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

Brightness Temperature data products from the Advanced Microwave Scanning Radiometer 2 (AMSR2) onboard the Global Change Observation Mission 1st – Water (GCOM-W1) satellite have recently been released by the Japan Aerospace Exploration Agency (JAXA). For additional information and access to the data, visit the GCOM-W JAXA EROC.

The NASA IceBridge Sea Ice Freeboard, Snow Depth, and Thickness Quick Look 2013 Arctic evaluation product data are now available from NSIDC. See the NASA IceBridge Sea Ice Freeboard, Snow Depth, and Thickness Quick Look data set landing page for more information.

NASA IceBridge ATM L1B Qfit Elevation and Return Strength data for 2012 Antarctica are now available from NSIDC. See the IceBridge ATM L1B Qfit Elevation and Return Strength data set landing page at for more information.

NASA IceBridge ZLS Dynamic Gravity Meter Time-Registered L1B Vertical Accelerations replacement data for 2011 Antarctica are now available from NSIDC. See the NASA IceBridge ZLS Dynamic Gravity Meter Time-Registered L1B Vertical Accelerations data set landing page for more information.

NASA IceBridge Riegl Laser Altimeter L1B Time-Tagged Laser Ranges data for 2012 Antarctica, and 2009, 2010, and 2011 Antarctica replacement data, are now available from NSIDC. See the IceBridge Riegl Laser Altimeter L1B Time-Tagged Laser Ranges data set landing page for more information.

NASA IceBridge GPS L1B Time-Tagged Real-Time Position and Attitude Solution Antarctica 2009 and 2012 data, and 2010 and 2011 replacement data, are now available from NSIDC. See the IceBridge GPS L1B Time-Tagged Real-Time Position and Attitude Solution data set landing page for more information.

NASA IceBridge GPS/IMU L1B Primary Position and Attitude Solution Antarctica 2009 and 2012 data, and 2010 and 2011 replacement data, are now available from NSIDC. See the NASA IceBridge GPS/IMU L1B Primary Position and Attitude Solution data set landing page for more information.

NASA IceBridge Paroscientific S-1000 L1B Pressure Altimeter Time-Tagged Air Pressure data for 2012 Antarctica and 2009, 2010, and 2011 replacement data are now available from NSIDC. See the IceBridge Paroscientific S-1000 L1B Pressure Altimeter Time-Tagged Air Pressure data set landing page for more information.

NASA IceBridge BGM-3 Gravimeter L1B Time-Tagged Accelerations replacement data for 2009, 2010, and 2011 Antarctica are now available from NSIDC. See the IceBridge BGM-3 Gravimeter L1B Time-Tagged Accelerations data set landing page for more information.

NASA IceBridge Geometrics 823A Cesium Magnetometer L1B Time-Tagged Magnetic Field 2012 Antarctica data and 2009, 2010, and 2011 replacement data are now available from NSIDC. See the IceBridge Geometrics 823A Cesium Magnetometer L1B Time-Tagged Magnetic Field data set landing page for more information.

NASA IceBridge KT19 IR Surface Temperature data for 2011 and 2012 Antarctica sea ice and land ice are now available from NSIDC. See the IceBridge KT19 IR Surface Temperature data set landing page for more information.

NASA IceBridge NSERC L1B Geolocated Meteorologic and Surface Temperature Data for 2012 Antarctica are now available from NSIDC. See the IceBridge NSERC L1B Geolocated Meteorologic and Surface Temperature data set landing page for more information.

The ICESat/GLAS Project Science Team announced that a correction to ICESat surface elevation data products is necessary due to an error in the range determination from transmit-pulse reference selection (centroid vs. Gaussian, G-C). The following products are affected by this finding: GLA06 (global elevation), GLA12 (ice sheet), GLA13 (sea ice), and GLA15 (ocean). GLA14 users who use the range increment for the alternative Gaussian-fitted peaks may want to also use the correction.

NSIDC has released an updated version (Version 2) of the MEaSUREs Global Record of Daily Landscape Freeze/Thaw Status data set led by Principal Investigator, John Kimball, as a part of the NASA Making Earth System Data Records for Use in Research Environments (MEaSUREs) program. The updated version features an extended freeze/thaw record spanning 1979 to 2010, derived from both the Scanning Multichannel Microwave Radiometer (SMMR) and Special Sensor Microwave/Imager (SSM/I) instruments.

ICESat/GLAS Altimetry Release-33 HDF5 format data products are now available at NSIDC. 

NASA IceBridge LVIS L1B Geolocated Return Energy Waveforms data for 2012 Arctic and replacement data for 2011 Antarctica are now available from NSIDC. See the IceBridge LVIS L1B Geolocated Return Energy Waveforms Web page at https://nsidc.org/data/ilvis1b for more information.

NASA IceBridge LVIS L2 Geolocated Surface Elevation Product 2012 Arctic data are now available from NSIDC. See the IceBridge LVIS L2 Geolocated Surface Elevation Product Web page at https://nsidc.org/data/ilvis2 for more information.

NSIDC has been notified of an error in AMSR-E sea ice data products that caused valid data in the Southern Hemisphere to be obscured by a land mask. The products and algorithms affected by this error are:

pdates are complete for following AMSR-E data products:

• AMSR-E/AQUA Daily L3 6.25 km 89GHz Brightness Temperature Polar Grids
• AMSR-E/Aqua Daily L3 12.5 km Tb, Sea Ice Concentration, and Snow Depth Polar Grids
• AMSR-E/AQUA Daily L3 25 km Tb, Sea Ice Temperature, & Sea Ice Conc. Polar Grids

Algorithm updated to: Validated 14 – Stage 1

The Japan Aerospace Exploration Agency (JAXA) has completed reprocessing of the AMSR-E/Aqua L1A Raw Observation Counts data set to Version 3. These Version 3 data are now available from the beginning of the AMSR-E mission through 04 October 2011, when the AMSR-E sensor stopped operating. The new version includes improved geometric accuracy and a switch to a new HDF version, from 4.2r1 to 4.2r4.