Data Announcements

NASA IceBridge Radar L3 Tomographic Thickness Error data are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains Level-3 tomographic thickness error measurements derived from data captured by the Center for Remote Sensing of Ice Sheets (CReSIS) Multichannel Coherent Radar Depth Sounder (MCoRDS) instrument over areas including Greenland and Antarctica. See the Tomographic Thickness Error data catalog page for more information.;

The MEaSUREs Greenland Surface Melt Daily 25km 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, part of the NASA Making Earth System Data Records for Use in Research Environments (MEaSUREs) program, offers users a 25 km daily record of surface/near-surface melting on the Greenland Ice Sheet from 2 January 1979 to 31 December 2012. To access the data and documentation, visit the data set Web page at https://nsidc.org/data/nsidc-0533.

NASA IceBridge MCoRDS L1B Geolocated Radar Echo Strength Profiles data for 2013 Antarctica are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains radar echograms taken from the Center for Remote Sensing of Ice Sheets (CReSIS) ultra Multichannel Coherent Radar Depth Sounder (MCoRDS) over land and sea ice in the Arctic and Antarctic. See the MCoRDS Radar L1B data catalog page for more information.

Lake Neusiedl (lake code NEUS) on the Austrian-Hungarian border has been added to the Global Lake and River Ice Phenology Database with data spanning 1931 through 2012. The Global Lake and River Ice Phenology Database contains freeze and thaw dates and other descriptive ice-cover data for 865 lakes and rivers around the world. This data can be accessed from the Global Lake and River Ice Phenology Database search interface.

NASA IceBridge MCoRDS Level-2 Ice Thickness data for 2012 and 2013 Antarctica are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains depth sounder measurements of elevation, surface, bottom, and thickness for Greenland and Antarctica taken from the Multichannel Coherent Radar Depth Sounder (MCoRDS). See the IceBridge MCoRDS L2 Ice Thickness catalog page for more information.

The Antarctic Glaciological Data Center (AGDC) at NSIDC is pleased to announce the release of a new data set, Synthesis of Thwaites Glacier Dynamics: Diagnostic and Prognostic Sensitivity Studies of a West Antarctic Outlet System. This data set consists of experimental output from a higher-order finite-element model that was utilized in conjunction with existing data sets to isolate essential physical processes affecting Thwaites Glacier in the Amundsen Sea Embayment (ASE) of West Antarctica.

NASA IceBridge MCoRDS L1B Geolocated Radar Echo Strength Profiles, Version 2 data for 2012 Antarctica and 2013 Arctic are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains radar echograms taken from the Center for Remote Sensing of Ice Sheets (CReSIS) ultra Multichannel Coherent Radar Depth Sounder (MCoRDS) over land and sea ice in the Arctic and Antarctic. Version 2 data are provided in netCDF format.

From the early 1960s through the mid 1980s, the U.S. Naval Oceanographic Office and later the Naval Research Laboratory conducted approximately nine missions per year over arctic sea ice in order to improve techniques for ice observation, refine forecasting techniques, collect data for military Arctic operations, and support U.S. Navy submarines during under-ice operations. Aerial photography from these flights was preserved on film.

The International Ice Patrol (IIP) Iceberg Sightings Database has been updated through 2013 and files have been reformatted for ease of use. The IIP has been collecting information on iceberg activity in the North Atlantic since 1913. This database contains the data from these sightings starting in 1960. The IIP data files include latitude and longitude of sighted icebergs, coded iceberg size and shape class, and date and time of the sighting.

NASA IceBridge Ku-Band Radar L1B Geolocated Radar Echo Strength Profiles, Version 2 data for 2012 Antarctica and 2013 Arctic are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains radar echograms taken from the Center for Remote Sensing of Ice Sheets (CReSIS) ku-band radar over land and sea ice in the Arctic and Antarctic. Version 2 data are provided in netCDF format. See the Ku-Band Radar L1B data catalog page for more information.

The Antarctic Glaciological Data Center (AGDC) at NSIDC is pleased to announce the release of a new data set, Radar Studies of Subglacial Lake Whillans and the Whillans Ice Stream Grounding Zone. This data set includes ground-based, gridded, ice-penetrating radar thickness and basal reflection power, along with GPS coordinates, for two areas of Whillans Ice Stream: Subglacial Lake Whillans and the Whillans Ice Stream grounding zone.

ICESat/GLAS Altimetry Release-34 HDF5 data 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.

Reprocessed NASA ICESat/GLAS GLAH01 HDF5 data are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). GLAH01 reprocessing was conducted to correct the format of the d_4nsBgMean parameter changing it from counts to volts. See the ICESat/GLAS data collection for more information. DOI:10.5067/ICESAT/GLAS/DATA101.

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.

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 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.