**National Climatic Data Center**

**DATA DOCUMENTATION**

**FOR**

**NOAA Operational Model Archive and Distribution System**

**(NOMADS)**

**North America Regional Reanalysis (NARR)**

**\"Merge\" data set**

**DATASET DSI-6175**

**March 17, 2004**

Prepared for

National Climatic Data Center

151 Patton Ave.

Asheville, NC 28801-5001 USA

**by**

**Wesley Ebisuzaki NOAA/NWS/NCEP/CPC**

**(w/ edits by Glenn Rutledge NOAA/NESDIS/NCDC)**

**5200 Auth Rd.**

**Camp Springs, MD, 20746**

**Table of Contents**

Page

[Topic Number]{.underline}

1\.
Abstract\...\...\...\...\...\...\...\...\...\...\...\...\...\...\...\...\...
3

2\. Element Names and Definitions**:**
\...\...\...\...\...\...\...\...\.... 3

3\. Start
Date\...\...\...\...\...\...\...\...\...\...\...\...\...\...\...\.... 8

4\. Stop
Date\...\...\...\...\...\...\...\...\...\...\...\...\...\...\...\..... 8

5\.
Coverage\...\...\...\...\...\...\...\...\...\...\...\...\...\...\...\...\...
8

6\. How to order
data\...\...\...\...\...\...\...\...\...\...\...\...\...\... 8

7\. Archiving Data Center.
\...\...\...\...\...\...\...\...\...\...\...\... 9

8\. Technical
Contact\...\...\...\...\...\...\...\...\...\...\...\...\...\... 9

9\. Known Uncorrected
Problems\...\...\...\...\...\...\...\...\...\...\... 9

10\. Quality
Statement\...\...\...\...\...\...\...\...\...\...\...\...\...\... 9

11\. Essential Companion Data Sets\...\...\...\...\...\...\...\...\.....
10

12\.
References\...\...\...\...\...\...\...\...\...\...\...\...\...\...\...\...
10

**1. Abstract:**

These files are from the North America Regional Reanalysis(NARR) Project
and contain the analyses and selected quantities from the 0 to 3 hours
forecast. The NARR is a reanalysis of historical observations using a 32
km version of the NCEP 1993 operational ETA model and ETA data
assimilation system (EDAS). The domain of analyses includes North and
Central America as well as small parts of the UK, Eastern Asia and South
America and the oceans in between. The period of the reanalyses is from
October 1978 to the present and analyses were made 8 times daily.
Horizontal boundary conditions were derived from the NCEP/DOE
Reanalysis.

The \"merged\" dataset provides a high spatial (32 km) and temporal (3
hour) analyses of North America and adjacent oceans and land masses from
October 1978 to the present. Advantages over the widely used NCEP/NCAR
Reanalysis are its higher resolution and a much better treatment of the
land surface through a better land-surface model (NOAH), through the
assimilation of more surface data (observed precipitation and surface
winds) and through a better representation of the terrain (heights,
vegetation, soil type).

This data set contains \"conventional\" atmospheric analyses as well as
model-derived fields which contain estimates of subsurface, surface, and
radiative properties.

This data set is encoded in WMO format GRIB version 1 using the NCEP
GRIB table 131. The data are stored on a Lambert conformal grid (AWIPS
grids 221) and efforts have been make to make the data GrADS compatible
(http://grads.iges.org/grads).

**2. Elements and Definitions:**

The files for each analysis time are named

merged_AWIP32.YYYYMMDDHH

and

merged_AWIPS32.YYYYMMDDHH.b

YYYYMMDDHH is the date code which corresponds to the analysis time or
the starting time of the forecast for model predicted quantities such as
flux or precipitation. The possible HH are

1.  03, 06, 09, 12, 15, 18, and 21. All time are in UTC.

The data for each analysis time is split into two files so that the data
will be compatible with the software program, GrADS. The \".b\" file is
much smaller and contains fields that are similar to those in the larger
file except they have some differences that GrADS does not recognize. 
For example, the \".b\" file contains 3 hour forecast of the sensible
heat flux whereas the larger file contains the average from the 0-3 hour
forecast.

