Does reanalysis assimilate the recent broad swath scatterometer data, such as from the Quikscat satellite?
[11/29/2001] No. The test results of introducing SSM/I wind data into reanalysis assimilation has caused a large shift in the “climatological” surface winds. After much debate, the decision was made not to use the SSM/I data. • How is sea surface temperature field used in Reanalysis processing?[6/23/2000] GISST v2.2 from the UK Met Office was used prior to 1982 and Reynolds SST for later years. GISST was a monthly data set which was interpolated to daily values. The Reynolds SST was a weekly SST analyses interpolated to daily values. The CDAS currently runs using a daily SST analyses using a 6 or 7 day sliding window for it’s input data. • What does NCEP use for the gravity constant in Reanalysis processing?[5/5/2000] In nearly all processing, NCEP uses 9.8 exactly as the gravity constant. The only exceptions are that a value of 9.81 is used to compute mass weight variables on isentropic surfaces and to compute pressure levels of the isentropic surfaces. • Is the field called geopotent
