spd Unsys RMSE

IOA Windspeed

0

0.5

1

 7/20 7/21 7/22 7/23 7/24 Average

Wind Spd IOA

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 7/20 7/21 7/22 7/23 7/24 Average

deg

Wind Dir Mean OBS Wind Dir Mean PRD

Bias/Gross Error Wind Direction

-90

-60

-30

0

30

60

90

 7/20 7/21 7/22 7/23 7/24 Average

deg

Wind Dir Bias Wind Dir Gross Error

153 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 74 

Observed/Predicted Windspeed

0

1

2

3

4

5

 7/20 7/21 7/22 7/23 7/24

m/s

ObsWndSpd PrdWndSpd 

Bias Windspeed

-2

-1

0

1

2

 7/20 7/21 7/22 7/23 7/24

m/s

BiasWndSpd

RMSE Windspeed

0

1

2

3

 7/20 7/21 7/22 7/23 7/24

m/s

RMSEWndSpd RMSESWndSp RMSEUWndSp

IOA Windspeed

0

0.2

0.4

0.6

0.8

1

 7/20 7/21 7/22 7/23 7/24

IOAWndSpd 

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 7/20 7/21 7/22 7/23 7/24

deg

ObsWndDir PrdWndDir 

Bias Wind Direction

-90

-60

-30

0

30

60

90

 7/20 7/21 7/22 7/23 7/24

deg

BiasWndDir

154 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 75 

Observed/Predicted Temperature

296

297

298

299

300

301

302

 7/20 7/21 7/22 7/23 7/24 Average

K

Temp Mean OBS Temp Mean PRD

Bias/Gross Error Temperature

0

0.5

1

1.5

2

 7/20 7/21 7/22 7/23 7/24 Average

K

Temp Bias Temp Gross Error

RMSE Temperature

0

0.5

1

1.5

2

2.5

 7/20 7/21 7/22 7/23 7/24 Average

K

Temp RMSE Temp Sys RMSE Temp Unsys RMSE

IOA Temperature

0

0.2

0.4

0.6

0.8

1

 7/20 7/21 7/22 7/23 7/24 Average

Temp IOA

155 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 76 

Observed/Predicted Temperature

288

290

292

294

296

298

300

302

304

306

308

 7/20 7/21 7/22 7/23 7/24

K

ObsTemp PrdTemp 

Bias Temperature

-1

-0.5

0

0.5

1

1.5

 7/20 7/21 7/22 7/23 7/24

K

BiasTemp 

RMSE Temperature

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

 7/20 7/21 7/22 7/23 7/24

K

RMSETemp RMSESTemp RMSEUTemp 

IOA Temperature

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 7/20 7/21 7/22 7/23 7/24

IOATemp 

156 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 77 

Observed/Predicted Humidity

14.5

15

15.5

16

16.5

17

17.5

18

 7/20 7/21 7/22 7/23 7/24 Average

g/kg

Humdity Mean OBS Humdity Mean PRD

Bias/Gross Error Humidity

-0.5

0

0.5

1

1.5

2

2.5

 7/20 7/21 7/22 7/23 7/24 Average

g/kg

Humdity Bias Humdity Gross Error

RMSE Humidity

0

0.5

1

1.5

2

2.5

 7/20 7/21 7/22 7/23 7/24 Average

g/kg

Humdity RMSE Humdity Sys RMSE Humdity Unsys RMSE

IOA Humidity

0

0.2

0.4

0.6

0.8

1

 7/20 7/21 7/22 7/23 7/24 Average

Humdity IOA

157 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 78 

Predicted/Observed Humidity

0

2

4

6

8

10

12

14

16

18

20

 7/20 7/21 7/22 7/23 7/24

g/kg

ObsHum PrdHum 

Bias Humidity

-2

-1.5

-1

-0.5

0

0.5

1

1.5

2

 7/20 7/21 7/22 7/23 7/24

g/kg

BiasHum 

RMSE Humidity

0

0.5

1

1.5

2

2.5

3

3.5

4

 7/20 7/21 7/22 7/23 7/24

g/kg

RMSEHum RMSESHum RMSEUHum 

IOA Humidity

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 7/20 7/21 7/22 7/23 7/24

IOAHum 

158 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 79 

Observed/Predicted Windspeed

0

1

2

3

4

 7/25 7/26 7/27 7/28 7/29 Average

m/s

Wind Spd Mean OBS Wind Spd Mean PRD

Bias/Gross Error Windspeed

0

0.5

1

1.5

 7/25 7/26 7/27 7/28 7/29 Average

m/s

Wind Spd Bias Wind Spd Gross Error

RMSE Windspeed

0

0.5

1

1.5

2

 7/25 7/26 7/27 7/28 7/29 Average

m/s

Wind Spd RMSE Wind Spd Sys RMSE Wind Spd Unsys RMSE

IOA Windspeed

0

0.5

1

 7/25 7/26 7/27 7/28 7/29 Average

Wind Spd IOA

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 7/25 7/26 7/27 7/28 7/29 Average

