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

The MEaSUREs Greenland Image Mosaics from Sentinel-1A and -1B, Version 4 dataset, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been updated. The temporal coverage of this dataset now spans from 01 January 2015 to 24 May 2023.

The EASE-Grid Sea Ice Age, Version 4 data set, available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) has been updated through 31 December 2022. This data set provides weekly estimates of sea ice age for the Arctic derived from remotely sensed sea ice motion and sea ice extent.

Data set DOI: https://doi.org/10.5067/UTAV7490FEPB

The Polar Pathfinder Daily 25 km EASE-Grid Sea Ice Motion Vectors, Version 4 data set, available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) has been updated through 31 December 2022. This data set provides daily and weekly sea ice motion vectors including browse images of the weekly data. The source data used to generate the daily and weekly ice motion estimates are derived from AVHRR, AMSRE, SMMR, SSMI, and SSMI/S sensors; IABP buoys; and NCEP/NCAR Reanalysis forecasts.

The AMSR-E/AMSR2 Unified L2B Global Swath Ocean Products, Version 1, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), is currently being updated to include the AMSR-E portion of the dataset from 2002 to 2011, as well as select AMSR2 data from 2017 to 2021. These files are being delivered to us in batches and will be made available as we receive them.

The SMAPVEX19-22 Massachusetts Lidar Derived Digital Surface Model, Version 1 and SMAPVEX19-22 Millbrook Lidar Derived Digital Surface Model, Version 1 data sets, are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). These data consist of ground surface elevations derived from source lidar measurements collected in August 2022 in the vicinity of Millbrook, NY, and Petersham, MA during the SMAPVEX19-22 campaign.

The MEaSUREs Calibrated Enhanced-Resolution Passive Microwave Daily EASE-Grid 2.0 Brightness Temperature ESDR, Version 1 data set, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has resumed forward processing. Reprocessing of incomplete files is complete for data from 2023. Reprocessing from December 2021 to December 2022 is ongoing. Corrected files will be added as they become available.

The Daily Global Land Parameters Derived from AMSR-E and AMSR2, Version 3 dataset, available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been updated. The dataset now covers the time period from 19 June 2002 to 31 December 2021. The 2016 data record has also been reprocessed to correct an issue caused by an incomplete reading of the 2016 brightness temperature record, which affected the DOY 204 to 366 data files.

The Sea Ice Trends and Climatologies from SMMR and SSM/I-SSMIS, Version 3 data set, available from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been extended through 31 December 2022. This data set contains sea ice concentrations, ice-covered areas, ice persistence, and sea ice extent for the Arctic and Antarctic.

The MODIS Version 6 (Collection 6) Snow Cover and Sea Ice data sets, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) will be retired in August of 2023. After this date, access to the data will no longer be available, but documentation will remain available for future reference.  NSIDC encourages users to switch to the newer MODIS Version 6.1 (Collection 6.1) data.

The Visible Infrared Imaging Radiometer Suite (VIIRS) Collection 2 (Version 2)  data sets are now available through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC).  Collection 2 includes new and improved VIIRS S-NPP snow, sea ice, and ice surface temperature data sets, as well as the first public release of VIIRS data sets from the JPSS-1 (NOAA-20) satellite, which was launched on November 18, 2017.

The MEaSUREs Greenland Image Mosaics from Sentinel-1A and -1B, Version 4 dataset, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been updated. The temporal coverage of this dataset now spans from 01 January 2015 to 25 March 2023. 

The Images of the Antarctic Ice Shelves tool as well as the Images of Antarctic Ice Shelves, Version 1 data set, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) has been retired as of 13 June 2023. Images of Antarctic Ice Shelves, Version 1 data has been incorporated into the Images of the Antarctic Ice Shelves, Version 2 data set.

The SMAPVEX19-22 Massachusetts Lidar Derived Digital Elevation Model, Version 1 and SMAPVEX19-22 Millbrook Lidar Derived Digital Elevation Model, Version 1 data sets, are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC).

The SnowEx20 Grand Mesa IOP Computed Tomography Snow Microstructure, 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 characterizes snow microstructure of six snow pits from the SnowEx 2020 Grand Mesa, Colorado Intensive Observation Period using microcomputed tomography (micro-CT).

The Land Cover Classification, Snow Cover, and Fractional Snow-Covered Area Maps from Maxar WorldView Satellite Images, Version 1 data set is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC).