WindSat Global Surface Soil Moisture Data Set Search
  The WindSat instrument is a spaceborne polarimetric microwave radiometer launched by Naval Research Laboratory (NRL) under the sponsorship of the U.S. Navy and the National Polar-orbiting Operational Environmental Satellite System (NPOESS) in 2003 (Gaiser et al., 2004). The first release of WindSat land data products includes the daily global data of the surface soil moisture, land surface temperature, land classification and the observation time. The vegetation water content data will be included in the second release following completion of the preliminary validation. Meanwhile the vegetation data is available through special request for validation purpose. The goal of this data release is to explore the utility of passive microwave land data products, encourage collaborations among data developers and data users, expand the ongoing WindSat data evaluation and improvements, and seek user feedbacks for the risk reductions of the future NPOESS MIS (Microwave Imager/Sounder) mission.  
Learn More About Windsat Dataset Version 2.1, Version 2.3, Related paper:WindSat Global Soil Moisture Retrieval and Validation
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