deg

Wind Dir Mean OBS Wind Dir Mean PRD

Bias/Gross Error Wind Direction

-90

-60

-30

0

30

60

90

 7/25 7/26 7/27 7/28 7/29 Average

deg

Wind Dir Bias Wind Dir Gross Error

159 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 80 

Observed/Predicted Windspeed

0

1

2

3

4

5

 7/25 7/26 7/27 7/28 7/29

m/s

ObsWndSpd PrdWndSpd 

Bias Windspeed

-0.5

0

0.5

1

1.5

2

 7/25 7/26 7/27 7/28 7/29

m/s

BiasWndSpd

RMSE Windspeed

0

0.5

1

1.5

2

2.5

 7/25 7/26 7/27 7/28 7/29

m/s

RMSEWndSpd RMSESWndSp RMSEUWndSp

IOA Windspeed

0

0.2

0.4

0.6

0.8

1

 7/25 7/26 7/27 7/28 7/29

IOAWndSpd 

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 7/25 7/26 7/27 7/28 7/29

deg

ObsWndDir PrdWndDir 

160 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 81 

Observed/Predicted Temperature

296

297

298

299

300

301

302

 7/25 7/26 7/27 7/28 7/29 Average

K

Temp Mean OBS Temp Mean PRD

Bias/Gross Error Temperature

-0.5

0

0.5

1

1.5

2

 7/25 7/26 7/27 7/28 7/29 Average

K

Temp Bias Temp Gross Error

RMSE Temperature

0

0.5

1

1.5

2

2.5

 7/25 7/26 7/27 7/28 7/29 Average

K

Temp RMSE Temp Sys RMSE Temp Unsys RMSE

IOA Temperature

0

0.2

0.4

0.6

0.8

1

 7/25 7/26 7/27 7/28 7/29 Average

Temp IOA

161 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 82 

Observed/Predicted Temperature

288

290

292

294

296

298

300

302

304

306

308

 7/25 7/26 7/27 7/28 7/29

K

ObsTemp PrdTemp 

Bias Temperature

-1.5

-1

-0.5

0

0.5

1

1.5

 7/25 7/26 7/27 7/28 7/29

K

BiasTemp 

RMSE Temperature

0

0.5

1

1.5

2

2.5

3

3.5

4

 7/25 7/26 7/27 7/28 7/29

K

RMSETemp RMSESTemp RMSEUTemp 

IOA Temperature

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 7/25 7/26 7/27 7/28 7/29

IOATemp 

162 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 83 

Observed/Predicted Humidity

16.2

16.4

16.6

16.8

17

17.2

17.4

17.6

17.8

 7/25 7/26 7/27 7/28 7/29 Average

g/kg

Humdity Mean OBS Humdity Mean PRD

Bias/Gross Error Humidity

-0.5

0

0.5

1

1.5

2

 7/25 7/26 7/27 7/28 7/29 Average

g/kg

Humdity Bias Humdity Gross Error

RMSE Humidity

0

0.5

1

1.5

2

2.5

 7/25 7/26 7/27 7/28 7/29 Average

g/kg

Humdity RMSE Humdity Sys RMSE Humdity Unsys RMSE

IOA Humidity

0

0.2

0.4

0.6

0.8

1

 7/25 7/26 7/27 7/28 7/29 Average

Humdity IOA

163 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 84 

Predicted/Observed Humidity

14

14.5

15

15.5

16

16.5

17

17.5

18

18.5

19

 7/25 7/26 7/27 7/28 7/29

g/kg

ObsHum PrdHum 

Bias Humidity

-2

-1.5

-1

-0.5

0

0.5

1

1.5

2

 7/25 7/26 7/27 7/28 7/29

g/kg

BiasHum 

RMSE Humidity

0

0.5

1

1.5

2

2.5

3

3.5

 7/25 7/26 7/27 7/28 7/29

g/kg

RMSEHum RMSESHum RMSEUHum 

IOA Humidity

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 7/25 7/26 7/27 7/28 7/29

IOAHum 

164 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 85 

Observed/Predicted Windspeed

0

1

2

3

4

 7/30 7/31 8/01 8/02 8/03 Average

m/s

Wind Spd Mean OBS Wind Spd Mean PRD

Bias/Gross Error Windspeed

0

0.5

1

1.5

 7/30 7/31 8/01 8/02 8/03 Average

m/s

Wind Spd Bias Wind Spd Gross Error

RMSE Windspeed

0

0.5

1

1.5

2

 7/30 7/31 8/01 8/02 8/03 Average

m/s

Wind Spd RMSE Wind Spd Sys RMSE Wind Spd Unsys RMSE

IOA Windspeed

0

0.5

1

 7/30 7/31 8/01 8/02 8/03 Average

Wind Spd IOA

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 7/30 7/31 8/01 8/02 8/03 Average

deg

Wind Dir Mean OBS Wind Dir Mean PRD

Bias/Gross Error Wind Direction

-90

-60

-30

0

30

60

90

 7/30 7/31 8/01 8/02 8/03 Average

deg

Wind Dir Bias Wind Dir Gross Error

165 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 86 

Observed/Predicted Windspeed

0

1

2

3

4

5

 7/30 7/31 8/ 1 8/ 2 8/ 3

m/s

ObsWndSpd PrdWndSpd 

Bias Windspeed

-2

-1

0

1

2

 7/30 7/31 8/ 1 8/ 2 8/ 3

m/s

BiasWndSpd

RMSE Windspeed

0

1

2

3

 7/30 7/31 8/ 1 8/ 2 8/ 3

m/s

RMSEWndSpd RMSESWndSp RMSEUWndSp

IOA Windspeed

0

0.2

0.4

0.6

0.8

1

 7/30 7/31 8/ 1 8/ 2 8/ 3

IOAWndSpd 

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 7/30 7/31 8/ 1 8/ 2 8/ 3

deg

ObsWndDir PrdWndDir 

Bias Wind Direction

-90

-60

-30

0

30

60

90

 7/30 7/31 8/ 1 8/ 2 8/ 3

deg

BiasWndDir

166 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 87 

Observed/Predicted Temperature

298.5

299

299.5

300

300.5

301

301.5

302

 7/30 7/31 8/01 8/02 8/03 Average

K

Temp Mean OBS Temp Mean PRD

Bias/Gross Error Temperature

0

0.5

1

1.5

2

 7/30 7/31 8/01 8/02 8/03 Average

K

Temp Bias Temp Gross Error

RMSE Temperature

0

0.5

1

1.5

2

2.5

 7/30 7/31 8/01 8/02 8/03 Average

K

Temp RMSE Temp Sys RMSE Temp Unsys RMSE

IOA Temperature

0

0.2

0.4

0.6

0.8

1

 7/30 7/31 8/01 8/02 8/03 Average

Temp IOA

167 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 88 

Observed/Predicted Temperature

288

290

292

294

296

298

300

302

304

306

308

310

 7/30 7/31 8/ 1 8/ 2 8/ 3

K

ObsTemp PrdTemp 

Bias Temperature

-1.5

-1

-0.5

0

0.5

1

1.5

2

 7/30 7/31 8/ 1 8/ 2 8/ 3

K

BiasTemp 

RMSE Temperature

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

 7/30 7/31 8/ 1 8/ 2 8/ 3

K

RMSETemp RMSESTemp RMSEUTemp 

IOA Temperature

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 7/30 7/31 8/ 1 8/ 2 8/ 3

IOATemp 

168 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 89 

Observed/Predicted Humidity

13.5

14

14.5

15

15.5

16

16.5

17

17.5

 7/30 7/31 8/01 8/02 8/03 Average

g/kg

Humdity Mean OBS Humdity Mean PRD

Bias/Gross Error Humidity

-1.5

-1

-0.5

0

0.5

1

1.5

2

2.5

 7/30 7/31 8/01 8/02 8/03 Average

g/kg

Humdity Bias Humdity Gross Error

RMSE Humidity

0

0.5

1

1.5

2

2.5

3

 7/30 7/31 8/01 8/02 8/03 Average

g/kg

Humdity RMSE Humdity Sys RMSE Humdity Unsys RMSE

IOA Humidity

0

0.2

0.4

0.6

0.8

1

 7/30 7/31 8/01 8/02 8/03 Average

Humdity IOA

169 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 90 

Predicted/Observed Humidity

0

2

4

6

8

10

12

14

16

18

20

 7/30 7/31 8/ 1 8/ 2 8/ 3

g/kg

ObsHum PrdHum 

Bias Humidity

-2.5

-2

-1.5

-1

-0.5

0

0.5

1

1.5

2

2.5

 7/30 7/31 8/ 1 8/ 2 8/ 3

g/kg

BiasHum 

RMSE Humidity

0

0.5

1

1.5

2

2.5

3

3.5

 7/30 7/31 8/ 1 8/ 2 8/ 3

g/kg

RMSEHum RMSESHum RMSEUHum 

IOA Humidity

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 7/30 7/31 8/ 1 8/ 2 8/ 3

IOAHum 

170 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 91 

Observed/Predicted Windspeed

0

1

2

3

4

 8/04 8/05 8/06 8/07 8/08 Average

m/s

Wind Spd Mean OBS Wind Spd Mean PRD

Bias/Gross Error Windspeed

0

0.5

1

1.5

2

 8/04 8/05 8/06 8/07 8/08 Average

m/s

Wind Spd Bias Wind Spd Gross Error

RMSE Windspeed

0

0.5

1

1.5

2

 8/04 8/05 8/06 8/07 8/08 Average

m/s

Wind Spd RMSE Wind Spd Sys RMSE Wind Spd Unsys RMSE

IOA Windspeed

0

0.5

1

 8/04 8/05 8/06 8/07 8/08 Average

Wind Spd IOA

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 8/04 8/05 8/06 8/07 8/08 Average

