Data Announcements

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 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 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 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. 

Radiostratigraphy and Age Structure of the Greenland Ice Sheet, Version 2 is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains the traced deep radiostratigraphy of the Greenland Ice Sheet from airborne deep ice-penetrating radar with new temporal coverage from 24 June 1993 to 16 May 2019.Data set DOI: http://doi.org/10.5067/SZSVA3CWV3U4

The SMAPVEX19-22 Massachusetts Plant Area Index, Version 1, and SMAPVEX19-22 Millbrook Plant Area Index, Version 1 data sets are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). These data consist of plant area index (PAI) and the RGB images from which the PAI values were derived.

The Global Land Ice Measurements from Space (GLIMS) Glacier Database, 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 new glacier outlines for several regions, including Scandinavia, Arctic Canada, Swiss Alps, the Andes, and the Himalayas.

The SnowEx20 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 SnowEx20 time series field campaign Surveys were conducted at field sites across the Western United States. Temporal coverage spans from 8 December 2019 to 22 April 2020.

ATLAS/ICESat-2 L3B Daily and Monthly Gridded Sea Ice Freeboard, Version 5, ATLAS/ICESat-2 L3B Daily and Monthly Gridded Polar Sea Surface Height Anomaly, Version 4, and ATLAS/ICESat-2 L3B Slope-Corrected Land Ice Height Time Series, Version 7 are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC).

Data transformation services through NASA Earthdata Harmony are now available for Version 7 of 9 ATLAS/ICESat-2 data sets archived at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). Harmony allows users to subset NASA ESDIS data available in Earthdata Cloud to their specific spatial and temporal regions of interest. Users can access Harmony through the NASA Earthdata Search interface or programmatically via Harmony’s API or harmony-py Python library.

ATLAS/ICESat-2 L3B Weekly Gridded Atmosphere (ATL16), Version 6, ATLAS/ICESat-2 L3B Monthly Gridded Atmosphere (ATL17), Version 6, ATLAS/ICESat-2 L3B Monthly Gridded Dynamic Ocean Topography, Version 4, ATLAS/ICESat-2 L3B Monthly 3-Month Gridded Dynamic Ocean Topography, Version 2, and ATLAS/ICESat-2 L3B Mean Inland Surface Water Data

The SnowEx23 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). The data set contains time-lapse images captured by cameras placed near Fairbanks, AK as part of the NASA SnowEx 2022-2023 field campaign. Temporal coverage spans from 14 October 2022 to 6 November 2024.Data set DOI:  https://doi.org/10.5067/UB3A44RTR6JD

The SMAP Radiometer Twice-Daily rSIR-Enhanced EASE-Grid 2.0 Brightness Temperatures, Version 3 data set is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains twice-daily, enhanced-resolution brightness temperature data derived from the SMAP radiometer. Version 3 includes the latest version of SMAP input data, as well as other updates.

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 September 2025. This data set provides daily gridded brightness temperatures derived from passive microwave sensors and distributed in a polar stereographic projection.

Data transformation services through NASA Earthdata Harmony are now available for L2-L4 Soil Moisture Active Passive (SMAP) data sets archived at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). Earthdata Harmony allows users to subset and transform NASA ESDIS data available in Earthdata Cloud. Users can access Earthdata Harmony through the NASA Earthdata Search interface or programmatically via Harmony’s API or harmony-py Python library.

The SnowEx Mores Creek Summit (MCS) Airborne LiDAR Survey, Version 1 and SnowEx Mores Creek Summit (MCS) Airborne LiDAR Survey Raw, Version 1 data sets, available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), have been updated. Data files from 13 Jan 2025 through  01 May 2025 have been added to both data sets.  Additionally, corrupted GeoTIFF files were replaced for 8 December 2022 and 9 February 2023.

Access to AMSR-E and AMSR-E/AMSR2 Unified 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 18 November 2025. The NASA Earthdata Cloud is now the primary data archive for AMSR-E and AMSR-U data.

Access to Passive Microwave 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 15 January 2026. The NASA Earthdata Cloud is now the primary data archive for Passive Microwave data.