These files are in GRIB 1 format using NCEP table 131. A copy of this
table can be obtained from

ftp://wesley.ncep.noaa.gov/pub/wgrib/nceptab_131

the GRIB documentation from

http://www.nco.ncep.noaa.gov/pmb/docs/on388/

and a GRIB decoder from

http://wesley.ncep.noaa.gov/wgrib.html

The data is on in a Lambert conformal grid (AWIPS grid 221)

and all vector components are earth relative rather than grids relative
which is the convention for operational NCEP model. The list of fields
produced by the NARR ETA model differs from the operational ETA model.

**Inventory of main file**

ACPCPsfc ACC\* Convective precipitation \[kg/m\^2\]

ALBDOsfc ANL\* surface Albedo \[%\]

APCPsfc ACC\* Total precipitation \[kg/m\^2\]

APCPNsfc ACC\* Total precipitation (nearest grid point) \[kg/m\^2\]

BGRUNsfc ACC\* Subsurface runoff (baseflow) \[kg/m\^2\]

BMIXLhlev1 ANL\* hybrid level 1 Blackadars mixing length scale \[m\]

CAPEsfc ANL\* surface Convective available potential energy \[J/kg\]

CAPE180_0mb ANL\* 180-0 mb above gnd Convective available potential
energy \[J/kg\]

CCONDsfc ANL\* Canopy conductance \[m/s\]

CDsfc ANL\* Surface drag coefficient \[non-dim\]

CDCONclm AVE\* atmos column Convective cloud cover \[%\]

CDLYRclm AVE\* atmos column Non-convective cloud \[%\]

CFRZRsfc 3hr\* Categorical freezing rain \[yes=1;no=0\]

CICEPsfc 3hr\* Categorical ice pellets \[yes=1;no=0\]

CINsfc ANL\* Convective inhibition \[J/kg\]

CIN180_0mb ANL\* 180-0 mb above gnd Convective inhibition \[J/kg\]

CLWMRprs ANL\* 29\* Cloud water \[kg/kg\]

CNWATsfc ANL\* Plant canopy surface water \[kg/m\^2\]

CRAINsfc 3hr\* Categorical rain \[yes=1;no=0\]

CSNOWsfc 3hr\* Categorical snow \[yes=1;no=0\]

DLWRFsfc AVE\* surface Downward longwave radiation flux \[W/m\^2\]

DPT2m ANL\* 2 m Dew point temp. \[K\]

DSWRFsfc AVE\* surface Downward shortwave radiation flux \[W/m\^2\]

EVPsfc ACC\* surface Evaporation \[kg/m\^2\]

FRICVsfc ANL\* Surface friction velocity \[m/s\]

GFLUXsfc AVE\* Ground Heat Flux \[W/m\^2\]

HCDChcl 3hr\* high cloud level High level cloud cover \[%\]

HGTprs ANL\* 29\* Geopotential height \[gpm\]

HGThlev1 ANL\* hybrid level 1 Geopotential height \[gpm\]

HGTclb ANL\* cloud base Geopotential height \[gpm\]

HGTclt ANL\* cloud top Geopotential height \[gpm\]

HGT0deg ANL\* 0C isotherm level Geopotential height \[gpm\]

HGTmwl ANL\* max wind level Geopotential height \[gpm\]

HGTtrp ANL\* tropopause Geopotential height \[gpm\]

HLCY0_3000m ANL\* 3000-0 m above ground Storm relative helicity
\[m\^2/s\^2\]

HPBLsfc ANL\* surface Planetary boundary layer height \[m\]

ICMRprs ANL\* 29\* Ice mixing ratio \[kg/kg\]

LCDClcl 3hr\* low cloud level Low level cloud cover \[%\]

LFTX500_1000mb ANL\* 500-1000 mb Surface lifted index \[K\]

LHTFLsfc AVE\* surface Latent heat flux \[W/m\^2\]

MCDCmcl 3hr\* mid-cloud level Mid level cloud cover \[%\]

MCONVprs ANL\* Horizontal moisture divergence \[kg/kg/s\]

MCONVhlev1 ANL\* hybrid level 1 Horizontal moisture divergence
\[kg/kg/s\]

MCONV30_0mb ANL\* 30-0 mb above gnd Horizontal moisture divergence
\[kg/kg/s\]

MCONV60_30mb ANL\* 60-30 mb above gnd Horizontal moisture divergence
\[kg/kg/s\]

MCONV90_60mb ANL\* 90-60 mb above gnd Horizontal moisture divergence
\[kg/kg/s\]

