NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC)

The NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) has been notified of erroneous data contained in the sea ice concentration field of the Sea Ice Nimbus-7 SMMR and DMSP SSM/I-SSMIS Passive Microwave Data for the date of 14 September 1984. A geolocation error in the source data resulted in the addition of several hundred thousand square kilometers of erroneous ice for both the Arctic and Antarctic records.

ICESat/GLAS Altimetry Release-34 binary format data for Laser 3H, 3I, 3J, 3K, and 2D campaigns are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) for products GLA05, GLA06, and GLA12-15.

See the ICESat/GLAS data collection for more information.

The NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) is pleased to announce that the Sea Ice Trends and Climatologies from Scanning Multichannel Microwave Radiometer (SMMR) and Special Sensor Microwave Imager/Sounder (SSMIS) have been updated through 31 December 2013 for all products of the data set. Please note that the directory structure for the data has changed since the last update.

The NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) has added new data for 2012 to the MEaSUREs Greenland Ice Velocity: Selected Glacier Site Velocity Maps from InSAR data set. Part of NASA's Making Earth System Data Records for Use in Research Environments (MEaSUREs) Program, these data now span January 2009 to December 2012.

Visit the MEaSUREs Greenland Ice Velocity: Selected Glacier Site Velocity Maps from InSAR catalog page to view complete documentation and obtain the data.

The NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) has released Version 3 of the MEaSUREs Global Record of Daily Landscape Freeze/Thaw Status data set. This release, part of NASA's Making Earth System Data Records for Use in Research Environments (MEaSUREs) Program, extends the SMMR-SSM/I-SSMIS freeze/thaw record through 2012, corrects land/ocean mask and freeze/thaw misclassification errors over ocean dominated grid cells, and applies a revised methodology to produce data annual quality maps.

NASA ICESat/GLAS Altimetry Release-34 binary format data for Laser 3E, 3F, and 3G campaigns are now available for products GLA05, GLA06, and GLA12-15. 

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 the Aquarius L3 NRCS, Aquarius L3 SSS, and Aquarius L3 TB data set landing pages.

NASA ICESat/GLAS Altimetry Release-34 binary format data for Laser 3B, 3C, and 3D campaigns are now available for products GLA05, GLA06, and GLA12-15. 

NASA IceBridge Snow Radar L1B Geolocated Radar Echo Strength Profiles Version 2 data in netCDF format for 2013 Arctic and 2012 Antarctica are now available from NSIDC. See the Snow Radar L1B data catalog page for more information.

NASA ICESat/GLAS Altimetry Release-34 binary format data for Laser 2C and 3A campaigns are now available for products GLA05, GLA06, and GLA12-15. 

The AMSR-E Science Investigator-led Processing System (SIPS) has updated the following AMSR-E sea ice data sets to Version 3:

NASA IceBridge Accumulation Radar L1B Geolocated Radar Echo Strength Profiles data for 2013 Arctic are now available from NSIDC. See the Accumulation Radar L1B data catalog page for more information.

NSIDC is pleased to announce that the "DMSP SSM/I-SSMIS Pathfinder Daily EASE-Grid Brightness Temperatures" data set has been updated through 31 May 2014 for all projections (North, South and Global). For more information or to access these data, please visit the data set landing page.

NASA IceBridge Photon Counting Lidar L1B Subset Geolocated Photon Elevations data for 2011 and 2012 Antarctica are now available from NSIDC. See the Photon Counting Lidar L1B Elevations catalog page for more information.

NASA ICESat/GLAS Altimetry Release-34 binary format data for Laser 1A, 1B, 2A, and 2B campaigns are now available for products GLA05, GLA06, and GLA12-15. 

NSIDC has a new Arctic sea ice data set from NASA's Making Earth System Data Records for Use in Research Environments (MEaSUREs) program: MEaSUREs Arctic Sea Ice Characterization 25 km EASE-Grid 2.0.

This data set, derived from passive microwave brightness temperatures, offers users daily Arctic sea ice locations, sea ice age, day of melt onset, and status of melt onset for the years 1979 through 2012. The data are gridded in the 25 km Equal-Area Scalable Earth Grid (EASE-Grid) 2.0 and provided as netCDF files.

NSIDC is pleased to announce that the "DMSP SSM/I-SSMIS Daily Polar Gridded Brightness Temperatures" data set has been updated through 31 May 2014. For more information and to access the new data, see the documentation for this data set.

NASA IceBridge Sander AIRGrav L1B Geolocated Free Air Gravity Anomalies data for 2013 Antarctica, and replacement data for all previous campaigns, are now available from NSIDC. See the IceBridge Sander AIRGrav L1B catalog page for more information.

NASA IceBridge CMG GT-1A Gravimeter L2 Geolocated Free Air Gravity Disturbances data for 2012 Antarctica are now available from NSIDC. See the IceBridge CMG GT-1A Gravimeter L2 catalog page for more information.

NASA IceBridge BGM-3 Gravimeter L1B Time-Tagged Accelerations data for pre-IceBridge 2008 campaigns are now available from NSIDC. See the IceBridge BGM-3 Gravimeter L1B catalog page for more information.