The Atlanta Eight-Hour Ozone Attainment Demonstration 

Appendix B 

Observed and Modeled Spatial 

Distribution of Daily 8-Hour 

Maximum Ozone
Following is time series of PAVE tile plots. Each tile plot shows daily maximum 8-hour ozone 

concentrations predicted by CMAQ 12km in the 4km modeling domain from May 24, 2002 to 

September 12, 2002. Observed maximum 8-hour ozone concentrations at all AQS sites in and around 

Georgia are overlaid for the purpose of comparison. All observed ozone concentrations in each plot 

were in Eastern Standard Time. 

 2
Date CMAQ_12km CMAQ_4km 

2002-

05-24 

~2002-

05-25 

2002-

05-26 

~2002-

05-27 

2002-

05-28 

~2002-

05-29 

Figure 1 Daily maximum 8-hour ozone concentrations from 2002-05-24 to 2002-05-29 

 3
Date CMAQ_12km CMAQ_4km 

2002-

05-30 

~2002-

05-31 

2002-

06-01 

~2002-

06-02 

2002-

06-03 

~2002-

06-04 

Figure 2 Daily maximum 8-hour ozone concentrations from 2002-05-30 to 2002-06-04 

 4
Date CMAQ_12km CMAQ_4km 

2002-

06-05 

~2002-

06-06 

2002-

06-07 

~2002-

06-08 

2002-

06-09 

~2002-

06-10 

Figure 3 Daily maximum 8-hour ozone concentrations from 2002-06-05 to 2002-06-10 

 5
Date CMAQ_12km CMAQ_4km 

2002-

06-11 

~2002-

06-12 

2002-

06-13 

~2002-

06-14 

2002-

06-15 

~2002-

06-16 

Figure 4 Daily maximum 8-hour ozone concentrations from 2002-06-11 to 2002-06-16 

 6
Date CMAQ_12km CMAQ_4km 

2002-

06-17 

~2002-

06-18 

2002-

06-19 

~2002-

06-20 

2002-

06-21 

~2002-

06-22 

Figure 5 Daily maximum 8-hour ozone concentrations from 2002-06-17 to 2002-06-22 

 7
Date CMAQ_12km CMAQ_4km 

2002-

06-23 

~2002-

06-24 

2002-

06-25 

~2002-

06-26 

2002-

06-27 

~2002-

06-28 

Figure 6 Daily maximum 8-hour ozone concentrations from 2002-06-23 to 2002-06-28 

 8
Date CMAQ_12km CMAQ_4km 

2002-

06-29 

~2002-

06-30 

2002-

07-01 

~2002-

07-02 

2002-

07-03 

~2002-

07-04 

Figure 7 Daily maximum 8-hour ozone concentrations from 2002-06-29 to 2002-07-04 

 9
Date CMAQ_12km CMAQ_4km 

2002-

07-05 

~2002-

07-06 

2002-

07-07 

~2002-

07-08 

2002-

07-09 

~2002-

07-10 

Figure 8 Daily maximum 8-hour ozone concentrations from 2002-07-05 to 2002-07-10 

 10
Date CMAQ_12km CMAQ_4km 

2002-

07-11 

~2002-

07-12 

2002-

07-13 

~2002-

07-14 

2002-

07-15 

~2002-

07-16 

Figure 9 Daily maximum 8-hour ozone concentrations from 2002-07-11 to 2002-07-16 

 11
Date CMAQ_12km CMAQ_4km 

2002-

07-17 

~2002-

07-18 

2002-

07-19 

~2002-

07-20 

2002-

07-21 

~2002-

07-22 

Figure 10 Daily maximum 8-hour ozone concentrations from 2002-07-17 to 2002-07-22 

 12
Date CMAQ_12km CMAQ_4km 

2002-

07-23 

~2002-

07-24 

2002-

07-25 

~2002-

07-26 

2002-

07-27 

~2002-

07-28 

Figure 11 Daily maximum 8-hour ozone concentrations from 2002-07-23 to 2002-07-28 

 13
Date CMAQ_12km CMAQ_4km 

2002-

07-29 

~2002-

07-30 

2002-

07-31 

~2002-

08-01 

2002-

08-02 

~2002-

08-03 

Figure 12 Daily maximum 8-hour ozone concentrations from 2002-07-29 to 2002-08-03 

 14
Date CMAQ_12km CMAQ_4km 

2002-

08-04 

~2002-

08-05 

2002-

08-06 

~2002-

08-07 

2002-

08-08 

~2002-

08-09 

Figure 13 Daily maximum 8-hour ozone concentrations from 2002-08-04 to 2002-08-09 

 15
Date CMAQ_12km CMAQ_4km 

2002-

08-10 

~2002-

08-11 

2002-

08-12 

~2002-

08-13 

2002-

08-14 

~2002-

08-15 

Figure 14 Daily maximum 8-hour ozone concentrations from 2002-08-10 to 2002-08-15 

 16
Date CMAQ_12km CMAQ_4km 

2002-

08-16 

~2002-

08-17 

2002-

08-18 

~2002-

08-19 

2002-

08-20 

~2002-

08-21 

Figure 15 Daily maximum 8-hour ozone concentrations from 2002-08-16 to 2002-08-21 

 17
Date CMAQ_12km CMAQ_4km 

2002-

08-22 

~2002-

08-23 

2002-

08-24 

~2002-

08-25 

2002-

08-26 

~2002-

08-27 

Figure 16 Daily maximum 8-hour ozone concentrations from 2002-08-22 to 2002-08-27 

 18
Date CMAQ_12km CMAQ_4km 

2002-

08-28 

~2002-

08-29 

2002-

08-30 

~2002-

08-31 

2002-

09-01 

~2002-

09-02 

Figure 17 Daily maximum 8-hour ozone concentrations from 2002-08-28 to 2002-09-02 

 19
Date CMAQ_12km CMAQ_4km 

2002-

09-03 

~2002-

09-04 

2002-

09-05 

~2002-

09-06 

2002-

09-07 

~2002-

09-08 

Figure 18 Daily maximum 8-hour ozone concentrations from 2002-09-03 to 2002-09-08 

 20
Date CMAQ_12km CMAQ_4km 

2002-

09-09 

~2002-

09-10 

2002-

09-11 

~2002-

09-12 

2002-

09-13 

~2002-

09-14 

Figure 19 Daily maximum 8-hour ozone concentrations from 2002-09-09 to 2002-09-14 

 21