deg

Wind Dir Mean OBS Wind Dir Mean PRD

Bias/Gross Error Wind Direction

-90

-60

-30

0

30

60

90

 8/04 8/05 8/06 8/07 8/08 Average

deg

Wind Dir Bias Wind Dir Gross Error

171 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 92 

Observed/Predicted Windspeed

0

2

4

6

 8/ 4 8/ 5 8/ 6 8/ 7 8/ 8

m/s

ObsWndSpd PrdWndSpd 

Bias Windspeed

-2

-1

0

1

2

3

 8/ 4 8/ 5 8/ 6 8/ 7 8/ 8

m/s

BiasWndSpd

RMSE Windspeed

0

0.5

1

1.5

2

2.5

 8/ 4 8/ 5 8/ 6 8/ 7 8/ 8

m/s

RMSEWndSpd RMSESWndSp RMSEUWndSp

IOA Windspeed

0

0.2

0.4

0.6

0.8

1

 8/ 4 8/ 5 8/ 6 8/ 7 8/ 8

IOAWndSpd 

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 8/ 4 8/ 5 8/ 6 8/ 7 8/ 8

deg

ObsWndDir PrdWndDir 

Bias Wind Direction

-90

-60

-30

0

30

60

90

 8/ 4 8/ 5 8/ 6 8/ 7 8/ 8

deg

BiasWndDir

172 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 93 

Observed/Predicted Temperature

296

297

298

299

300

301

302

 8/04 8/05 8/06 8/07 8/08 Average

K

Temp Mean OBS Temp Mean PRD

Bias/Gross Error Temperature

-1

-0.5

0

0.5

1

1.5

2

 8/04 8/05 8/06 8/07 8/08 Average

K

Temp Bias Temp Gross Error

RMSE Temperature

0

0.5

1

1.5

2

2.5

 8/04 8/05 8/06 8/07 8/08 Average

K

Temp RMSE Temp Sys RMSE Temp Unsys RMSE

IOA Temperature

0

0.2

0.4

0.6

0.8

1

 8/04 8/05 8/06 8/07 8/08 Average

Temp IOA

173 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 94 

Observed/Predicted Temperature

280

285

290

295

300

305

310

 8/ 4 8/ 5 8/ 6 8/ 7 8/ 8

K

ObsTemp PrdTemp 

Bias Temperature

-2

-1.5

-1

-0.5

0

0.5

1

1.5

2

 8/ 4 8/ 5 8/ 6 8/ 7 8/ 8

K

BiasTemp 

RMSE Temperature

0

0.5

1

1.5

2

2.5

3

3.5

 8/ 4 8/ 5 8/ 6 8/ 7 8/ 8

K

RMSETemp RMSESTemp RMSEUTemp 

IOA Temperature

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 8/ 4 8/ 5 8/ 6 8/ 7 8/ 8

IOATemp 

174 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 95 

Observed/Predicted Humidity

0

5

10

15

20

 8/04 8/05 8/06 8/07 8/08 Average

g/kg

Humdity Mean OBS Humdity Mean PRD

Bias/Gross Error Humidity

-1.5

-1

-0.5

0

0.5

1

1.5

2

2.5

 8/04 8/05 8/06 8/07 8/08 Average

g/kg

Humdity Bias Humdity Gross Error

RMSE Humidity

0

0.5

1

1.5

2

2.5

3

 8/04 8/05 8/06 8/07 8/08 Average

g/kg

Humdity RMSE Humdity Sys RMSE Humdity Unsys RMSE

IOA Humidity

0

0.2

0.4

0.6

0.8

1

 8/04 8/05 8/06 8/07 8/08 Average

Humdity IOA

175 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 96 

Predicted/Observed Humidity

0

2

4

6

8

10

12

14

16

18

20

 8/ 4 8/ 5 8/ 6 8/ 7 8/ 8

g/kg

ObsHum PrdHum 

Bias Humidity

-2.5

-2

-1.5

-1

-0.5

0

0.5

1

1.5

2

 8/ 4 8/ 5 8/ 6 8/ 7 8/ 8

g/kg

BiasHum 

RMSE Humidity

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

 8/ 4 8/ 5 8/ 6 8/ 7 8/ 8

g/kg

RMSEHum RMSESHum RMSEUHum 

IOA Humidity

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 8/ 4 8/ 5 8/ 6 8/ 7 8/ 8

IOAHum 

176 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 97 

Observed/Predicted Windspeed

0

1

2

3

4

 8/09 8/10 8/11 8/12 8/13 Average

m/s

Wind Spd Mean OBS Wind Spd Mean PRD

Bias/Gross Error Windspeed

0

0.5

1

1.5

2

 8/09 8/10 8/11 8/12 8/13 Average

m/s

Wind Spd Bias Wind Spd Gross Error

RMSE Windspeed

0

0.5

1

1.5

2

 8/09 8/10 8/11 8/12 8/13 Average

m/s

Wind Spd RMSE Wind Spd Sys RMSE Wind Spd Unsys RMSE

IOA Windspeed

0

0.5

1

 8/09 8/10 8/11 8/12 8/13 Average

Wind Spd IOA

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 8/09 8/10 8/11 8/12 8/13 Average

