Data Announcements

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 Arctic Russia, Alaska, Glacier National Park, Indonesia, and the French Alps.

The MEaSUREs Greenland Quarterly Ice Sheet Velocity Mosaics from SAR and Landsat, Version 5 and MEaSUREs Greenland Monthly Ice Sheet Velocity Mosaics from SAR and Landsat, Version 5 data sets, available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), have been updated. New data have been added, and both datasets now span from 01 December 2014 to 30 November 2024.

The NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) added 20 Nimbus data sets from the NASA SnowEx collection to NASA Earthdata Cloud on 15 April 2025. Earthdata Cloud is NASA’s archive of Earth observations, hosted in Amazon Web Services (AWS). The Earthdata Cloud HTTPS data access URL is now available from each data set landing page using the HTTPS File System link under Data Access & Tools.

The next NASA ESDIS data training webinar, “Accelerating Scientific Discovery through Exploratory and Open Data Access via OPeNDAP in the Cloud” will be held on Wednesday, April 23, 2025, at 2 PM EDT (-04:00 UTC).          Webinar POC: Jennifer Brennan, NASA Earthdata Webinar Host, Task Lead, NASA ESDIS User and Mission Support Office (EUMSO)

The NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) will add 43 data sets from the High Mountain Asia (HMA) collection to NASA Earthdata Cloud on 29 April 2025. 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 SMAP Level-4 data sets, available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), have been updated to Version 8. For all Level-4 data products, data from the entire time series (31 March 2015 to present) is now available. For each product, SMAP L-band brightness temperature data from descending and ascending half-orbit satellite passes (approximately 6:00 a.m. and 6:00 p.m.

As part of NSIDC DAAC’s continuing effort to fully transition our data and access tools to NASA Earthdata Cloud, the Data Access Tool "Order Files” option will be retired and replaced with Earthdata Download on April 16, 2025. Earthdata Download is an application that enables efficient direct download for orders of any size. This update ensures continued access to all datasets available through the Data Access Tool, whether they are cloud-hosted or not.

NOAA@NSIDC is pleased to announce that both Version 4 and Version 5 of the Climate Data Record of Passive Microwave Sea Ice Concentration data set, accessible through the National Snow and Ice Data Center (NSIDC), have been updated to include the time period of 01 July 2024 through 31 December 2024.

The MEaSUREs Greenland Image Mosaics from Sentinel-1A and -1B, Version 4 and MEaSUREs Greenland 6 and 12 day Ice Sheet Velocity Mosaics from SAR, Version 2 data sets, available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), have been updated. New data have been added, and the temporal coverage for both datasets now spans from 01 January 2015 to 20 December 2024.

The NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) added 3 Pre-Icebridge data sets to NASA Earthdata Cloud on 8 April 2025. 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. Therefore, users are encouraged to update their direct download workflows, including any data download scripts, to use the new Earthdata Cloud HTTPS location after 8 April 2025.

The NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) added 55 data sets from the Icebridge collection to NASA Earthdata Cloud on 8 April 2025. 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. Therefore, users are encouraged to update their direct download workflows, including any data download scripts, to use the new Earthdata Cloud HTTPS location after 8 April 2025.

The Visible Infrared Imaging Radiometer Suite (VIIRS) Version 1 (Collection 1) data sets was retired from the NSIDC DAAC on April 8, 2025. Data from Collection 1 is no longer accessible, but all related documentation will remain available on the data set web page for future reference. We recommend using VIIRS Version 2 (Collection 2) of these data sets.The NSIDC DAAC provides access to the VIIRS Version 2 (Collection 2) data and documentation at the following location: NSIDC DAAC VIIRS Data Collection.

The NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) added SnowEx 2020, SnowEx 2021, and SnowEx 2023 data sets from the NASA SnowEx collection to NASA Earthdata Cloud on 8 April 2025. Earthdata Cloud is NASA’s archive of Earth observations, hosted in Amazon Web Services (AWS). The Earthdata Cloud HTTPS data access URL will be available from each data set landing page using the HTTPS File System link under Data Access & Tools after the publication date

The NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) will add four Airborne Snow Observatory (ASO) data sets to NASA Earthdata Cloud on 2 April 2025.  Earthdata Cloud is NASA’s archive of Earth observations, hosted in Amazon Web Services (AWS). The Earthdata Cloud HTTPS data access URL will be available from each data set landing page using the HTTPS File System link under Data Access & Tools after the publication date.

The NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) will add SnowEx 2017 data sets from the NASA SnowEx collection to NASA Earthdata Cloud on 2 April 2025. Subsequent SnowEx campaigns (SnowEx 2020, SnowEx 2021, and SnowEx 2023) will also be added to Earthdata Cloud in the coming weeks. Earthdata Cloud is NASA’s archive of Earth observations, hosted in Amazon Web Services (AWS).

ATLAS/ICESat-2 L3A Along Track Coastal and Nearshore Bathymetry, Version 1 is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains global along-track coastal and nearshore bathymetry, consisting of refraction-corrected seafloor and sea surface heights (orthometric and ellipsoidal heights and instantaneous depths), as well as associated uncertainties. The data are derived from ATLAS/ICESat-2 L2A Global Geolocated Photon Data (ATL03).

The NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) will add 16 data sets from the SMAP Related collection to NASA Earthdata Cloud on 8 April 2025. Earthdata Cloud is NASA’s archive of Earth observations, hosted in Amazon Web Services (AWS). The Earthdata Cloud HTTPS data access URL will be available from each data set landing page using the HTTPS File System link under Data Access & Tools after the publication date.

The NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) will add 26 data sets from the SMMR and SSM/I-SSMIS collection to NASA Earthdata Cloud on 8 April 2025. Earthdata Cloud is NASA’s archive of Earth observations, hosted in Amazon Web Services (AWS). The Earthdata Cloud HTTPS data access URL will be available from each data set landing page using the HTTPS File System link under Data Access & Tools after the publication date.

Version 1.1 of Near Real-Time MODIS/Terra L3 Global Daily 500m SIN Grid Snow Cover, Grain Size, and Dust Radiative Forcing is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains the following parameters: snow fraction, snow grain size, vegetation fraction, rock fraction, ice fraction, shade fraction, deltavis, radiative forcing, and optical snow grain size. Version 1.1 data are forward processing and will be updated once a day.

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