Data Announcements

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.

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.

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.

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.

The Randolph Glacier Inventory - A Dataset of Global Glacier Outlines, Version 7 dataset is now available through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set is a global set of glacier outlines intended as a snapshot of the world’s glaciers beyond the ice sheets. It provides a single outline for each glacier at approximately the year 2000 as well as a set of attributes and other relevant auxiliary information.

The Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS Passive Microwave Data, Version 2 data set, available from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been updated through  31 March 2023. This data set is generated from brightness temperature data and is designed to provide a consistent time series of sea ice concentrations spanning the coverage of several passive microwave instruments.

Due to planned maintenance aboard the SMAP spacecraft today September 14, 2023 data loss and latency impact are expected while the instrument is in safe-mode. Operations are estimated to resume as normal by tomorrow September 15, 2023. We apologize for any inconvenience.

The SnowEx20 Boise River Basin SnowMicroPen (SMP) Raw Penetration Force Profiles, Version 1 (SNEX20_BR_BSU_SMP) 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 penetration force profiles from the SnowEx 2020 time series campaign in the Boise River Basin in Idaho. Temporal coverage spans from 18 December 2019 to 24 January 2020.

The ATLAS/ICESat-2 L3B Monthly 3-Month Gridded Dynamic Ocean Topography (ATL23), Version 1 data set is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC).

Version 3 of the ATLAS/ICESat-2 L3B Mean Inland Surface Water Data (ATL22) data set, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been released.

The SMAPVEX19-22 Millbrook Airborne Lidar and SMAPVEX19-22 Massachusetts Airborne Lidar, Version 1 data sets, are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). These lidar measurements were collected in April and August 2022 in the vicinity of Millbrook, NY, and Petersham, MA during the SMAPVEX19-22 campaign.