deg

Wind Dir Mean OBS Wind Dir Mean PRD

Bias/Gross Error Wind Direction

-90

-60

-30

0

30

60

90

 8/09 8/10 8/11 8/12 8/13 Average

deg

Wind Dir Bias Wind Dir Gross Error

177 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 98 

Observed/Predicted Windspeed

0

1

2

3

4

5

 8/ 9 8/10 8/11 8/12 8/13

m/s

ObsWndSpd PrdWndSpd 

Bias Windspeed

-1

0

1

2

3

 8/ 9 8/10 8/11 8/12 8/13

m/s

BiasWndSpd

RMSE Windspeed

0

0.5

1

1.5

2

2.5

 8/ 9 8/10 8/11 8/12 8/13

m/s

RMSEWndSpd RMSESWndSp RMSEUWndSp

IOA Windspeed

0

0.2

0.4

0.6

0.8

1

 8/ 9 8/10 8/11 8/12 8/13

IOAWndSpd 

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 8/ 9 8/10 8/11 8/12 8/13

deg

ObsWndDir PrdWndDir 

Bias Wind Direction

-90

-60

-30

0

30

60

90

 8/ 9 8/10 8/11 8/12 8/13

deg

BiasWndDir

178 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 99 

Observed/Predicted Temperature

296.5

297

297.5

298

298.5

299

299.5

300

 8/09 8/10 8/11 8/12 8/13 Average

K

Temp Mean OBS Temp Mean PRD

Bias/Gross Error Temperature

0

0.5

1

1.5

2

2.5

 8/09 8/10 8/11 8/12 8/13 Average

K

Temp Bias Temp Gross Error

RMSE Temperature

0

0.5

1

1.5

2

2.5

3

 8/09 8/10 8/11 8/12 8/13 Average

K

Temp RMSE Temp Sys RMSE Temp Unsys RMSE

IOA Temperature

0

0.2

0.4

0.6

0.8

1

 8/09 8/10 8/11 8/12 8/13 Average

Temp IOA

179 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 100 

Observed/Predicted Temperature

280

285

290

295

300

305

310

 8/ 9 8/10 8/11 8/12 8/13

K

ObsTemp PrdTemp 

Bias Temperature

-2

-1.5

-1

-0.5

0

0.5

1

1.5

2

2.5

 8/ 9 8/10 8/11 8/12 8/13

K

BiasTemp 

RMSE Temperature

0

0.5

1

1.5

2

2.5

3

3.5

4

 8/ 9 8/10 8/11 8/12 8/13

K

RMSETemp RMSESTemp RMSEUTemp 

IOA Temperature

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 8/ 9 8/10 8/11 8/12 8/13

IOATemp 

180 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 101 

Observed/Predicted Humidity

0

2

4

6

8

10

12

14

16

 8/09 8/10 8/11 8/12 8/13 Average

g/kg

Humdity Mean OBS Humdity Mean PRD

Bias/Gross Error Humidity

-2

-1.5

-1

-0.5

0

0.5

1

1.5

2

2.5

 8/09 8/10 8/11 8/12 8/13 Average

g/kg

Humdity Bias Humdity Gross Error

RMSE Humidity

0

0.5

1

1.5

2

2.5

3

 8/09 8/10 8/11 8/12 8/13 Average

g/kg

Humdity RMSE Humdity Sys RMSE Humdity Unsys RMSE

IOA Humidity

0

0.2

0.4

0.6

0.8

1

 8/09 8/10 8/11 8/12 8/13 Average

Humdity IOA

181 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 102 

Predicted/Observed Humidity

0

2

4

6

8

10

12

14

16

 8/ 9 8/10 8/11 8/12 8/13

g/kg

ObsHum PrdHum 

Bias Humidity

-2.5

-2

-1.5

-1

-0.5

0

0.5

1

 8/ 9 8/10 8/11 8/12 8/13

g/kg

BiasHum 

RMSE Humidity

0

0.5

1

1.5

2

2.5

3

3.5

 8/ 9 8/10 8/11 8/12 8/13

g/kg

RMSEHum RMSESHum RMSEUHum 

IOA Humidity

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 8/ 9 8/10 8/11 8/12 8/13

IOAHum 

182 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 103 

Observed/Predicted Windspeed

0

1

2

3

 8/14 8/15 8/16 8/17 8/18 Average

m/s

Wind Spd Mean OBS Wind Spd Mean PRD

Bias/Gross Error Windspeed

0

0.5

1

1.5

2

 8/14 8/15 8/16 8/17 8/18 Average

m/s

Wind Spd Bias Wind Spd Gross Error

RMSE Windspeed

0

0.5

1

1.5

2

 8/14 8/15 8/16 8/17 8/18 Average

m/s

Wind Spd RMSE Wind Spd Sys RMSE Wind Spd Unsys RMSE

IOA Windspeed

0

0.5

1

 8/14 8/15 8/16 8/17 8/18 Average

Wind Spd IOA

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 8/14 8/15 8/16 8/17 8/18 Average

deg

Wind Dir Mean OBS Wind Dir Mean PRD

Bias/Gross Error Wind Direction

-90

-60

-30

0

30

60

90

 8/14 8/15 8/16 8/17 8/18 Average

deg

Wind Dir Bias Wind Dir Gross Error

183 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 104 

Observed/Predicted Windspeed

0

1

2

3

4

5

 8/14 8/15 8/16 8/17 8/18

m/s

ObsWndSpd PrdWndSpd 

Bias Windspeed

-2

-1

0

1

2

 8/14 8/15 8/16 8/17 8/18

m/s

BiasWndSpd

RMSE Windspeed

0

1

2

3

 8/14 8/15 8/16 8/17 8/18

m/s

RMSEWndSpd RMSESWndSp RMSEUWndSp

IOA Windspeed

0

0.2

0.4

0.6

0.8

1

 8/14 8/15 8/16 8/17 8/18

IOAWndSpd 

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 8/14 8/15 8/16 8/17 8/18

deg

ObsWndDir PrdWndDir 

Bias Wind Direction

-90

-60

-30

0

30

60

90

 8/14 8/15 8/16 8/17 8/18

deg

BiasWndDir

184 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 105 

Observed/Predicted Temperature

298.5

299

299.5

300

300.5

301

 8/14 8/15 8/16 8/17 8/18 Average

K

Temp Mean OBS Temp Mean PRD

Bias/Gross Error Temperature

0

0.5

1

1.5

2

 8/14 8/15 8/16 8/17 8/18 Average

K

Temp Bias Temp Gross Error

RMSE Temperature

0

0.5

1

1.5

2

2.5

 8/14 8/15 8/16 8/17 8/18 Average

K

Temp RMSE Temp Sys RMSE Temp Unsys RMSE

IOA Temperature

0

0.2

0.4

0.6

0.8

1

 8/14 8/15 8/16 8/17 8/18 Average

Temp IOA

185 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 106 

Observed/Predicted Temperature

288

290

292

294

296

298

300

302

304

306

308

 8/14 8/15 8/16 8/17 8/18

K

ObsTemp PrdTemp 

Bias Temperature

-1

-0.5

0

0.5

1

1.5

2

 8/14 8/15 8/16 8/17 8/18

K

BiasTemp 

RMSE Temperature

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

 8/14 8/15 8/16 8/17 8/18

K

RMSETemp RMSESTemp RMSEUTemp 

IOA Temperature

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 8/14 8/15 8/16 8/17 8/18

IOATemp 

186 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 107 

Observed/Predicted Humidity

13.5

14

14.5

15

15.5

16

16.5

17

17.5

18

 8/14 8/15 8/16 8/17 8/18 Average

g/kg

Humdity Mean OBS Humdity Mean PRD

Bias/Gross Error Humidity

-1.5

-1

-0.5

0

0.5

1

1.5

2

 8/14 8/15 8/16 8/17 8/18 Average

g/kg

Humdity Bias Humdity Gross Error

RMSE Humidity

0

0.5

1

1.5

2

2.5

 8/14 8/15 8/16 8/17 8/18 Average

g/kg

Humdity RMSE Humdity Sys RMSE Humdity Unsys RMSE

IOA Humidity

0

0.2

0.4

0.6

0.8

1

 8/14 8/15 8/16 8/17 8/18 Average

Humdity IOA

187 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 108 

Predicted/Observed Humidity

0

2

4

6

8

10

12

14

16

18

20

 8/14 8/15 8/16 8/17 8/18

g/kg

ObsHum PrdHum 

Bias Humidity

-2.5

-2

-1.5

-1

-0.5

0

0.5

1

1.5

 8/14 8/15 8/16 8/17 8/18

g/kg

BiasHum 

RMSE Humidity

0

0.5

1

1.5

2

2.5

3

3.5

 8/14 8/15 8/16 8/17 8/18

g/kg

RMSEHum RMSESHum RMSEUHum 

IOA Humidity

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 8/14 8/15 8/16 8/17 8/18

IOAHum 

188 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 109 

Observed/Predicted Windspeed

0

1

2

3

 8/19 8/20 8/21 8/22 8/23 Average

m/s

Wind Spd Mean OBS Wind Spd Mean PRD

Bias/Gross Error Windspeed

0

0.5

1

1.5

 8/19 8/20 8/21 8/22 8/23 Average

m/s

Wind Spd Bias Wind Spd Gross Error

RMSE Windspeed

0

0.5

1

1.5

2

 8/19 8/20 8/21 8/22 8/23 Average

m/s

Wind Spd RMSE Wind Spd Sys RMSE Wind Spd Unsys RMSE

IOA Windspeed

0

0.5

1

 8/19 8/20 8/21 8/22 8/23 Average

Wind Spd IOA

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 8/19 8/20 8/21 8/22 8/23 Average

