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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-2 simulations distributed from GES DISC were forced with the meteorological data sets indicated in the right most column of the table. GLDAS-2.0 simulations are solely forced with the Global Meteorological Forcing Dataset from the Princeton University. GLDAS-2.1 simulations are forced with a combination of GDAS, disaggregated daily GPCP precipitation, and AFWA radiation datasets. GLDAS-2.2 simulation is currently forced with the ECMWF data set.
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 | GLDAS-2.2 |
| The Princeton Global Meteorological Forcing Dataset | Bias corrected Reanalysis | Meteorology Forcing | Global | 1.0 x 1.0 degree | 1948 - 2010 | 3-hourly | GLDAS-2.0 |
| Disaggregated CMAP Precipitation | Merged Satellite/Gauge | Mean rain rate | Global | Gaussian (~0.205 degree) | Jan. 2001 - Current | 6-hourly | GLDAS-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 | GLDAS-2.1 |
| 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 |