The NSIDC Polaris Search and Order tool will be retired on 15 February 2017.

Aquarius
NASA's Aquarius Microwave Radiometers & Scatterometer
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Data Announcements
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The Aquarius polar-gridded Version 5 products are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). These data sets include weekly polar
Version 4 Aquarius L2 Swath Single Orbit Soil Moisture Data, and Version 4 Aquarius L3 Gridded 1-Degree Soil Moisture data are now available at the NASA National Snow and Ice Data Center Distributed
Due to a power failure on the Satélite de Aplicaciones Científicas (SAC)-D spacecraft on 08 June 2015, data from NASA’s Aquarius instrument are no longer being produced. For more information on this
Version 3 Aquarius L3 Gridded 1-Degree Soil Moisture data are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains Level-3