deg

Wind Dir Mean OBS Wind Dir Mean PRD

Bias/Gross Error Wind Direction

-90

-60

-30

0

30

60

90

 8/19 8/20 8/21 8/22 8/23 Average

deg

Wind Dir Bias Wind Dir Gross Error

189 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 110 

Observed/Predicted Windspeed

0

1

2

3

4

 8/19 8/20 8/21 8/22 8/23

m/s

ObsWndSpd PrdWndSpd 

Bias Windspeed

-2

-1

0

1

2

 8/19 8/20 8/21 8/22 8/23

m/s

BiasWndSpd

RMSE Windspeed

0

0.5

1

1.5

2

2.5

 8/19 8/20 8/21 8/22 8/23

m/s

RMSEWndSpd RMSESWndSp RMSEUWndSp

IOA Windspeed

0

0.2

0.4

0.6

0.8

1

 8/19 8/20 8/21 8/22 8/23

IOAWndSpd 

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 8/19 8/20 8/21 8/22 8/23

deg

ObsWndDir PrdWndDir 

Bias Wind Direction

-90

-60

-30

0

30

60

90

 8/19 8/20 8/21 8/22 8/23

deg

BiasWndDir

190 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 111 

Observed/Predicted Temperature

298

298.5

299

299.5

300

300.5

301

301.5

302

 8/19 8/20 8/21 8/22 8/23 Average

K

Temp Mean OBS Temp Mean PRD

Bias/Gross Error Temperature

-0.5

0

0.5

1

1.5

2

2.5

 8/19 8/20 8/21 8/22 8/23 Average

K

Temp Bias Temp Gross Error

RMSE Temperature

0

0.5

1

1.5

2

2.5

3

 8/19 8/20 8/21 8/22 8/23 Average

K

Temp RMSE Temp Sys RMSE Temp Unsys RMSE

IOA Temperature

0

0.2

0.4

0.6

0.8

1

 8/19 8/20 8/21 8/22 8/23 Average

Temp IOA

191 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 112 

Observed/Predicted Temperature

288

290

292

294

296

298

300

302

304

306

308

310

 8/19 8/20 8/21 8/22 8/23

K

ObsTemp PrdTemp 

Bias Temperature

-3

-2

-1

0

1

2

3

 8/19 8/20 8/21 8/22 8/23

K

BiasTemp 

RMSE Temperature

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

 8/19 8/20 8/21 8/22 8/23

K

RMSETemp RMSESTemp RMSEUTemp 

IOA Temperature

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 8/19 8/20 8/21 8/22 8/23

IOATemp 

192 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 113 

Observed/Predicted Humidity

15.5

16

16.5

17

17.5

18

 8/19 8/20 8/21 8/22 8/23 Average

g/kg

Humdity Mean OBS Humdity Mean PRD

Bias/Gross Error Humidity

-0.5

0

0.5

1

1.5

2

2.5

 8/19 8/20 8/21 8/22 8/23 Average

g/kg

Humdity Bias Humdity Gross Error

RMSE Humidity

0

0.5

1

1.5

2

2.5

3

 8/19 8/20 8/21 8/22 8/23 Average

g/kg

Humdity RMSE Humdity Sys RMSE Humdity Unsys RMSE

IOA Humidity

0

0.2

0.4

0.6

0.8

1

 8/19 8/20 8/21 8/22 8/23 Average

Humdity IOA

193 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 114 

Predicted/Observed Humidity

0

2

4

6

8

10

12

14

16

18

20

 8/19 8/20 8/21 8/22 8/23

g/kg

ObsHum PrdHum 

Bias Humidity

-1.5

-1

-0.5

0

0.5

1

1.5

2

 8/19 8/20 8/21 8/22 8/23

g/kg

BiasHum 

RMSE Humidity

0

0.5

1

1.5

2

2.5

3

3.5

4

 8/19 8/20 8/21 8/22 8/23

g/kg

RMSEHum RMSESHum RMSEUHum 

IOA Humidity

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 8/19 8/20 8/21 8/22 8/23

IOAHum 

194 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 115 

Observed/Predicted Windspeed

0

1

2

3

4

 8/24 8/25 8/26 8/27 8/28 Average

m/s

Wind Spd Mean OBS Wind Spd Mean PRD

Bias/Gross Error Windspeed

0

0.5

1

1.5

2

 8/24 8/25 8/26 8/27 8/28 Average

m/s

Wind Spd Bias Wind Spd Gross Error

RMSE Windspeed

0

0.5

1

1.5

2

 8/24 8/25 8/26 8/27 8/28 Average

m/s

Wind Spd RMSE Wind Spd Sys RMSE Wind Spd Unsys RMSE

IOA Windspeed

0

0.5

1

 8/24 8/25 8/26 8/27 8/28 Average

Wind Spd IOA

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 8/24 8/25 8/26 8/27 8/28 Average

deg

Wind Dir Mean OBS Wind Dir Mean PRD

Bias/Gross Error Wind Direction

-90

-60

-30

0

30

60

90

 8/24 8/25 8/26 8/27 8/28 Average

deg

Wind Dir Bias Wind Dir Gross Error

195 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 116 

Observed/Predicted Windspeed

0

1

2

3

4

5

 8/24 8/25 8/26 8/27 8/28

m/s

ObsWndSpd PrdWndSpd 

Bias Windspeed

-2

-1

0

1

2

 8/24 8/25 8/26 8/27 8/28

m/s

BiasWndSpd

RMSE Windspeed

0

0.5

1

1.5

2

2.5

 8/24 8/25 8/26 8/27 8/28

m/s

RMSEWndSpd RMSESWndSp RMSEUWndSp

IOA Windspeed

0

0.2

0.4

0.6

0.8

1

 8/24 8/25 8/26 8/27 8/28

IOAWndSpd 

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 8/24 8/25 8/26 8/27 8/28

deg

ObsWndDir PrdWndDir 

Bias Wind Direction

-90

-60

-30

0

30

60

90

 8/24 8/25 8/26 8/27 8/28

deg

BiasWndDir

196 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Observed/Predicted Temperature