MCONV120_90mb ANL\* 120-90 mb above gnd Horizontal moisture divergence
\[kg/kg/s\]

MCONV150_120mb ANL\* 150-120 mb above gnd Horizontal moisture divergence
\[kg/kg/s\]

MCONV180_150mb ANL\* 180-150 mb above gnd Horizontal moisture divergence
\[kg/kg/s\]

MSLETmsl ANL\* Mean sea level pressure (ETA model) \[Pa\]

MSTAV0_100cm ANL\* 0-100 cm undergnd Moisture availability \[%\]

PEVAPsfc ACC\* surface Potential evaporation \[kg/m\^2\]

POTsfc ANL\* surface Potential temp. \[K\]

POT10m ANL\* 10 m Potential temp. \[K\]

POT30m ANL\* 30 m Potential temp. \[K\]

POThlev1 ANL\* hybrid level 1 Potential temp. \[K\]

PRATEsfc 3hr\* Precipitation rate \[kg/m\^2/s\]

PRESsfc ANL\* surface Pressure \[Pa\]

PRES2m ANL\* 2 m Pressure \[Pa\]

PRES10m ANL\* 10 m Pressure \[Pa\]

PRES30m ANL\* 30 m Pressure \[Pa\]

PREShlev1 ANL\* hybrid level 1 Pressure \[Pa\]

PRESclb ANL\* cloud base Pressure \[Pa\]

PRESclt ANL\* cloud top Pressure \[Pa\]

PRESadcl ANL\* adiabatic lifting condensation level Pressure \[Pa\]

PRESmwl ANL\* max wind level Pressure \[Pa\]

PREStrp ANL\* tropopause Pressure \[Pa\]

PRESNsfc ANL\* surface Pressure (nearest grid point) \[Pa\]

PRMSLmsl ANL\* Pressure reduced to MSL \[Pa\]

PWATclm ANL\* atmos column Precipitable water \[kg/m\^2\]

RCQsfc ANL\* surface Humidity parameter in canopy conductance
\[fraction\]

RCSsfc ANL\* surface Solar parameter in canopy conductance \[fraction\]

RCSOLsfc ANL\* surface Soil moisture parameter in canopy conductance
\[fraction\]

RCTsfc ANL\* surface Temperature parameter in canopy conductance
\[fraction\]

RH2m ANL\* 2 m Relative humidity \[%\]

RHhlev1 ANL\* hybrid level 1 Relative humidity \[%\]

RH0deg ANL\* 0C isotherm level Relative humidity \[%\]

SFEXCsfc ANL\* surface Exchange coefficient \[(kg/m\^3)(m/s)\]

SHTFLsfc AVE\* surface Sensible heat flux \[W/m\^2\]

SNODsfc ANL\* Snow depth \[m\]

SNOHFsfc AVE\* Snow phase-change heat flux \[W/m\^2\]

SNOMsfc ACC\* Snow melt \[kg/m\^2\]

SNOWCsfc ANL\* Snow cover \[%\]

SOILL0_10cm ANL\* 0-10 cm Liquid volumetric soil moisture (non-frozen)
\[fraction\]

SOILL10_40cm ANL\* 10-40 cm Liquid volumetric soil moisture (non-frozen)
\[fraction\]

SOILL40_100cm ANL\* 40-100 cm Liquid volumetric soil moisture
(non-frozen) \[fraction\]

SOILL100_200cm ANL\* 100-200 cm Liquid volumetric soil moisture
(non-frozen) \[fraction\]

SOILM0_200cm ANL\* 0-200 cm Soil moisture content \[kg/m\^2\]

SOILW0_10cm ANL\* 0-10 cm Volumetric soil moisture (frozen+liquid)
\[fraction\]

SOILW10_40cm ANL\* 10-40 cm Volumetric soil moisture (frozen+liquid)
\[fraction\]

SOILW40_100cm ANL\* 40-100 cm Volumetric soil moisture (frozen+liquid)
\[fraction\]

SOILW100_200cm ANL\* 100-200 cm Volumetric soil moisture (frozen+liquid)
\[fraction\]

SPFHprs ANL\* 29\* Specific humidity \[kg/kg\]

SPFH2m ANL\* 2 m Specific humidity \[kg/kg\]

SPFH10m ANL\* 10 m Specific humidity \[kg/kg\]

SPFH30m ANL\* 30 m Specific humidity \[kg/kg\]

