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NSIDC Scientific Expeditions
Scientists blog from Antarctica and provide a glimpse of what it's like to do research in the field. 
What's hot in the news around climate and sea ice and what are scientists talking about now? 
THE NSIDC Polaris Search and Order tool will be retired on 15 February 2017. Please contact NSIDC User Services via email: nsidc@nsidc.org with questions.
Data Announcements: Aquarius 
Version 5 Aquarius Polar-Gridded Data Now Available at NSIDC DAAC
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-gridded… Read more »
New Version 4 Aquarius Soil Moisture Data, and New Soil Moisture Climatologies
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… Read more »
Aquarius/SAC-D Mission Ends
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… Read more »
New Version 3 Aquarius Level-3 Soil Moisture Data
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… Read more »
New Version 3 Aquarius Level-2 Soil Moisture Data
Version 3 Aquarius L2 Swath Single Orbit Soil Moisture data are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data… Read more »
New Aquarius L3 Weekly Polar-Gridded NRCS, SSS, and TB Data
NASA Aquarius level-3 weekly polar-gridded Normalized Radar Cross Section, Sea Surface Salinity, and Brightness Temperature data products are now available from NSIDC. For documentation, and to access the data, see… Read more »
NSIDC Web Site and FTP Server Down for System Maintenance
From 4:30 p.m. Wednesday, June 04 until noon Friday, June 06 (USA Mountain Time), our Web site and FTP server will be unavailable due to system maintenance. We apologize for… Read more »
New Aquarius L2 and L3 Soil Moisture Data
NASA Aquarius Level-2 and Level-3 Soil Moisture data are now available from NSIDC. For documentation, and to access the data, see the Aquarius Soil Moisture data sets page.