294

295

296

297

298

299

300

301

302

303

 8/24 8/25 8/26 8/27 8/28 Average

K

Temp Mean OBS Temp Mean PRD

Bias/Gross Error Temperature

-0.5

0

0.5

1

1.5

2

 8/24 8/25 8/26 8/27 8/28 Average

K

Temp Bias Temp Gross Error

RMSE Temperature

0

0.5

1

1.5

2

2.5

3

 8/24 8/25 8/26 8/27 8/28 Average

K

Temp RMSE Temp Sys RMSE Temp Unsys RMSE

IOA Temperature

0

0.2

0.4

0.6

0.8

1

 8/24 8/25 8/26 8/27 8/28 Average

Temp IOA

197 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 117 

Observed/Predicted Temperature

285

290

295

300

305

310

 8/24 8/25 8/26 8/27 8/28

K

ObsTemp PrdTemp 

Bias Temperature

-1

-0.5

0

0.5

1

1.5

 8/24 8/25 8/26 8/27 8/28

K

BiasTemp 

RMSE Temperature

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

5

 8/24 8/25 8/26 8/27 8/28

K

RMSETemp RMSESTemp RMSEUTemp 

IOA Temperature

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 8/24 8/25 8/26 8/27 8/28

IOATemp 

198 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 118 

Observed/Predicted Humidity

15

15.5

16

16.5

17

17.5

 8/24 8/25 8/26 8/27 8/28 Average

g/kg

Humdity Mean OBS Humdity Mean PRD

Bias/Gross Error Humidity

-0.5

0

0.5

1

1.5

2

 8/24 8/25 8/26 8/27 8/28 Average

g/kg

Humdity Bias Humdity Gross Error

RMSE Humidity

0

0.5

1

1.5

2

2.5

 8/24 8/25 8/26 8/27 8/28 Average

g/kg

Humdity RMSE Humdity Sys RMSE Humdity Unsys RMSE

IOA Humidity

0

0.2

0.4

0.6

0.8

1

 8/24 8/25 8/26 8/27 8/28 Average

Humdity IOA

199 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 119 

Predicted/Observed Humidity

0

2

4

6

8

10

12

14

16

18

20

 8/24 8/25 8/26 8/27 8/28

g/kg

ObsHum PrdHum 

Bias Humidity

-1.5

-1

-0.5

0

0.5

1

1.5

 8/24 8/25 8/26 8/27 8/28

g/kg

BiasHum 

RMSE Humidity

0

0.5

1

1.5

2

2.5

3

3.5

4

 8/24 8/25 8/26 8/27 8/28

g/kg

RMSEHum RMSESHum RMSEUHum 

IOA Humidity

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 8/24 8/25 8/26 8/27 8/28

IOAHum 

200 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 120 

Observed/Predicted Windspeed

0

1

2

3

4

 8/29 8/30 8/31 9/01 9/02 Average

m/s

Wind Spd Mean OBS Wind Spd Mean PRD

Bias/Gross Error Windspeed

0

0.5

1

1.5

 8/29 8/30 8/31 9/01 9/02 Average

m/s

Wind Spd Bias Wind Spd Gross Error

RMSE Windspeed

0

0.5

1

1.5

2

 8/29 8/30 8/31 9/01 9/02 Average

m/s

Wind Spd RMSE Wind Spd Sys RMSE Wind Spd Unsys RMSE

IOA Windspeed

0

0.5

1

 8/29 8/30 8/31 9/01 9/02 Average

Wind Spd IOA

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 8/29 8/30 8/31 9/01 9/02 Average

deg

Wind Dir Mean OBS Wind Dir Mean PRD

Bias/Gross Error Wind Direction

-90

-60

-30

0

30

60

90

 8/29 8/30 8/31 9/01 9/02 Average

deg

Wind Dir Bias Wind Dir Gross Error

201 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 121 

Observed/Predicted Windspeed

0

1

2

3

4

5

 8/29 8/30 8/31 9/ 1 9/ 2

m/s

ObsWndSpd PrdWndSpd 

Bias Windspeed

-0.5

0

0.5

1

1.5

2

 8/29 8/30 8/31 9/ 1 9/ 2

m/s

BiasWndSpd

RMSE Windspeed

0

0.5

1

1.5

2

2.5

 8/29 8/30 8/31 9/ 1 9/ 2

m/s

RMSEWndSpd RMSESWndSp RMSEUWndSp

IOA Windspeed

0

0.2

0.4

0.6

0.8

1

 8/29 8/30 8/31 9/ 1 9/ 2

IOAWndSpd 

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 8/29 8/30 8/31 9/ 1 9/ 2

deg

ObsWndDir PrdWndDir 

Bias Wind Direction

-90

-60

-30

0

30

60

90

 8/29 8/30 8/31 9/ 1 9/ 2

deg

BiasWndDir

202 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 122 

Observed/Predicted Temperature

295.5

296

296.5

297

297.5

298

 8/29 8/30 8/31 9/01 9/02 Average

K

Temp Mean OBS Temp Mean PRD

Bias/Gross Error Temperature

0

0.2

0.4

0.6

0.8

1

1.2

1.4

1.6

 8/29 8/30 8/31 9/01 9/02 Average

K

Temp Bias Temp Gross Error

RMSE Temperature

0

0.5

1

1.5

2

2.5

 8/29 8/30 8/31 9/01 9/02 Average

K

Temp RMSE Temp Sys RMSE Temp Unsys RMSE

IOA Temperature

0

0.2

0.4

0.6

0.8

1

 8/29 8/30 8/31 9/01 9/02 Average

Temp IOA

203 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 123 

Observed/Predicted Temperature

288

290

292

294

296

298

300

302

304

 8/29 8/30 8/31 9/ 1 9/ 2

K

ObsTemp PrdTemp 

Bias Temperature

-1.5

-1

-0.5

0

0.5

1

1.5

2

2.5

 8/29 8/30 8/31 9/ 1 9/ 2

K

BiasTemp 

RMSE Temperature

0

0.5

1

1.5

2

2.5

3

3.5

4

 8/29 8/30 8/31 9/ 1 9/ 2

K

RMSETemp RMSESTemp RMSEUTemp 

IOA Temperature

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 8/29 8/30 8/31 9/ 1 9/ 2

IOATemp 

204 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 124 

Observed/Predicted Humidity

13.5

14

14.5

15

15.5

16

16.5

 8/29 8/30 8/31 9/01 9/02 Average

g/kg

Humdity Mean OBS Humdity Mean PRD

Bias/Gross Error Humidity

-1.5

-1

-0.5

0

0.5

1

1.5

2

 8/29 8/30 8/31 9/01 9/02 Average

g/kg

Humdity Bias Humdity Gross Error

RMSE Humidity

0

0.5

1

1.5

2

 8/29 8/30 8/31 9/01 9/02 Average

g/kg

Humdity RMSE Humdity Sys RMSE Humdity Unsys RMSE

IOA Humidity

0

0.2

0.4

0.6

0.8

1

 8/29 8/30 8/31 9/01 9/02 Average

Humdity IOA

205 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 125 

Predicted/Observed Humidity

13

13.5

14

14.5

15

15.5

16

16.5

17

 8/29 8/30 8/31 9/ 1 9/ 2

g/kg

ObsHum PrdHum 

Bias Humidity

-2

-1.8

-1.6

-1.4

-1.2

-1

-0.8

-0.6

-0.4

-0.2

0

 8/29 8/30 8/31 9/ 1 9/ 2

g/kg

BiasHum 

RMSE Humidity

0

0.5

1

1.5

2

2.5

3

 8/29 8/30 8/31 9/ 1 9/ 2

g/kg

RMSEHum RMSESHum RMSEUHum 

IOA Humidity

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 8/29 8/30 8/31 9/ 1 9/ 2

IOAHum 

206 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 126 

Observed/Predicted Windspeed

0

2

4

6

 9/03 9/04 9/05 9/06 9/07 Average

m/s

Wind Spd Mean OBS Wind Spd Mean PRD

Bias/Gross Error Windspeed

0

0.5

1

1.5

2

 9/03 9/04 9/05 9/06 9/07 Average

m/s

Wind Spd Bias Wind Spd Gross Error

RMSE Windspeed

0

0.5

1

1.5

2

 9/03 9/04 9/05 9/06 9/07 Average

m/s

Wind Spd RMSE Wind Spd Sys RMSE Wind Spd Unsys RMSE

IOA Windspeed

0

0.5

1

 9/03 9/04 9/05 9/06 9/07 Average

Wind Spd IOA

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 9/03 9/04 9/05 9/06 9/07 Average

