NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC)
Data Updates
The Near Real-time SMAP L1B Radiometer Half-Orbit Time-Ordered Brightness Temperatures, Version 105, and the Near Real-time SMAP L2 Radiometer Half-Orbit 36 km EASE-Grid Soil Moisture, Version 107, data set, available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), in the NASA
The Polar Pathfinder Daily 25 km EASE-Grid Sea Ice Motion Vector Version 4 and EASE-Grid Sea Ice Age Version 4 data sets, available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), have been updated through 2024. The Polar Pathfinder Daily 25 km EASE-Grid Sea Ice Motion Vector data set contains daily and weekly sea ice motion vectors, as well as browse images representing the weekly data.
The Quicklook Arctic Weekly EASE-Grid Sea Ice Age, Version 1, and Quicklook Arctic Weekly EASE-Grid Sea Ice Motion Vectors, Version 1 data sets, available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), have been updated with data from 1 January 2025 through 2 December 2025.
The Snow Melt Onset Over Arctic Sea Ice from SMMR and SSM/I-SSMIS Brightness Temperatures, Version 5 data set, available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been updated to include data through 2025. Data files are now available in yearly NetCDF files, replacing the single multi-year NetCDF data file.
High Mountain Asia Daily Reach-Scale River Discharge using Data Assimilation, 2004-2019, Version 1 is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set reports daily, reach-scale river discharge for 114,147 river reaches in the High Mountain Asia region from 1 January 2004 through 31 December 2019.
The ATLAS/ICESat-2 L3B Monthly Gridded Dynamic Ocean Topography, Version 4, and ATLAS/ICESat-2 L3B Monthly 3-Month Gridded Dynamic Ocean Topography, Version 2 data sets, available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), require reprocessing.
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).
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.
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.
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.
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 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 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 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.
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 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 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.