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

NASA IceBridge Sander AIRGrav L4 Bathymetry data containing bathymetry of Arctic fjords and Antarctic ice shelves are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). See the Sander AIRGrav L4 Bathymetry data catalog page for more information.

The NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) has been informed that our data provider, MODAPS, identified corrupt files that may have impacted previously forward processed data for all MODIS snow and sea ice products. NSIDC recommends that MODIS snow and sea ice data users replace the following files:

MODIS Terra
Files from Day of Year (DOY) 256 to DOY 271, downloaded before 6 October 2014. Files from DOY 277 to 282, downloaded before 11 October 2014.

The Northern Hemisphere EASE-Grid 2.0 Weekly Snow Cover and Sea Ice Extent (Version 4) has been updated through 29 June 2014. This product provides snow cover at weekly intervals beginning 03 October 1966, as well as combined snow cover and sea ice extent at weekly intervals beginning 23 October 1978. Designed to facilitate the study of Northern Hemisphere seasonal fluctuations of snow cover and sea ice extent, this product also includes monthly climatologies describing average extent, probability of occurrence, and variance.

NSIDC is experiencing delays receiving some MODIS data sets from our data provider. We apologize for the inconvenience. Please contact User Services if you have questions.

Corrected IceBridge Accumulation Radar L1B Geolocated Radar Echo Strength Profiles, Version 2 data are now available from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). The data set update corrects a time stamp error by adding 1 second to the GPS time. See the IceBridge Accumulation Radar Level-1B catalog page for documentation and data.

Corrected IceBridge Snow Radar L1B Geolocated Radar Echo Strength Profiles, Version 2 data are now available from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). The data set update corrects a time stamp error by adding 1 second to the GPS time. See the IceBridge Snow Radar Level-1B catalog page for documentation and data.

The MEaSUREs Northern Hemisphere Terrestrial Snow Cover Extent Daily 25 km EASE-Grid 2.0 data set is now available from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set offers users 25 km Northern Hemisphere snow cover extent represented by four different variables. Three of the snow cover variables are derived from the Interactive Multisensor Snow and Ice Mapping System, MODIS Cloud Gap Filled Snow Cover, and passive microwave brightness temperatures, respectively.

NASA IceBridge Radar Level-3 Tomographic Ice Thickness data are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). See the Tomographic Ice Thickness data catalog page for more information.

The AMSR-E Science Investigator-led Processing System (SIPS) has completed reprocessing of the AMSR-E sea ice data sets to Version 3. The following data sets are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC).

NASA IceBridge Scintrex CS-3 Cesium Magnetometer L1B Geolocated Magnetic Anomalies data for 2013 Antarctica are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). See the Cesium Magnetometer L1B data catalog page for more information.

NASA IceBridge LVIS L2 Geolocated Surface Elevation Product data for 2013 Arctic are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). See the LVIS L2 data catalog page for more information.

NASA IceBridge POS/AV L1B Corrected Position and Attitude Data for 2014 Arctic are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). See the POS/AV L1B data catalog page for more information.

NASA IceBridge LVIS L1B Geolocated Return Energy Waveforms data for 2013 Arctic is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). See the LVIS L1B data catalog page for more information.

NASA IceBridge DMS L0 Raw Imagery for 2014 Arctic is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). See the Digital Mapping System L0 data catalog page for more information.

ICESat/GLAS Altimetry Release-34 binary format data for Laser 2E and 2F 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) 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.

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.

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.