deg

Wind Dir Mean OBS Wind Dir Mean PRD

Bias/Gross Error Wind Direction

-90

-60

-30

0

30

60

90

 9/03 9/04 9/05 9/06 9/07 Average

deg

Wind Dir Bias Wind Dir Gross Error

207 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 127 

Observed/Predicted Windspeed

0

2

4

6

8

 9/ 3 9/ 4 9/ 5 9/ 6 9/ 7

m/s

ObsWndSpd PrdWndSpd 

Bias Windspeed

-1

0

1

2

 9/ 3 9/ 4 9/ 5 9/ 6 9/ 7

m/s

BiasWndSpd

RMSE Windspeed

0

0.5

1

1.5

2

2.5

 9/ 3 9/ 4 9/ 5 9/ 6 9/ 7

m/s

RMSEWndSpd RMSESWndSp RMSEUWndSp

IOA Windspeed

0

0.2

0.4

0.6

0.8

1

 9/ 3 9/ 4 9/ 5 9/ 6 9/ 7

IOAWndSpd 

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 9/ 3 9/ 4 9/ 5 9/ 6 9/ 7

deg

ObsWndDir PrdWndDir 

Bias Wind Direction

-90

-60

-30

0

30

60

90

 9/ 3 9/ 4 9/ 5 9/ 6 9/ 7

deg

BiasWndDir

208 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 128 

Observed/Predicted Temperature

297

297.5

298

298.5

299

299.5

300

300.5

301

 9/03 9/04 9/05 9/06 9/07 Average

K

Temp Mean OBS Temp Mean PRD

Bias/Gross Error Temperature

-0.5

0

0.5

1

1.5

2

 9/03 9/04 9/05 9/06 9/07 Average

K

Temp Bias Temp Gross Error

RMSE Temperature

0

0.5

1

1.5

2

2.5

 9/03 9/04 9/05 9/06 9/07 Average

K

Temp RMSE Temp Sys RMSE Temp Unsys RMSE

IOA Temperature

0

0.2

0.4

0.6

0.8

1

 9/03 9/04 9/05 9/06 9/07 Average

Temp IOA

209 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 129 

Observed/Predicted Temperature

285

290

295

300

305

310

 9/ 3 9/ 4 9/ 5 9/ 6 9/ 7

K

ObsTemp PrdTemp 

Bias Temperature

-1.5

-1

-0.5

0

0.5

1

1.5

2

2.5

 9/ 3 9/ 4 9/ 5 9/ 6 9/ 7

K

BiasTemp 

RMSE Temperature

0

0.5

1

1.5

2

2.5

3

3.5

4

 9/ 3 9/ 4 9/ 5 9/ 6 9/ 7

K

RMSETemp RMSESTemp RMSEUTemp 

IOA Temperature

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 9/ 3 9/ 4 9/ 5 9/ 6 9/ 7

IOATemp 

210 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 130 

Observed/Predicted Humidity

12.5

13

13.5

14

14.5

15

15.5

16

 9/03 9/04 9/05 9/06 9/07 Average

g/kg

Humdity Mean OBS Humdity Mean PRD

Bias/Gross Error Humidity

-3

-2

-1

0

1

2

3

 9/03 9/04 9/05 9/06 9/07 Average

g/kg

Humdity Bias Humdity Gross Error

RMSE Humidity

0

0.5

1

1.5

2

2.5

3

 9/03 9/04 9/05 9/06 9/07 Average

g/kg

Humdity RMSE Humdity Sys RMSE Humdity Unsys RMSE

IOA Humidity

0

0.2

0.4

0.6

0.8

1

 9/03 9/04 9/05 9/06 9/07 Average

Humdity IOA

211 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 131 

Predicted/Observed Humidity

0

2

4

6

8

10

12

14

16

18

 9/ 3 9/ 4 9/ 5 9/ 6 9/ 7

g/kg

ObsHum PrdHum 

Bias Humidity

-3

-2.5

-2

-1.5

-1

-0.5

0

0.5

1

 9/ 3 9/ 4 9/ 5 9/ 6 9/ 7

g/kg

BiasHum 

RMSE Humidity

0

0.5

1

1.5

2

2.5

3

3.5

4

 9/ 3 9/ 4 9/ 5 9/ 6 9/ 7

g/kg

RMSEHum RMSESHum RMSEUHum 

IOA Humidity

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 9/ 3 9/ 4 9/ 5 9/ 6 9/ 7

IOAHum 

212 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 132 

Observed/Predicted Windspeed

0

1

2

3

4

 9/08 9/09 9/10 9/11 9/12 Average

m/s

Wind Spd Mean OBS Wind Spd Mean PRD

Bias/Gross Error Windspeed

0

0.5

1

1.5

2

 9/08 9/09 9/10 9/11 9/12 Average

m/s

Wind Spd Bias Wind Spd Gross Error

RMSE Windspeed

0

0.5

1

1.5

2

 9/08 9/09 9/10 9/11 9/12 Average

m/s

Wind Spd RMSE Wind Spd Sys RMSE Wind Spd Unsys RMSE

IOA Windspeed

0

0.5

1

 9/08 9/09 9/10 9/11 9/12 Average

Wind Spd IOA

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 9/08 9/09 9/10 9/11 9/12 Average

