Data Announcements

News and tips for data users
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New versions of the following SMAP Level-1, Level-2, and Level-3 Data Sets are available from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). Noteworthy changes to the L1 data include a new land/water mask and algorithm modifications to reduce radio frequency interference. The L2 and L3 products are updated on the basis of this new source data. More detailed descriptions of the changes are available in the data set documentation. Note that coverage is currently available from 04 Dec 2023 onward.
The LVIS Classic L1B Geolocated Return Energy Waveforms, LVIS Classic L2 Geolocated Surface Elevation and Canopy Height Product, and LVIS L1A Geotagged Images Version 1 data sets, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), have been updated to include data from the 2023 Gabon campaign.
The High Mountain Asia Daily 0.05 x 0.05 deg Noah-MP Land Surface Model Reanalysis, 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 provides a water budget reanalysis for the High Mountain Asia (HMA) region from 2003 to 2020.
The Bootstrap Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS, Version 4 data set is now available from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). With Version 4, the data are now provided in NetCDF format, and temporal coverage is extended to March 31, 2023. Links to scripts that convert the NetCDF back to the original binary format are available in the data set documentation. The Version 3 data in binary format will remain available until May 2024.
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 2023-11-26.
The Pre-IceBridge LVIS L0 Raw Ranges, Version 1 data set, will be retired from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) on 30 November 2023. After this date, access to the data will no longer be available, but the data set documentation will remain available for future reference.   Access to the documentation is provided on the data set web page at the NSIDC DAAC: https://nsidc.org/data/blvis0/versions/1
Version 5 of multiple ATLAS/ICESat-2 along-track data sets will be retired from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) on 19 December 2023.
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 October 2023. This data set provides daily gridded brightness temperatures derived from passive microwave sensors and distributed in a polar stereographic projection.
NOAA@NSIDC is pleased to announce that the Rutgers Northern Hemisphere 24 km Weekly Snow Cover Extent, September 1980 Onward, Version 1 data set, accessible through the National Snow and Ice Data Center (NSIDC), has been updated to include the 2023 water year. The data record now extends to 02 October 2023. This data set provides weekly snow cover extent for the Northern Hemisphere in NetCDF format beginning September 1980. Data Set DOI: https://doi.org/10.7265/zzbm-2w05
The MEaSUREs Greenland Ice Velocity: Selected Glacier Site Single-Pair Velocity Maps from Optical Images, Version 1 data set, available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been updated. The data now spans through the end of 2022. An adjustment has been made to the empirical corrections applied to velocities derived from Sentinel-2. This adjustment was due to a change in the ESA orthorectification process that started on 23 August 2021.
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. The temporal coverage for the image mosaics has been extended until 28 August 2023, and the 6 and 12 day velocity mosaics now spans until 16 August 23.
The ATLAS/ICESat-2 L3B Gridded Antarctic and Arctic Land Ice Height (ATL14) and ATLAS/ICESat-2 L3B Gridded Antarctic and Arctic Land Ice Height Change (ATL15) data sets have been updated to Version 3.
The temporal coverage of this data set has been extended to include the 2022 water year.
The ATLAS/ICESat-2 L1B Converted Telemetry Data (ATL02), Version 5 data set, will be retired from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) on 13 November 2023.
Reminder that after 31 December 2023, FTP access to NOAA@NSIDC data will no longer be available. Instead, you can now access NOAA@NSIDC data using the HTTPS protocol. We are transitioning from FTP to HTTPS for data distribution to improve user accessibility, particularly through web browsers.
NOAA@NSIDC is pleased to announce that the Climate Data Record of Passive Microwave Sea Ice Concentration, Version 4 data set, accessible through the National Snow and Ice Data Center (NSIDC), has been updated to include the time period of 01 January 2023 through 30 June 2023. This data set provides a consistent daily and monthly time series of sea ice concentrations beginning 25 October 1978 for both the north and south polar regions on a 25 km x 25 km grid.
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. The temporal coverage for both the image mosaics and 6 and 12 day velocity mosaics data now spans from 01 January 2015 to 23 July 2023.
New versions (Version 5) of the ATLAS/ICESat-2 L3B Weekly Gridded Atmosphere and ATLAS/ICESat-2 L3B Monthly Gridded Atmosphere data sets, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), have been released.
NOAA@NSIDC is pleased to announce that the Daily Great Lakes Ice Concentration, 1973 Onward, Version 1 data set is now available through the 2023 ice season. In addition, shapefiles for the 2003 ice season through the 2023 ice season have been added as a format of the data set. This data set consists of daily gridded lake ice concentration for the Laurentian Great Lakes from the NOAA Great Lakes Environmental Research Laboratory (GLERL).
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 through 31 December 2021. The F/T status is now provided as a single Earth System Data Record derived from SMMR, SSM/I, and SSMIS from 1979 to 2020, and AMSR2 from 2021 onwards. The separate AMSR-E–AMSR2 data record (2002 - 2020) has been discontinued.