The WindSat sensor aboard the Coriolis satellite has been the first satellite passive microwave sensor measuring the full stokes vector (at 37 GHz). This allows to retrieve the wind speed AND the wind direction over the ice-free ocean surface - the main products of this satellite sensor. In addition the multi-frequency, multi-polarization capability of this sensor (6.8 GHz, 10.7 GHz, 18.7 GHz, 23.8 GHz, 37.0 GHz) allows to further optimize the wind speed retrieval by contemporary measurements of parameters influencing this retrieval such as the sea surface temperature (SST), columnar values of the water vapor and the cloud liquid water content, and the rain rate (similar to, e.g. SSM/I used for the HOAPS data set).
Remote Sensing Systems (REMSS, http://www.remss.com) used WindSat data to compute the surface wind vector at 10 m height above the ocean surface. To do so various channel combinations are used. Here we only offer the all-weather wind speed product which comes at a somewhat coarser spatial resolution but is basically independent of rain effects. We refer to data set web page at REMSS: http://www.remss.com/missions/windsat and the references section for details.
The product offered here is a modified version of the daily WindSat ocean surface wind vector product v07.0.1 obtained from REMSS in early September 2015. The modification applied by ICDC is the conversion from flat binary into netCDF file format, and the computation of the u- and v-wind vector components from wind speed and direction.
Last data set update at ICDC: January 26, 2018.