deg

Wind Dir Mean OBS Wind Dir Mean PRD

Bias/Gross Error Wind Direction

-90

-60

-30

0

30

60

90

 9/08 9/09 9/10 9/11 9/12 Average

deg

Wind Dir Bias Wind Dir Gross Error

213 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 133 

Observed/Predicted Windspeed

0

2

4

6

 9/ 8 9/ 9 9/10 9/11 9/12

m/s

ObsWndSpd PrdWndSpd 

Bias Windspeed

-1

0

1

2

3

 9/ 8 9/ 9 9/10 9/11 9/12

m/s

BiasWndSpd

RMSE Windspeed

0

0.5

1

1.5

2

2.5

 9/ 8 9/ 9 9/10 9/11 9/12

m/s

RMSEWndSpd RMSESWndSp RMSEUWndSp

IOA Windspeed

0

0.2

0.4

0.6

0.8

1

 9/ 8 9/ 9 9/10 9/11 9/12

IOAWndSpd 

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 9/ 8 9/ 9 9/10 9/11 9/12

deg

ObsWndDir PrdWndDir 

Bias Wind Direction

-90

-60

-30

0

30

60

90

 9/ 8 9/ 9 9/10 9/11 9/12

deg

BiasWndDir

214 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 134 

Observed/Predicted Temperature

297

297.5

298

298.5

299

299.5

300

300.5

 9/08 9/09 9/10 9/11 9/12 Average

K

Temp Mean OBS Temp Mean PRD

Bias/Gross Error Temperature

0

0.5

1

1.5

2

 9/08 9/09 9/10 9/11 9/12 Average

K

Temp Bias Temp Gross Error

RMSE Temperature

0

0.5

1

1.5

2

2.5

 9/08 9/09 9/10 9/11 9/12 Average

K

Temp RMSE Temp Sys RMSE Temp Unsys RMSE

IOA Temperature

0

0.2

0.4

0.6

0.8

1

 9/08 9/09 9/10 9/11 9/12 Average

Temp IOA

215 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 135 

Observed/Predicted Temperature

280

285

290

295

300

305

310

 9/ 8 9/ 9 9/10 9/11 9/12

K

ObsTemp PrdTemp 

Bias Temperature

-1.5

-1

-0.5

0

0.5

1

1.5

2

2.5

 9/ 8 9/ 9 9/10 9/11 9/12

K

BiasTemp 

RMSE Temperature

0

0.5

1

1.5

2

2.5

3

3.5

 9/ 8 9/ 9 9/10 9/11 9/12

K

RMSETemp RMSESTemp RMSEUTemp 

IOA Temperature

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 9/ 8 9/ 9 9/10 9/11 9/12

IOATemp 

216 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 136 

Observed/Predicted Humidity

10

10.5

11

11.5

12

12.5

13

13.5

 9/08 9/09 9/10 9/11 9/12 Average

g/kg

Humdity Mean OBS Humdity Mean PRD

Bias/Gross Error Humidity

-1

-0.5

0

0.5

1

1.5

2

 9/08 9/09 9/10 9/11 9/12 Average

g/kg

Humdity Bias Humdity Gross Error

RMSE Humidity

0

0.5

1

1.5

2

2.5

 9/08 9/09 9/10 9/11 9/12 Average

g/kg

Humdity RMSE Humdity Sys RMSE Humdity Unsys RMSE

IOA Humidity

0

0.2

0.4

0.6

0.8

1

 9/08 9/09 9/10 9/11 9/12 Average

Humdity IOA

217 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 137 

Predicted/Observed Humidity

0

2

4

6

8

10

12

14

16

 9/ 8 9/ 9 9/10 9/11 9/12

g/kg

ObsHum PrdHum 

Bias Humidity

-2

-1.5

-1

-0.5

0

0.5

1

1.5

 9/ 8 9/ 9 9/10 9/11 9/12

g/kg

BiasHum 

RMSE Humidity

0

0.5

1

1.5

2

2.5

3

3.5

4

 9/ 8 9/ 9 9/10 9/11 9/12

g/kg

RMSEHum RMSESHum RMSEUHum 

IOA Humidity

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 9/ 8 9/ 9 9/10 9/11 9/12

IOAHum 

218 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 138 

Observed/Predicted Windspeed

0

1

2

3

4

 9/13 9/14 9/15 9/16 9/17 Average

m/s

Wind Spd Mean OBS Wind Spd Mean PRD

Bias/Gross Error Windspeed

0

0.5

1

1.5

2

 9/13 9/14 9/15 9/16 9/17 Average

m/s

Wind Spd Bias Wind Spd Gross Error

RMSE Windspeed

0

1

2

3

 9/13 9/14 9/15 9/16 9/17 Average

m/s

Wind Spd RMSE Wind Spd Sys RMSE Wind Spd Unsys RMSE

IOA Windspeed

0

0.5

1

 9/13 9/14 9/15 9/16 9/17 Average

Wind Spd IOA

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 9/13 9/14 9/15 9/16 9/17 Average

deg

Wind Dir Mean OBS Wind Dir Mean PRD

Bias/Gross Error Wind Direction

-90

-60

-30

0

30

60

90

 9/13 9/14 9/15 9/16 9/17 Average

deg

Wind Dir Bias Wind Dir Gross Error

219 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 139 

Observed/Predicted Windspeed

0

2

4

6

 9/13 9/14 9/15 9/16 9/17

m/s

ObsWndSpd PrdWndSpd 

Bias Windspeed

-1

-0.5

0

0.5

1

1.5

 9/13 9/14 9/15 9/16 9/17

m/s

BiasWndSpd

RMSE Windspeed

0

1

2

3

 9/13 9/14 9/15 9/16 9/17

m/s

RMSEWndSpd RMSESWndSp RMSEUWndSp

IOA Windspeed

0

0.2

0.4

0.6

0.8

1

 9/13 9/14 9/15 9/16 9/17

IOAWndSpd 

Observed/Predicted Wind Direction

0

60

120

180

240

300

360

 9/13 9/14 9/15 9/16 9/17

deg

ObsWndDir PrdWndDir 

Bias Wind Direction

-90

-60

-30

0

30

60

90

 9/13 9/14 9/15 9/16 9/17

deg

BiasWndDir

220 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 140 

Observed/Predicted Temperature

294

295

296

297

298

299

300

 9/13 9/14 9/15 9/16 9/17 Average

K

Temp Mean OBS Temp Mean PRD

Bias/Gross Error Temperature

-1

-0.5

0

0.5

1

1.5

2

2.5

 9/13 9/14 9/15 9/16 9/17 Average

K

Temp Bias Temp Gross Error

RMSE Temperature

0

0.5

1

1.5

2

2.5

3

 9/13 9/14 9/15 9/16 9/17 Average

K

Temp RMSE Temp Sys RMSE Temp Unsys RMSE

IOA Temperature

0

0.2

0.4

0.6

0.8

1

 9/13 9/14 9/15 9/16 9/17 Average

Temp IOA

221 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 141 

Observed/Predicted Temperature

288

290

292

294

296

298

300

302

304

306

 9/13 9/14 9/15 9/16 9/17

K

ObsTemp PrdTemp 

Bias Temperature

-2

-1

0

1

2

3

4

 9/13 9/14 9/15 9/16 9/17

K

BiasTemp 

RMSE Temperature

0

1

2

3

4

5

6

 9/13 9/14 9/15 9/16 9/17

K

RMSETemp RMSESTemp RMSEUTemp 

IOA Temperature

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 9/13 9/14 9/15 9/16 9/17

IOATemp 

222 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Figure 142 

Observed/Predicted Humidity

0

5

10

15

20

 9/13 9/14 9/15 9/16 9/17 Average

g/kg

Humdity Mean OBS Humdity Mean PRD

Bias/Gross Error Humidity

-2

-1.5

-1

-0.5

0

0.5

1

1.5

2

2.5

 9/13 9/14 9/15 9/16 9/17 Average

g/kg

Humdity Bias Humdity Gross Error

RMSE Humidity

0

0.5

1

1.5

2

2.5

 9/13 9/14 9/15 9/16 9/17 Average

g/kg

Humdity RMSE Humdity Sys RMSE Humdity Unsys RMSE

IOA Humidity

0

0.2

0.4

0.6

0.8

1

 9/13 9/14 9/15 9/16 9/17 Average

Humdity IOA

223 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over 

Georgia 

Figure 143

224 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

Predicted/Observed Humidity

0

2

4

6

8

10

12

14

16

18

20

 9/13 9/14 9/15 9/16 9/17

g/kg

ObsHum PrdHum 

Bias Humidity

-2.5

-2

-1.5

-1

-0.5

0

0.5

1

 9/13 9/14 9/15 9/16 9/17

g/kg

BiasHum 

RMSE Humidity

0

0.5

1

1.5

2

2.5

3

3.5

4

 9/13 9/14 9/15 9/16 9/17

g/kg

RMSEHum RMSESHum RMSEUHum 

IOA Humidity

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

 9/13 9/14 9/15 9/16 9/17

IOAHum 

225 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

226 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

227 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

228 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

229 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

230 Data & Modeling Unit, Air Protection Branch 
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231 Data & Modeling Unit, Air Protection Branch 
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232 Data & Modeling Unit, Air Protection Branch 
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233 Data & Modeling Unit, Air Protection Branch 
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234 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

235 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

236 Data & Modeling Unit, Air Protection Branch 
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237 Data & Modeling Unit, Air Protection Branch 
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238 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

239 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

240 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

241 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

242 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

243 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

244 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

245 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

246 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

247 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

248 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

249 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

250 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

251 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

252 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

253 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

254 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

255 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

256 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

257 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

258 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

259 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

260 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

261 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

262 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

263 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

264 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

265 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

266 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

267 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

268 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

269 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

270 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

271 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

272 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

273 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

274 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

275 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

276 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

277 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

278 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

279 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

280 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

281 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

282 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

283 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

284 Data & Modeling Unit, Air Protection Branch 
Additional Evaluation of the 12-km grid resolution Meteorological Model Simulation over Georgia 

285 Data & Modeling Unit, Air Protection Branch