How does Reanalysis handle the surface water budget?
[8/30/96] Reanalysis keeps track of soil wetness at various levels in the soil as well as on the canopy, and the fields themselves are available as a part of the reanalysis dataset. The budget equation is based on precipitation, evaporation, runoff and water flow to lower layers of the soil. The details are in the paper by F. Chen et al., JGR(1996, pp. 7251-7268). There are several people looking into the water budget using reanalysis. The person most closely worked on the equation and evaluation of the budget using reanalysis is Dr. John Roads of Scripps. [From Kanamitsu] • What are the UFLX/VFLX fields? [8/27/96] UFLX/VFLX are the negative of the wind stress at the surface. The conversion to UFLX and VFLX was done because GRIB defines a positive vertical direction which can be different from normal scientific usage. • What is the meaning of a GRIB field with a header section (PDS), but no data values? [7/10/96] According to GRIB convention, when the entire field contains a constant v
