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

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.

NASA IceBridge LVIS L0 Raw Ranges data for 2012 Greenland are now available from NSIDC. See the IceBridge LVIS L0 Raw Ranges Web page at https://nsidc.org/data/ilvis0 for more information.

NSIDC has published an update to the NASA MEaSUREs program data set MEaSUREs Greenland Ice Velocity: Selected Glacier Site Velocity Maps from InSAR, supplying data for additional locations in Greenland. The data were produced from TerraSAR-X (TSX) image pairs collected from January to May 2009.

NASA IceBridge LVIS L2 Geolocated Surface Elevation Product data for 2011 Antarctica and replacement data for 2010 Greenland 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.

NASA IceBridge LVIS L1B Geolocated Return Energy Waveforms 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 L0 Raw Ranges data for 2011 Antarctica are now available from NSIDC. See the IceBridge LVIS L0 Raw Ranges Web page at https://nsidc.org/data/ilvis0 for more information.

NASA IceBridge LVIS L1B Geolocated Return Energy Waveforms data for 2010 and 2011 Greenland are now available from NSIDC. See the IceBridge LVIS L1B Geolocated Return Energy Waveforms Web page at https://nsidc.org/data/ilvis1bl for more information.

NASA IceBridge LVIS L2 Geolocated Surface Elevation Product data for 2010 and 2011 Greenland 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 is pleased to announce the release of two Antarctic data sets, part of the NASA Making Earth System Data Records for Use in Research Environments (MEaSUREs) program. The MEaSUREs program aims to develop consistent global and continent scale data records related to earth science, or Earth System Data Records (ESDRs).

12,500 Browse Images from 19 June 2002 to 10 September 2002 are unavailable for MODIS/Terra Snow Cover 5-Min L2 Swath 500m (MOD10_L2) and MODIS/Terra Sea Ice Extent 5-Min L2 Swath 1km (MOD29).

As of 06:58 UTC on 04 October 2011, the AMSR-E instrument on board the Aqua satellite stopped producing data due to a problem with the rotation of its antenna.