SPFHhlev1 ANL\* hybrid level 1 Specific humidity \[kg/kg\]

SPFH30_0mb ANL\* 30-0 mb above gnd Specific humidity \[kg/kg\]

SPFH60_30mb ANL\* 60-30 mb above gnd Specific humidity \[kg/kg\]

SPFH90_60mb ANL\* 90-60 mb above gnd Specific humidity \[kg/kg\]

SPFH120_90mb ANL\* 120-90 mb above gnd Specific humidity \[kg/kg\]

SPFH150_120mb ANL\* 150-120 mb above gnd Specific humidity \[kg/kg\]

SPFH180_150mb ANL\* 180-150 mb above gnd Specific humidity \[kg/kg\]

SSRUNsfc ACC\* Surface runoff (non-infiltrating) \[kg/m\^2\]

TCDCclm 3hr\* atmos column Total cloud cover \[%\]

TKEprs ANL\* 15\* Turbulent Kinetic Energy \[J/kg\]

TKEhlev1 ANL\* hybrid level 1 Turbulent Kinetic Energy \[J/kg\]

TMPsfc ANL\* surface Temp. \[K\]

TMPprs ANL\* 29\* Temp. \[K\]

TMP2m ANL\* 2 m Temp. \[K\]

TMP10m ANL\* 10 m Temp. \[K\]

TMP30m ANL\* 30 m Temp. \[K\]

TMPhlev1 ANL\* hybrid level 1 Temp. \[K\]

TMP30_0mb ANL\* 30-0 mb above gnd Temp. \[K\]

TMP60_30mb ANL\* 60-30 mb above gnd Temp. \[K\]

TMP90_60mb ANL\* 90-60 mb above gnd Temp. \[K\]

TMP120_90mb ANL\* 120-90 mb above gnd Temp. \[K\]

TMP150_120mb ANL\* 150-120 mb above gnd Temp. \[K\]

TMP180_150mb ANL\* 180-150 mb above gnd Temp. \[K\]

TMPclt ANL\* cloud top Temp. \[K\]

TMPtrp ANL\* tropopause Temp. \[K\]

TSOILdpl ANL\* Soil temp. \[K\]

TSOIL0_10cm ANL\* 0-10 cm undergnd Soil temp. \[K\]

TSOIL10_40cm ANL\* 10-40 cm undergnd Soil temp. \[K\]

TSOIL40_100cm ANL\* 40-100 cm undergnd Soil temp. \[K\]

TSOIL100_200cm ANL\* 100-200 cm undergnd Soil temp. \[K\]

UFLXsfc ANL\* surface Zonal momentum flux \[N/m\^2\]

UGRDprs ANL\* 29\* u wind \[m/s\]

UGRD10m ANL\* 10 m u wind \[m/s\]

UGRD30m ANL\* 30 m u wind \[m/s\]

UGRDhlev1 ANL\* hybrid level 1 u wind \[m/s\]

UGRD30_0mb ANL\* 30-0 mb above gnd u wind \[m/s\]

UGRD60_30mb ANL\* 60-30 mb above gnd u wind \[m/s\]

UGRD90_60mb ANL\* 90-60 mb above gnd u wind \[m/s\]

UGRD120_90mb ANL\* 120-90 mb above gnd u wind \[m/s\]

UGRD150_120mb ANL\* 150-120 mb above gnd u wind \[m/s\]

UGRD180_150mb ANL\* 180-150 mb above gnd u wind \[m/s\]

UGRDmwl ANL\* max wind level u wind \[m/s\]

UGRDtrp ANL\* tropopause u wind \[m/s\]

ULWRFsfc AVE\* surface Upward long wave radiation flux \[W/m\^2\]

ULWRFtoa AVE\* top of atmos Upward long wave radiation flux \[W/m\^2\]

USTM0_6000m ANL\* 6000-0 m above ground u-component of storm motion
\[m/s\]

USWRFsfc AVE\* surface Upward short wave radiation flux \[W/m\^2\]

USWRFtoa AVE\* top of atmos Upward short wave radiation flux \[W/m\^2\]

VEGsfc ANL\* Vegetation \[%\]

VFLXsfc ANL\* surface Meridional momentum flux \[N/m\^2\]

VGRDprs ANL\* 29\* v wind \[m/s\]

VGRD10m ANL\* 10 m v wind \[m/s\]

