Projectes de transferència

Recent developments on the Ku-band scatterometer wind geophysical model function (GMF) include a sea surface temperature (SST) dependent term. It has been found that the SST effects on the radar backscatter are wind speed dependent and more pronounced in vertical polarization (VV) than in horizontal polarisation (HH) and at higher incidence angles, and are only relevant at radar wavelenghts smaller tan C-band. The new Ku-band GMF, NSCAT-5, is based on a physical model and Rapidscat radar backscatter measurements, which are only available at two incidence angles, i.e., 49⁰ and 56⁰, for HH and VV beams, respectively. The aim of this study is to verify the NSCAT-5 GMF at other incidence angles, using data from the recently-launched Indian SCATSat-1, which operates at 42.6⁰ (HH) and 49.3⁰ (VV) incidence angle. This is an extension of the already approved short-term AS CDOP-2 study, reference OSI_AVS_17_01. In fact, these two projects were initially planned as a single project, but divided in two to allow the use of the CDOP-2 remaining budget. The extended project objectives well fit within the CDOP-3 framework and associated work packages.