Comments:         chen-at-csr.utexas.edu   Web Curator: Jianli Chen   Last updated: Dec. 28, 2011

Data Resources (Updated: Dec. 28, 2011) Parameters Sources Information Global Mass Change From GRACE (Release 04) GRACE (Gravity Recovery And Climate Experiment) Time Span: Apr. 2002 - Sept. 2011 Sampling Rate: Monthly, 109 Solutions CSR RL04 (GSM only, GAC not restored) Grid: 1 x 1 Degree Grid Decorrelation + 500 km Gaussian Smoothing Truncation at degree 60 Global Mass Change From GRACE (Release 01) GRACE (Gravity Recovery And Climate Experiment) Time Span: Apr/May 2002 - Jul 2004 Sampling Rate: Monthly, 22 Solutions CSR RL01 Unconstrained Grid: 1 x 1 Degree Grid Gaussian Smoothing: 600, 800, 1000 km Truncation at degree 60, No C20 GLDAS Monthly Water Storage (New!) NASA Global Land Data Assimilation System Time Span: Jan. 1979 - Aug. 2011 Sampling Rate: Monthly Grid: 1 x 1 Degree Units: mm of water height GLDAS Daily Water Storage NASA Global Land Data Assimilation System Time Span: Jan. 1, 2002 - May 31, 2007 Sampling Rate: Daily Grid: 1 x 1 Degree Units: mm of water height NOAA LadWorld Monthly Water Storage NOAA LadWorld (Fraser) Time Span: Jan., 1980 - Nov., 2006 Sampling Rate: Monthly Grid: 1 x 1 Degree Units: mm of water height CPC Monthly Water Storage CPC Land Data Assimilation System Time Span: Jan. 1948 - Dec. 2007 Sampling Rate: Monthly Grid: 1 x 1 Degree NCEP Daily Water Storage NCEP/NCAR Reanalysis Soil Moisture and Snow Time Span: Jan. 1979 - Dec. 2004 Sampling Rate: Daily Grid: Gaussian (T62), ~1.904 x 1.875 Degree ECMWF Daily Water Storage ECMWF Reanalysis Soil Moisture and Snow Time Span: 1979 - 1993 Sampling Rate: Daily Grid: 2.5 x 2.5 Degree Water Storage NCEP/NCAR Climate Data Assimilation Syatem I (CDAS-1) soil moisture and snow Time Span: 1993 - 1998 Sampling Rate: Monthly Grid: 1 x 1 degree Water Flux NCEP/NCAR Climate Data Assimilation Syatem I (CDAS-1) soil moisture and snow Time Span: 1993 - 1998 Sampling Rate: Monthly Grid: 1 x 1 degree Global grids of loading derived from the GLDAS water storage model (from Dr. Tonie M. van Dam). Hydrological loading service provided by NASA GSFC VLBI group. GFZ Operational AAM (plus OAM & HAM) Products! Daily hydrological excitations of polar motion and LOD from NCEP/NCAR Reanalysis (1948-2008)! Water storage and flux changes of global major basins !!! (Underconstruction) List of global major artificial reservoirs ! (by courtesy of Dr. Ben F. Chao)