Data Announcements

The temporal coverage of the Lagrangian Snow Distributions for Sea-Ice Applications, Version 1 data set, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been extended through 31 July 2021.

Version 4 of the ATLAS/ICESat-2 L3B Annual Land Ice Height (ATL11) and ATLAS/ICESat-2 L3A Ocean Surface Height (ATL12) data sets, will be retired from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) on 23 September 2022.

On Monday August 8, 2022 the SMAP observatory entered a safe-mode which is designed to maintain its essential functions but stops science data acquisition. The Project team is investigating the cause of the anomaly and actively working on resuming operations and continued science data acquisition. The NSIDC DAAC archive will not have science data products during this period. However, generation of the model-based Level-4 products continues until further notice without SMAP observations.

NOAA@NSIDC is pleased to announce the release of the U.S. National Ice Center Arctic and Antarctic Sea Ice Charts in SIGRID-3 Format, Version 1 data set. This data set contains Arctic and Antarctic-wide sea ice charts that have information on sea ice concentration, stage of development (often called ice type), and form. The charts are produced by the U.S. National Ice Center, with a temporal coverage of 2003 to present, and for most of the record the charts are weekly in frequency.

The Sea Ice Trends and Climatologies from SMMR and SSM/I-SSMIS, Version 3 data set, available from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been extended through 31 December 2021. This data set contains sea ice concentrations, ice-covered area, ice persistence, and sea ice extent for the Arctic and Antarctic.

The temporal coverage for the ICESat-2 L4 Monthly Gridded Sea Ice Thickness, Version 2 (IS2SITMOGR4) data set, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been extended

Update: SNPP spacecraft/VIIRS instrument in Safe Mode July 26 - August 9, 2022

The Northern Hemisphere EASE-Grid 2.0 Weekly Snow Cover and Sea Ice Extent, Version 4 data set, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been updated through 31 December 2021.

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.