Tropical Cyclone Wind Speeds from WindSat, AMSR and SMAP: Algorithm Development and Testing

The measurement of ocean surface wind speeds in precipitation from satellite microwave radiometers is a challenging task. Rain attenuates the signal that emitted surface. Moreover, rain and signals are very similar, which makes it difficult to distinguish rain. contamination can be mitigated for operate simultaneously at C-band X-band channels, such as WindSat, AMSR-E AMSR2. basic principle use combinations between channels sensitive speed but relatively insensitive Based on this principle, we have developed algorithms retrieving WindSat AMSR sensors. These statistical regressions trained specifically under tropical cyclone conditions. We lay out steps algorithm development, training, testing. major source training provided by SMAP L-band radiometer, been proven provide reliable strong storms not affected show perform well where standard passive retrievals fail. examine possibility extending C/X-band X/K-band discuss how broadened conditions global winds retrievals.