Data Announcements

News and tips for data users

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The SnowEx21 Cameron Pass Ground Penetrating Radar, Version 1 (SNEX21_COCP_GPR), and SnowEx21 Cameron Pass Ground Penetrating Radar Raw, Version 1, (SNEX21_COCP_GPR_Raw) data sets are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains the results of 1 GHz ground-penetrating radar surveys conducted at Cameron Pass, Colorado during the SnowEx21 campaign.
The MEaSUREs Greenland Ice Velocity: Selected Glacier Site Velocity Maps from InSAR, Version 4 data set, accessible from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) has been updated. New data from 01 October 2021 to 12 October 2022 have been added.
The SnowEx Meteorological Station Measurements from Grand Mesa, CO, Version 1 (Snex_Met), and SnowEx Meteorological Station Measurements from Grand Mesa, CO Raw, Version 1, (Snex_Met_Raw) data sets are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). The datasets contain air temperature, relative humidity, 4-component radiation, barometric pressure, soil-moisture, soil temperature and derived snow-depth measurements.
It has come to our attention that the fast ice extent area is underestimated in the files between January 2003 and January 2006 from the U.S. National Ice Center Arctic and Antarctic Sea Ice Concentration and Climatologies in Gridded Format data set. This is due to processing at NSIDC failing to take into account USNIC’s use of the form variable “CF” to identify fast ice during this period.
The AMSR-E/AMSR2 Unified L2B Global Swath Surface Precipitation, Version 1 data set archived at the National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) has been updated. In November 2022, the data provider began processing and delivering the AMSR-E portion of the data (01 June 2002 to 04 October 2011) to NSIDC. We will be making these files available as we receive them. Also, the AMSR2 portion has been upgraded from Validation Stage 1 to Validation Stage 2.
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 2022. This data set provides daily gridded brightness temperatures derived from passive microwave sensors and distributed in a polar stereographic projection.
The IceBridge BedMachine Greenland, Version 4 data set, will be retired from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) on 19 December 2022.
The SMAP Level-4 Data Sets, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), have been updated to version 7. For all Level-4 data products, data from the entire time series (31 March 2015 to present) are now available. Version 6 data products will be retired on 30 November 2022.  SMAP L4 Global 3-hourly 9 km EASE-Grid Surface and Root Zone Soil Moisture Analysis Update, Version 7
The Likely Basal Thermal State of the Greenland Ice Sheet, Version 1 data set, will be retired from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) on 19 December 2022.
The SMAP data acquired after anomaly recovery have been determined to be high quality and consistent with the data acquired prior to the anomaly. The radiometer calibration is stable within 0.1 K and the footprint uncertainty is within 3 km. L1 brightness temperature, L2-L3 radiometer soil moisture, and freeze/thaw products acquired since anomaly recovery will be available at NSIDC on October 7, 2022. The L4 Soil moisture/Carbon products will restart assimilation of SMAP TB observations beginning with data from October 3, 2022.
The ATLAS/ICESat-2 L3B Slope-Corrected Land Ice Height Time Series, Version 5 data set, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been updated to include data from cycle 15 of the ATLAS/ICESat-2 mission.
The Terra satellite successfully completed its Constellation Exit Maneuvers (CEM) on October 12 and 19, 2022.  The instruments have since returned to a nominal state and data processing and distribution resumed as of October 24.  Please note that there is a gap in coverage between October 10, 2022 and October 23, 2022 during which the satellite exercises and subsequent stabilization and Post-CEM calibrations took place.
NOAA@NSIDC is pleased to announce that 38 photos have been added to the Glacier Photograph Collection, Version 1. The photos range in dates from 1963 to 2022. Ten of the photos are part of a new collection called the Koni Steffen Special Collection that include photos of a glacier in Greenland that was posthumously named for Konrad Steffen, renowned Swiss glaciologist and climate scientist. The photos were taken during the Leister Expedition Go North 2022 to northern Greenland.
The MEaSUREs Multi-year Reference Velocity Maps of the Antarctic Ice Sheet, Version 1 is now available from the National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set consists of three as-complete-as-possible maps of ice velocities on the Antarctic Ice Sheet for the time periods 1995-2001, 2007-2009, 2014-2017. The maps are posted at 450 m.
The ICESat-2 L4 Along-Track Sea Ice Thickness, Version 1 (IS2SITDAT4) data set, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been updated to include data for April 2022.
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, available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), have been updated to Version 2.
The temporal coverage for the ICESat-2 L4 Monthly Gridded Sea Ice Thickness, Version 2 (IS2SITMOGR4) data set, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been extended to include data for April 2022.
The 01 January through 31 May 2022 data for the Near-Real-Time NOAA/NSIDC Climate Data Record of Passive Microwave Sea Ice Concentration, Version 2 data set, accessible through the National Snow and Ice Data Center (NSIDC) have been removed. This data set provides a near-real-time (NRT) Climate Data Record (CDR) of sea ice concentration from passive microwave data.
The Near-Real-Time DMSP SSM/I-SSMIS Daily Polar Gridded Brightness Temperatures, Version 2 data set is now available from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). With Version 2, the data are now provided in NetCDF format and temporal coverage begins on 1 November 2021. Links to scripts that convert the NetCDF back to the original binary format are available in the data set documentation. The Version 1 data in binary format will remain available until 31 December 2022.
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, are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). These Near Real-Time data are available within three hours of satellite observation.