GEWEX WEBS "Initiative 1" (see GAME Letter No. 5) Agreement at meetings of Sep. 2002, June 2003 and Sep. 2003 (Note: "Initiative 1" is Masuda's terminology, not an official one.) Budgets (terms) by--------------------------------------------Budgets (terms) by Global, long-term data sets --> the same target <------------ CSE data sets (comparison) Size of target area: larger than 250 km, typically 1000 km Time frame: parts of July 1996 - June 2001 Time resolution: monthly (shorter interval for initiatives 2,...) Global, long-term data sets mainly to be used: Precipitation: Global Precipitation Climatology Project 1-degree daily 1997-; 2.5-degree monthly 1979- Radiation: International Satellite Cloud Climatology Project-derived "FD" Fluxes at top and surface, 2.5 degree, 3-hourly 1983(Jul)-2001(Jun) Water vapor: NASA water VApor Project 1 degree, daily 1988 - 1999 Energy and water vapor transport in the atmosphere: NCEP Reanalysis 2 (alternative: ECMWF 40-year, NCEP/NCAR) 192 x 94 (ca. 2 degree) Gaussian grid, 6-hourly 1979-