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Data Announcements

News and tips for data users

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The Near-Real-Time DMSP SSM/I-SSMIS Pathfinder Daily EASE-Grid Brightness Temperatures, Version 2 data set will be retired on 31 August 2022.
The ICESat-2 L4 Along-Track Sea Ice Thickness, Version 1 (IS2SITDAT4) data set, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been updated to include data for the period from 1 September 2021 to 31 March 2022.
The MEaSUREs Greenland Ice Velocity: Selected Glacier Site Single-Pair Velocity Maps from Optical Images, Version 1 data set is now available
The IceBridge Mission Flight Reports, Version 1 data set, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been updated to include flight reports from the 2019 summer Arctic campaign.
Version 3 of the ATLAS/ICESat-2 L3B Weekly Gridded Atmosphere (ATL16) and ATLAS/ICESat-2 L3B Monthly Gridded Atmosphere (ATL17) data sets, will be retired from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) on 18 August 2022. After this date, access to the data will no longer be available, but the data set documentation will remain available for future reference. Version 4 of each data set was released on 21 February 2022.
The ATLAS/ICESat-2 L3B Slope-Corrected Land Ice Height Time Series (ATL11), Version 5 data set, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been updated to include data from cycle 14 of the ATLAS/ICESat-2 mission. This data set provides time series of land-ice surface heights derived from the ICESat-2 ATL06 Land Ice Height product.
NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) is pleased to announce its participation in NASA’s Earthdata Forum. Earthdata Forum provides a central online location where data users can interact with subject-matter experts from NASA’s Distributed Active Archive Centers (DAACs) to discuss data applications and research needs and get answers to specific questions about accessing, viewing, and manipulating NASA Earth observation data.
The DMSP SSM/I-SSMIS Daily Polar Gridded Brightness Temperatures, Version 6 data set, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been updated through 5 June 2022. This data set provides daily gridded brightness temperatures derived from passive microwave sensors and distributed in a polar stereographic projection.
The MEaSUREs Greenland Image Mosaics from Sentinel-1A and -1B, Version 4 data set, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been updated through 30 March 2022. Due to the failure of Sentinel-1B on 23 December 2021, data acquired after 25 December 2021 has a temporal resolution of 12 days.
The MEaSUREs Greenland Ice Mapping Project (GrIMP) Digital Elevation Model from GeoEye and WorldView Imagery, Version 2 data set, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been updated to Version 2.
The temporal coverage of the Daily 4 km Gridded SWE and Snow Depth from Assimilated In-Situ and Modeled Data over the Conterminous US, Version 1 data set, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been extended to include the 2021 water year.
The CryoSat-2 Level-1B Waveforms, Sea Ice Elevation, and Surface Roughness, Version 1 data set, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), is being updated to complete the season through 15 May 2022. Data are currently available through 21 April 2022, and all remaining data will be released as they are processed. This data set contains surface elevations from retracked CryoSat-2 waveforms, as well as model fitting parameters used to retrack the waveform.
The EASE-Grid Sea Ice Age, Version 4 data set, available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) has been updated through 31 December 2021. This data set provides weekly estimates of sea ice age for the Arctic derived from remotely sensed sea ice motion and sea ice extent. Data set DOI: https://doi.org/10.5067/UTAV7490FEPB
The Polar Pathfinder Daily 25 km EASE-Grid Sea Ice Motion Vectors, Version 4 data set, available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) has been updated through 31 December 2021. This data set provides daily and weekly sea ice motion vectors including browse images of the weekly data. The source data used to generate the daily and weekly ice motion estimates are derived from AVHRR, AMSRE, SMMR, SSMI, and SSMI/S sensors; IABP buoys; and NCEP/NCAR Reanalysis forecasts.
The ICESat-2 L4 Grounding Zone for Antarctic Ice Shelves, Version 1 data set is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC).
The ATLAS/ICESat-2 ATL03 Ancillary Masks, Version 1 is an ancillary ICESat-2 data set that contains four static surface masks (land ice, sea ice, land, and ocean) provided to reduce the volume of data required to be processed for each surface-specific along-track data product. For example, the land ice surface mask directs the ATL06 land ice algorithm to consider data from only those areas of interest to the land ice community.
The LVIS Facility L1B Geolocated Return Energy Waveforms, Version 1 and LVIS Facility L2 Geolocated Surface Elevation and Canopy Height Product, Version 1 have been updated at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) to now include data from flights held in July and August 2021.
The Bootstrap Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS, Version 3 data set, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been updated to include new data through 31 December 2021. This data set consists of daily and monthly sea ice concentrations derived from brightness temperature measurements. This data set is available for the north and south polar regions, with a temporal coverage extending back to 1 November 1978.
The MEaSUREs Annual Greenland Outlet Glacier Terminus Positions from SAR Mosaics, Version 2 data set, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been updated. New data for glaciers in the northwest and central west Greenland have been added so the data set now spans the winter seasons 1972-1973 through 2020-2021.
Older versions of multiple ATLAS/ICESat-2 data sets will be retired on 13 June 2022. After this date, access to the data will no longer be available, but the data set documentation will remain available for future reference at the following locations: ATLAS/ICESat-2 L1B Converted Telemetry Data (ATL02), Version 4 https://nsidc.org/data/atl02/versions/4 Data authors: Martino, A. J., M. R. Bock, C. Gosmeyer, C. Field, T. A. Neumann, D. Hancock, R. L. Jones III, P. W. Dabney, C. E. Webb, and J.