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

Access to the Calibrated Enhanced-Resolution Passive Microwave Daily EASE-Grid 2.0 Brightness Temperature ESDR (NSIDC-0630), Version 2 data set in the legacy, on-premises archive at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) will be retired on 11 November 2025. The NASA Earthdata Cloud is now the primary data archive for NSIDC-0630 V2 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 April 2025. 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, available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been updated. New data have been added, and the temporal coverage now spans from 01 January 2015 to 25 April 2025. This data set is part of the NASA Making Earth System Data Records for Use in Research Environments (MEaSUREs) program.

The  SnowEx23 GIS References and Field Maps, Version 1 data set is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains geolocation information for ground-based and airborne measurements collected in Alaska, USA as part of the NASA SnowEx 2023 campaign. Temporal coverage spans from 25 October 2021 to 30 November 2023.

Versions 7 of ATLAS/ICESat-2 L2A Normalized Relative Backscatter Profiles (ATL04), ATLAS/ICESat-2 L3A Land Ice Height (ATL06), ATLAS/ICESat-2 L3A Land and Vegetation Height (ATL08), ATLAS/ICESat-2 L3A Calibrated Backscatter Profiles and Atmospheric Layer Characteristics (ATL09), and ATLAS/ICESat-2 L3A Along Track Inland Surface W

Isolated portions of ICESat-2 Release 7 data are affected by gaps in instrument pointing estimates and degraded orbit/pointing solutions around spacecraft maneuvers. These issues can cause large errors in photon geolocation and heights. Please refer to the “Rel007 Pointing Data Gaps” sheet in the ICESat-2 Technical References Table, Version 4 for a list of impacted dates/times, and use caution when using these data. These issues are being addressed and updated data products will replace the degraded files.

Access to the Near-Real-Time AMSR2 EASE-Grid Daily Global Ice Concentration and Snow Extent, Version 1 data set in the legacy, on-premises archive at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) will be retired on 28 October 2025. The NASA Earthdata Cloud is now the primary data archive for the data.

High Mountain Asia Supraglacial Lake Extents on Debris Covered Glaciers, 1988-2023, Version 1 is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set identifies the extent of supraglacial lakes (SGLs) from 1988 through 2023 on 769 of the largest debris-covered glaciers in the High Mountain Asia region.

The AMSR2 Daily Polar Gridded Sea Ice Concentrations and AMSR2 Daily Polar Gridded Brightness Temperatures data sets, available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), have been updated to Version 2. This update includes a format change from binary to NetCDF, resolves the previous pole hole mask issue, and adds the 37H channel.

The NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) will add 4 IceBridge data sets to NASA Earthdata Cloud on 14 August 2025, completing the migration of all IceBridge collections to the cloud platform. Earthdata Cloud is NASA’s archive of Earth observations, hosted in Amazon Web Services (AWS). While these data sets will continue to be available via their current URLs and workflows, these legacy access methods will be retired soon.

The AMSR-E/AMSR2 Unified L2B Half-Orbit 25 km EASE-Grid Surface Soil Moisture, Version 1 data set, available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been updated. This update includes the addition of the AMSR-E derived data, with temporal coverage of the data set now spanning June 2002 - present (with a gap in data from October 2011 - July 2012, between the end of the AMSR-E mission and the beginning of AMSR2).

ICESat-2 and CryoSat-2 L4 Monthly Arctic Snow Depth and Sea Ice Thickness, Version 1 is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains monthly estimates of Arctic sea ice, snow depth, and ice thickness using combined ICESat-2 and CryoSat-2 freeboard measurements.

Data set DOI: https://doi.org/10.5067/04YYIKXW0GJS

IceBridge UAF L2 HF Bed Elevation and Ice Thickness, Version 1 and IceBridge ARES L2 Bed Elevation and Ice Thickness, Version 1 are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). These data sets contain glacier surface elevation, bed elevation, and ice thickness measurements for Alaska and Northwestern Canada.

Access to ICESat/GLAS data sets in the legacy, on-premises archive at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) will be retired on 11 September 2025. The NASA Earthdata Cloud is now the primary data archive for ICESat/GLAS data. If you currently access data through the legacy, on-premises archive, including through the HTTPS File System or Earthdata Search Stage for Delivery (ECHO Orders), please update your data access workflows and scripts to use the Earthdata Cloud archive.

The Near Real-time SMAP L1B Radiometer Half-Orbit Time-Ordered Brightness Temperatures, Version 105, and Near Real-time SMAP L2 Radiometer Half-Orbit 36 km EASE-Grid Soil Moisture, Version 107 data sets, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), have been experiencing a data outage since 11 August 2025.

Access to IceBridge data sets and data sets related to ICESat-2, ICESat/GLAS and IceBridge in the legacy, on-premises archive at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) will be retired on 11 September 2025. The NASA Earthdata Cloud is now the primary data archive for these data.

Access to SMAP data sets in the legacy, on-premises archive at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) will be retired on 28 October 2025. The NASA Earthdata Cloud is now the primary data archive for SMAP data. If you currently access data through the legacy, on-premises archive, including through the HTTPS File System, Earthdata Search Stage for Delivery (ECHO Orders), or Customize (ESI) in Earthdata Search or the EGI API, please update your data access workflows and scripts to use the Earthdata Cloud archive.

The SnowEx23 Mar23 IOP Snow Depth Profiles, Version 1 data set is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). The data set contains snow depth profiles measured as part of the NASA SnowEx 2023 March 2023 Intensive Observation Period. Ground-based snow depth profile measurements were taken in the vicinity of 170 snow pits distributed across five study areas in Northern Alaska. Temporal coverage spans from 07 March to 16 March 2023.

The NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) learned that the U.S. Department of Defense (DoD) will continue processing and delivery of data from the Special Sensor Microwave Imager/Sounder (SSMIS) instrument through the retirement of the DMSP mission, which is expected in September 2026. For further details, see the Earthdata: Status Update on DMSP Data Products.