VGRD30m ANL\* 30 m v wind \[m/s\]

VGRDhlev1 ANL\* hybrid level 1 v wind \[m/s\]

VGRD30_0mb ANL\* 30-0 mb above gnd v wind \[m/s\]

VGRD60_30mb ANL\* 60-30 mb above gnd v wind \[m/s\]

VGRD90_60mb ANL\* 90-60 mb above gnd v wind \[m/s\]

VGRD120_90mb ANL\* 120-90 mb above gnd v wind \[m/s\]

VGRD150_120mb ANL\* 150-120 mb above gnd v wind \[m/s\]

VGRD180_150mb ANL\* 180-150 mb above gnd v wind \[m/s\]

VGRDmwl ANL\* max wind level v wind \[m/s\]

VGRDtrp ANL\* tropopause v wind \[m/s\]

VISsfc ANL\* surface Visibility \[m\]

VSTM0_6000m ANL\* 6000-0 m above ground v-component of storm motion
\[m/s\]

VVELprs ANL\* 29\* Pressure vertical velocity \[Pa/s\]

VVELhlev1 ANL\* hybrid level 1 Pressure vertical velocity \[Pa/s\]

VVEL30_0mb ANL\* 30-0 mb above gnd Pressure vertical velocity \[Pa/s\]

VVEL60_30mb ANL\* 60-30 mb above gnd Pressure vertical velocity \[Pa/s\]

VVEL90_60mb ANL\* 90-60 mb above gnd Pressure vertical velocity \[Pa/s\]

VVEL120_90mb ANL\* 120-90 mb above gnd Pressure vertical velocity
\[Pa/s\]

VVEL150_120mb ANL\* 150-120 mb above gnd Pressure vertical velocity
\[Pa/s\]

VVEL180_150mb ANL\* 180-150 mb above gnd Pressure vertical velocity
\[Pa/s\]

VWSHtrp ANL\* tropopause Vertical speed shear \[1/s\]

WCCONVtoa_700mb ACC\* TOA-700 mb Water condensate flux convergence
(vert. int) \[kg/m\^2\]

WCCONVclm ACC\* atmos column Water condensate flux convergence (vert.
int) \[kg/m\^2\]

WCINCtoa_700mb ACC\* TOA-700 mb water condensate added by precip
assimilaition \[kg/m\^2\]

WCINCclm ACC\* atmos column water condensate added by precip
assimilaition \[kg/m\^2\]

WCUFLXtoa_700mb ACC\* TOA-700 mb Water condensate zonal flux (vertical
int) \[kg/m\]

WCUFLXclm ACC\* atmos column Water condensate zonal flux (vertical int)
\[kg/m\]

WCVFLXtoa_700mb ACC\* TOA-700 mb Water condensate meridional flux
(vertical int) \[kg/m\]

WCVFLXclm ACC\* atmos column Water condensate meridional flux (vertical
int) \[kg/m\]

WEASDsfc ANL\* surface Accum. snow \[kg/m\^2\]

WVCONVtoa_700mb ACC\* TOA-700 mb Water vapor flux convergence (vertical
int) \[kg/m\^2\]

WVCONVclm ACC\* atmos column Water vapor flux convergence (vertical int)
\[kg/m\^2\]

WVINCtoa_700mb ACC\* TOA-700 mb water vapor added by precip assimilation
\[kg/m\^2\]

WVINCclm ACC\* atmos column water vapor added by precip assimilation
\[kg/m\^2\]

WVUFLXtoa_700mb ACC\* TOA-700 mb Water vapor zonal flux (vertical
int)\[kg/m\]

WVUFLXclm ACC\* atmos column Water vapor zonal flux (vertical
int)\[kg/m\]

WVVFLXtoa_700mb ACC\* TOA-700 mb Water vapor meridional flux (vertical
int) \[kg/m\]

WVVFLXclm ACC\* atmos column Water vapor meridional flux (vertical int)
\[kg/m\]

Inventory of .b file

DLWRFsfc 3hr\* surface Downward longwave radiation flux \[W/m\^2\]

DSWRFsfc 3hr\* surface Downward shortwave radiation flux \[W/m\^2\]

GFLUXsfc 3hr\* Ground Heat Flux \[W/m\^2\]

LHTFLsfc 3hr\* surface Latent heat flux \[W/m\^2\]

PWATclm 3hr\* atmos column Precipitable water \[kg/m\^2\]

