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GLDAS Forcing Data

Table below summarizes attributes of the meteorological forcing data used to drive the land surface models and links to original data sources.

The GLDAS-1 simulations distributed from GES DISC were forced with a combination of GDAS, disaggregated CMAP, and AFWA radiation datasets listed below. The GLDAS-2 simulations also distributed from GES DISC were forced with the Global Meteorological Forcing Dataset from the Princeton University. The datasets used in the GLDAS products are indicated in the right most column of the table.

GLDAS Forcing Datasets Summary

DATASET NAME DATASET TYPE PARAMETERS DOMAIN SPATIAL RESOLUTION TIME RECORD TEMPORAL RESOLUTION GLDAS PRODUCT
NCEP's Global Data Assimilation System (GDAS) Model Derived Meteorology Forcing Global Gaussian (~0.205 degree) Jan. 2000 - Current 3-hourly GLDAS-1, GLDAS-2.1
NASA's Goddard EOS Data Assimilation System (GEOS) Model Derived Meteorology Forcing Global 0.67 x 0.5 degree Dec. 2000 - Current 3-hourly  
The European Centre for Medium Range Weather Forecasting (ECMWF) Model Derived Meteorology Forcing Global Gaussian (~0.205 degree) Sept. 2001 - Current 3-hourly  
The Princeton Global Meteorological Forcing Dataset Bias corrected Reanalysis Meteorology Forcing Global 1.0 x 1.0 degree 1948 - 2010 3-hourly GLDAS-2
Disaggregated CMAP Precipitation Merged Satellite/Gauge Mean rain rate Global Gaussian (~0.205 degree) Jan. 2001 - Current 6-hourly GLDAS-1, GLDAS-2.1
Air Force Weather Agency (AFWA) Radiation Satellite Observed Shortwave, Longwave (cloud heights) Global 0.25 x 0.25 degree March 2001 - Current hourly GLDAS-1, GLDAS-2.1
Global Precipitation Climatology Project (GPCP) Merged Satellite/Gauge Mean rain rate Global 1.0 x 1.0 degree Oct. 1 1996 - Current daily  
NOAA/CPC CMORPH Precipitation Satellite Observed Mean rain rate 60N - 60S 8 km Dec. 2002 - Current 30 minute  
NASA/GSFC TRMM 3B42(V7) Precipitation Calibrated satellite estimates Mean rain rate 60N - 60S 0.25 x 0.25 degree Jan. 1998 - Current 3-hourly  
NASA/GSFC TRMM 3B42RT Realtime Huffman Precipitation Satellite Observed Mean rain rate 60N - 60S 0.25 x 0.25 degree Feb. 2002 - Current 3-hourly  
Naval Research Laboratory Precipitation Satellite Observed Mean rain rate 60N - 60S 0.25 x 0.25 degree Jan. 2001 - Current 6-hourly  
PERSIANN Precipitation Satellite Observed Mean rain rate 60N - 60S 0.25 x 0.25 degree Jan. 2002 - Current hourly