NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC)

The IceBridge ATM L1B Elevation and Return Strength, Version 2 data set has been updated from 17 April 2019 through 16 May 2019 to include data from the 2019 Arctic campaign at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains spot elevation measurements of Arctic and Antarctic sea ice, and Greenland, Antarctic Peninsula, and West Antarctic region ice surface acquired using the NASA Airborne Topographic Mapper (ATM) instrumentation.

New data access options are available for the MEaSUREs Greenland Annual Ice Sheet Velocity Mosaics from SAR and Landsat, Version 1 data set, accessible from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). The data access location for this data set has changed. Users accessing this data set through a script will need to update accordingly.

The ASO L4 Lidar Point Cloud Digital Terrain Model 3m UTM Grid, 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 3 m gridded, bare-earth elevations (excluding trees) that are used as the baseline for the Airborne Snow Observatory (ASO) snow-on products. The data were collected during snow-free conditions as part of the NASA/JPL ASO aircraft survey campaigns.

The IceBridge Narrow Swath ATM L1B Elevation and Return Strength, Version 2 data set has been updated from 03 April 2019 through 16 May 2019 to include data from the 2019 Arctic campaign at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains spot elevation measurements of Greenland, Arctic, and Antarctic sea ice acquired by the NASA Airborne Topographic Mapper (ATM) narrow-swath instrumentation.

The IceBridge Narrow Swath ATM L1B Elevation and Return Strength with Waveforms, Version 1 data set has been updated from 03 April 2019 through 16 May 2019 to include data from the 2019 Arctic campaign at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains spot elevation measurements with corresponding waveforms of Greenland, Arctic, and Antarctic sea ice acquired by the NASA Airborne Topographic Mapper (ATM) narrow-swath instrumentation.

Multiple VIIRS snow cover data sets, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), have been reprocessed due to an error in the planetary ephemeris data. This resulted in the use of incorrect solar and lunar vectors for the period 16 Jan. 2020 00:00:00 - 17 Jan 2020 10:00:00. The affected files were reprocessed and redelivered on 6 March 2020.

VIIRS/NPP Snow Cover 6-Min L2 Swath 375m, Version 1
Data set DOI: https://doi.org/10.5067/VIIRS/VNP10.001 V

The LVIS Classic L2 Geolocated Surface Elevation and Canopy Height Product, 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 geolocated surface elevation and canopy height measurements collected by the NASA Land, Vegetation, and Ice Sensor (LVIS), an airborne lidar scanning laser altimeter.

The LVIS Classic L1B Geolocated Return Energy Waveform, 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 geolocated return energy waveforms collected by the NASA Land, Vegetation, and Ice Sensor (LVIS), an airborne lidar scanning laser altimeter.

New data access options are available for the MEaSUREs Phase-Based Antarctica Ice Velocity Map, Version 1 data set, accessible from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). The direct download location for this MEaSUREs (Making Earth System Data Records for Use in Research Environments) data set has changed.

The IceBridge UAF Lidar Scanner L1B Geolocated Surface Elevation Triplets, Version 1 data set has been updated to include 2019 Alaska campaign data from 22 September 2019 through 28 September 2019 at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains scanning laser altimetry data points acquired by the airborne University of Alaska Fairbanks (UAF) Glacier Lidar system.

The MEaSUREs Greenland Ice Sheet Mosaics from SAR Data, Version 1 data set, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been updated with new filenames in the GDAL virtual format (.vrt) files. The file names for the 20 m uncalibrated mosaic were also updated.

The SnowEx17 Ground Penetrating Radar, Version 2 data set, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been updated to Version 2. This data set contains the results of a ground penetrating radar survey conducted at Grand Mesa, Colorado. Data include the two-way travel time, calculated snow depth, and calculated snow water equivalent. Data were collected between 08-25 February 2017 as part of the 2017 SnowEx campaign. Changes to Version 2 include:

The IceBridge-Related DMS-Derived L4 Sea Ice Surface Cover Classification Orthorectified Images, Version 1 data set is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) from 23 March 2010 through 25 July 2017. The data set comprises reprocessed, orthorectified images depicting labels that indicate the sea ice surface category.

The IceBridge-Related DMS-Derived L4 Sea Ice Surface Cover Classification Images, Version 1 data set is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC)) from 23 March 2010 through 16 April 2018. This data set contains reprocessed images depicting labels that indicate sea ice surface category created by processing IceBridge DMS L0 Raw Imagery with the Open Source Sea-ice Processing Algorithm.

The IceBridge CAMBOT L1B Geolocated Images, Version 2 data set, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been updated from a basic to a standard level of service. Please see our Adding clarity to NSIDC data support with new Level of Service (LoS) model article more information.

The MEaSUREs Greenland Ice Velocity: Selected Glacier Site Velocity Maps from InSAR, Version 2 data set is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set, part of the Making Earth System Data Records for Use in Research Environments (MEaSUREs) Program, provides velocity estimates determined from Interferometric Synthetic Aperture Radar (InSAR) data for major glacier outlet areas in Greenland beginning 12 June 2008.

The MEaSUREs Greenland Image Mosaics from Sentinel-1A and -1B, Version 2 data set, available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) has been updated with mosaics through September 2019. This data set, part of the Making Earth System Data Records for Use in Research Environments (MEaSUREs) Program, provides 6 and 12-day 50 m resolution image mosaics of the Greenland coastline and ice sheet periphery beginning in January 2015.

The ATLAS/ICESat-2 L3A Ocean Surface Height, Version 2 (ATL12) data set, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been updated from a basic to a comprehensive level of service.

In August 2019, NSIDC discovered large gaps in the 2018 F18 brightness temperature record. These data gaps occurred between 11 February - 13 March and 30 September - 31 October. They affected data in both the Northern and Southern Hemispheres. In January 2020, the missing data were recovered and reprocessed.

The IceBridge KT19 IR Surface Temperature, Version 1 data set has been updated to include 2019 Arctic campaign data from 27 March 2019 through 17 May 2019 at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains surface temperature measurements of Arctic and Antarctic sea ice and land ice acquired by the Heitronics KT19.85 Series II Infrared Radiation Pyrometer.