NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC)
Data Updates
The IceBridge MCoRDS L1B Geolocated Radar Echo Strength Profiles, Version 2 and IceBridge MCoRDS L2 Ice Thickness, Version 1 data sets at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) have been updated to include data from the Spring 2018 Arctic campaign.
These data were acquired using the University of Kansas Center for Remote Sensing of Ice Sheets (CReSIS) Multichannel Coherent Radar Depth Sounder (MCoRDS).
The SnowEx20 Grand Mesa Autumn 2019 Snow Depth, Version 1 data set is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). Snow depth was measured in autumn 2019 (04-07 November) as part of the NASA SnowEx 2020 campaign at Grand Mesa, CO. Measurements were taken in the vicinity of snow pit locations and between pit locations using a Magnaprobe or manual depth probes.
The SMAPVEX16 Manitoba In Situ Vegetation Data, Version 1 data set available from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) has been updated. The CSV file containing crop biomass data has been updated to include additional data from all sites. A geodatabase in compressed ZIP format, has also been added, containing tables and ancillary data, such as flight lines and the shapefiles for the study area.
The temporal coverage for the ICESat-2 L4 Monthly Gridded Sea Ice Thickness, Version 1 (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 September 2019 (supplementing the existing data for the 2019-2020 winter season), as well as September 2020 through April 2021. This data set reports monthly, gridded winter sea ice thickness across the Arctic Ocean.
The CALFIN Subseasonal Greenland Glacial Terminus Positions, 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 polyline and polygon shapefiles of glacial terminus positions in Greenland from 1972 to 2019. The temporal resolution is sub seasonal and the spatial resolution is approximately 30m. Shapefiles are available for individual glaciers and there are also shapefiles that contain all of the glaciers that were studied.
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 released through 5 June 2021.
The Near-Real-Time SSM/I-SSMIS EASE-Grid Daily Global Ice Concentration and Snow Extent (NISE) data set, available from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), now includes data derived from all available Special Sensor Microwave Imager/Sounder (SSMIS) sensors. Version 5 of the NISE data set contains data from the F18 SSMIS sensor. The newly released data from the F16 and F17 will be provided in Version 3 and Version 4, respectively. Data from F16, F17, and F18 will all be updated in near-real-time as new data are processed.
The SMAP Radiometer Twice-Daily rSIR-Enhanced EASE-Grid 2.0 Brightness Temperatures, Version 2 data set accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), is now available. The data set has been reprocessed using SMAP L1B Radiometer Half-Orbit Time-Ordered Brightness Temperatures, Version 5 as input. This input is different enough from version 1 that users should not mix gridded version 1 and 2 data.
The Two-dimensional Velocities of Ice Mélange from Jakbobshavn Isbræ, Greenland, 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 velocity components and resolved speeds for the proglacial ice mélange at Jakobshavn Glacier, Greenland. An ice mélange is defined as a tightly packed collection of icebergs and sea ice which abut the terminus of a glacier.
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 with improved georeferencing for nine sea ice flights. This data set contains high-resolution imagery taken with the Continuous Airborne Mapping By Optical Translator (CAMBOT) system over Antarctica and Greenland.
The MEaSUREs Greenland Ice Velocity: Selected Glacier Site Velocity Maps from Optical Images, Version 3 data set, accessible from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been updated. New data have been added so the data set now spans 1 March 1985 - 31 December 2020. This data set is part of the NASA Making Earth System Data Records for Use in Research Environments (MEaSUREs) program. It consists of mean monthly velocity maps for selected glacier outlet areas.
The Daily Global Land Parameters Derived from AMSRE and AMSR2, Version 3 data set, accessible from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), is now available. The data have been reprocessed using the same algorithm as previous versions except it includes some refinements and performance enhancements, and a new VPD land parameter is now included. New data have also been added, so the record now spans 19 June 2002 to 31 December 2020.
The ATLAS/ICESat-2 L3B Daily and Monthly Gridded Polar Sea Surface Height Anomaly, 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 daily and monthly gridded polar sea surface height (SSH) anomaly, derived from the along-track ATLAS/ICESat-2 L3A Sea Ice Height product (ATL10, V4). The ATL10 product identifies leads in sea ice and establishes a reference sea surface used to estimate SSH in 10 km along-track segments.
The High Mountain Asia 1km 6-hourly Downscaled Meteorological Data 2003 to 2018, 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 0.01 degree (nominally 1km) 6-hourly downscaled European Centre for Medium-Range Weather Forecasts (ECMWF) atmospheric forcings and Climate Hazards Group InfraRed Precipitation with Station data (CHIRPS) precipitation from 2003 to 2018 across the High Mountain Asia region.
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) is now available. Images created from data acquired on or after 1 January 2015 have been reprocessed using a corrected DEM. The GeoTIFFS are available in the latest cloud optimized format. New data have also been added so the data set now spans 12 June 2008 to 12 December 2020.
The ATLAS/ICESat-2 L3A Along Track Inland Surface Water Data, Version 4 (ATL13) data set from the Ice, Cloud, and land Elevation Satellite-2 (ICESat-2) mission is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC).
The following 2 data sets are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC):
The IceBridge BedMachine Greenland, Version 4 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. This data set contains a bed topography/bathymetry map of Greenland based on mass conservation, multi-beam data, and other techniques. It also includes surface elevation and ice thickness data, as well as an ice/ocean/land mask.
Data set DOI: https://doi.org/10.5067/VLJ5YXKCNGXO
The MEaSUREs Greenland Image Mosaics from Sentinel-1A and -1B, Version 4 data set, accessible from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) is now available. The data have been reprocessed using a corrected DEM and the data set now spans 1 January 2015 to 27 February 2021. This data set is part of the NASA Making Earth System Data Records for Use in Research Environments (MEaSUREs) program.
The MEaSUREs Greenland Annual/Quarterly/Monthly Ice Sheet Velocity Mosaics from SAR and Landsat, Version 3 data sets, accessible from the National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) are now available. These annual, quarterly and monthly data sets have been reprocessed using a corrected DEM and the GeoTIFFs are now cloud optimized. New data have been added so the data sets now span 01 December 2014 - 30 November 2020.