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

ATLAS/ICESat-2 L3B Gridded Antarctic and Arctic Land Ice Height, Version 5 (ATL14), and ATLAS/ICESat-2 L3B Gridded Antarctic and Arctic Land Ice Height Change, Version 5 (ATL15) are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC).

Access to ICESat-2 Derived Canopy Height Model, Version 1 data set (IS2CHM) 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 15 January 2026. The NASA Earthdata Cloud is now the primary data archive for this data.

Access to the Glacial and Fast Ice Distributions in Southeast Greenland Fjords, Version 1 data set (NSIDC-0796) 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 15 January 2026. The NASA Earthdata Cloud is now the primary data archive for this data.

Version 6 of both ATLAS/ICESat-2 L1B Converted Telemetry Data and ATLAS/ICESat-2 L2A Global Geolocated Photon Data will be retired from the NSIDC DAAC on 2 February 2026. Upon retirement, data will no longer be accessible, but all related documentation will remain available on the data set web page for future reference.

The Near-Real-Time AMSR2 EASE-Grid Daily Global Ice Concentration and Snow Extent, Version 1 data set, available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), was missing data for the sea ice parameter from 1 October 2025 through 7 November  2025. The missing data have now been backfilled and are available for download.

The SnowEx23 Soil Moisture Sensor Measurements, 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 soil sensor measurements collected as part of the SnowEx Alaska 2023 field campaign. Time series measurements occurred at two locations within the Bonanza Creek Experimental Forest, Alaska.

IceBridge BedMachine Greenland, Version 6 is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains a bed topography and bathymetry map of Greenland, as well as surface elevation and ice thickness data. This version of the dataset includes new bathymetry data and ice thickness estimate inputs. In addition to the ice/ocean/land mask, a glacier mask has been added.

The IceBridge LVIS L1A Geotagged Images, Version 1,  data set, available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has had additional data added from the Antarctica 2009, 2010, 2011 and Greenland 2010, 2011, 2012, 2013 campaigns. This dataset contains geotagged images paired with the Land, Vegetation, and Ice Sensor (LVIS), an airborne lidar scanning laser altimeter.

The SnowEx23 Apr23 IOP Snow Pit Measurements, 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 snow pit data collected from 13 snow pits excavated during the NASA SnowEx23 field campaign near Fairbanks, Alaska. Temporal coverage spans from 

1 April 2023 to 18 April 2023.

ICESat-2 L4 Monthly Gridded Sea Ice Thickness, Version 4 is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains gridded, monthly sea ice thickness using ATLAS/ICESat-2 L3A Sea Ice Freeboard (ATL10) Version 7 data and NASA Eulerian Snow On Sea Ice Model (NESOSIM) snow loading as well as other ice thickness estimates using alternative input assumptions.

The SnowEx21 Prairie Station Cosmic Ray Neutron Sensor Snow Water Equivalent and Soil Moisture, 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 raw and processed hourly observations from a stationary Hydroinnova cosmic ray neutron sensor. Data were collected at the SnowEx Prairie site at the Central Agricultural Research Center in Moccasin, Montana. Temporal coverage spans from 22 November 2020 to 8 May 2021.

The SnowEx20 Grand Mesa IOP Ground-Based Passive Microwave Radiometer Measurements, 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 passive microwave measurements collected as part of the NASA SnowEx 2020 field campaign at the Grand Mesa, Colorado IOP study site. Temporal coverage spans from 4 February to 12 February 2020.

The distribution of ATLAS/ICESat-2 expedited latency “Quick Look” data sets for ATL07 and ATL10, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has resumed as of 14 November, 2025. The lapse in the input SSMIS (DMSP) data has ended so the quick look products are available once again.

ATLAS/ICESat-2 L3A Sea Ice Height Quick Look (ATL07QL)
Data set DOI: http://doi.org/10.5067/ATLAS/ATL07QL.007

The SnowEx21 Time Series Snow Change Measurements from Interval Boards, 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 snow change measurements from interval boards collected as part of the NASA SnowEx21 time series field campaign. Temporal coverage spans from 18 November 2020 to 12 May 2021.

The SnowEx23 Apr23 IOP Snow Surface Imagery, 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 54 photographs of snow surfaces collected during the NASA SnowEx23 field campaign near Fairbanks, Alaska. Temporal coverage spans from 14 April 2023 to 18 April 2023.

The MEaSUREs Global Record of Daily Landscape Freeze/Thaw Status, Version 5 data set, available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been updated to version 5.2. This minor version update expands the temporal coverage of the dataset, with data now spanning 1 January 1979 to 31 December 2023. Additionally, all HDF files have been reprocessed to update/correct file metadata.

The SnowEx17 Snow Depth from Time-Lapse Imagery, 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 snow depth measurements extracted from snow poles in time-lapse images near Grand Mesa, CO during the SnowEx 2016-2017 field campaign. Temporal coverage spans from 1 October 2016 to 1 June 2017.

Data set DOI:  https://doi.org/10.5067/V0SXD1CCTFWF

The SnowEx23 Snow Depth from Time-Lapse Imagery, 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 snow depth measurements extracted from snow poles in time-lapse images near Fairbanks, AK during the SnowEx 2022-2023 field campaign. Temporal coverage spans from 14 October 2022 to 1 June 2024.

Data set DOI:  https://doi.org/10.5067/1SQYOLQLCJLD

The SnowEx23 Apr23 IOP HyLab Airborne Surface Spectral Reflectance, Version 1 data set is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This dataset provides surface spectral reflectance imagery which demonstrates snow albedo and snow optical properties during the NASA SnowEx 2023 field campaign that took place in Alaska between 7 April 2023 and 5 May 2023.

The NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) is pleased to announce that the OpenAltimetry web application has been updated to serve Version 7 of the ATLAS/ICESat-2 data sets.