SHTFLsfc 3hr\* surface Sensible heat flux \[W/m\^2\]

ULWRFsfc 3hr\* surface Upward long wave radiation flux \[W/m\^2\]

USWRFsfc 3hr\* surface Upward short wave radiation flux \[W/m\^2\]

WEASDsfc 3hr\* Accum. snow \[kg/m\^2\]

ACC\* = accumulation from a 0-3 hour forecast

ANL\* = analysis

AVE\* = average from a 0-3 hour forecasts

3hr\* = 3 hour forecasts

29\* = analyses available on the 29 pressure levels (hPA): 1000 975 950
925 900 875 850 825 800 775 750 725 700 650 600 550 500 450 400 350 300
275 250 225 200 175 150 125 100

15\* = analyses available on the 15 pressure levels (hPA): 1000 975 950
925 900 875 850 825 800 775 750 725 700 650 600

**3. Start Date:** 1978100100

**4. End Date:** present

**5.** **Coverage:**

a\. Southernmost Latitude: 8N

b\. Northernmost Latitude: 85N

c\. Westernmost Longitude: 150E

d\. Easternmost Longitude: 5W

**6. How to Order Data:**

The cost for this data when accessed through NOMADS system servers or
associated ftp web based services is free. For more information contact:

National Climatic Data Center

151 Patton Avenue

Asheville, NC 28801-5001

Phone 828-271-4800

FAX 828-271-4876

e-mail orders@ncdc.noaa.gov

**7.** **Archiving Data Center:**

National Climatic Data Center

151 Patton Avenue

Asheville, NC 28801-5001

**8. Technical Consultant:**

Perry Shafran

5200 Auth Road, Rm. 207

Camp Springs, MD 20746

Perry.Shafran@noaa.gov

\(301\) 763-8000 x7240

Wesley Ebisuzaki

5200 Auth Road, Rm. 811

Camp Springs, MD 20746

Wesley.Ebisuzaki@noaa.gov

\(301\) 763-8000 x7576

Dusan Jovic

5200 Auth Road, Rm. 207

Camp Springs, MD 20746

Dusan.Jovic@noaa.gov

\(301\) 763-8000 x 7224

**9. Known Uncorrected Problems:**

Gulf of California low level jet is too strong during summer.

Surface wind stress was written with insufficient precision.

**10. Quality Statement:**

> **Disclaimer**

While every effort has been made to ensure that data are accurate and
reliable within the limits of the current state of the art, NOAA cannot
assume liability for any damages caused by any errors or omissions in
the data, nor as a result of the failure of the data to function on a
particular system.

NOAA makes no warranty, expressed or implied, nor does the fact of
distribution constitute such a warranty.

The data used to produce these analyses and forecasts has undergone
automated quality checks.

**11. Essential Companion Data Sets:**

NCEP grib table 131,

ftp://wesley.ncep.noaa.gov/pub/wgrib/nceptab_131

**12. References:**

a\. Mesinger, F., et al, 2004: NCEP North American Regional Reanalysis,
15^th^ Symp. On Global Change and Climate Variations, Seattle, WA, 11-15
Jan 2004.

b\. Shafran, P., J. Woollen, W. Ebisuzaki, W. Shi, Y. Fan, R. W.
Grumbine, M. Fennessy, 2004: Observational Data Used for Assimilation in
the NCEP North American Regional Reanalysis, 20^th^ Intl. Conf. On
Interactive Information Processing Systems for Meteor. Ocean. And
Hydrology. Seattle, WA, 11-15 Jan 2004.

c\. Ebisuzaki, W., J. Alpert, J. Wang, D. Jovic, P. Shafran, 2004: North
American Regional Reanalysis: end user access to large data sets, 20^th^
Intl. Conf. On Interactive Information Processing Systems for Meteor.
Ocean. And Hydrology. Seattle, WA, 11-15 Jan 2004.

d\. Mesinger, F., G. DiMego, E. Kalnay, P. Shafran, W. Ebisuzaki, Y.
Fan, R. Grumbine, W. Higgins, Y. Lin, K. Mitchell, D. Parrish, E.
Rogers, W. Shi, D. Stokes, J. Woolen, 2003: NCEP Regional Reanalysis,
Symp. on Observing and Understanding the Variability of Water in Weather
and Climate, Long Beach, CA, Feb.9-13, 2003.