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

Data set update: The Northern Hemisphere EASE-Grid 2.0 Weekly Snow Cover and Sea Ice Extent, Version 4 data set, distributed by the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been extended through 31 December 2017. This 25 x 25 km gridded product provides a consistent time series of sea ice concentrations from several passive microwave instruments and snow cover extent from the NOAA@NSIDC/NCDC Climate Data Record Program.

The SnowEx17 P-3 Airborne Video data set is now available from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC).

All Aquarius soil moisture products have been updated to Version 5 and are now available from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). These data sets provide swath-based Level-2 and gridded Level-3 soil moisture estimates from the NASA Aquarius passive microwave radiometer on the Satélite de Aplicaciones Científicas (SAC-D). Data are available from August 2011 through the end of the Aquarius mission in June 2015.

The MEaSUREs Greenland Ice Sheet Velocity Map from InSAR Data, Version 2 data set has been updated to include data from Winter 2017/2018 and is available from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set, part of the NASA Making Earth System Data Records for Use in Research Environments (MEaSUREs) program, contains seasonal (winter) ice-sheet-wide velocity maps for Greenland.

The IceBridge Narrow Swath ATM L1B Elevation and Return Strength with Waveforms data set is now available from 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 Antarctic sea ice. The data were acquired by the NASA Airborne Topographic Mapper (ATM) narrow-swath instrumentation between 29 October 2017 to 22 November 2017 as part of aircraft survey campaigns funded by Operation IceBridge.

The SnowEx17 Ground Penetrating Radar Raw data set is now available from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC).

This data set contains the raw and unprocessed results of a ground penetrating radar survey conducted as part of the 2017 SnowEx campaign. Data were collected between 08 February 2017 and 25 February 2017 at Grand Mesa, Colorado.

Data set DOI: https://doi.org/10.5067/6JS9BKPIGMLJ

The ASO L4 Lidar Snow Depth 3m UTM Grid data set has been updated from a basic to a standard level of service at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). Increased data usability and usage support is now available, as well as a detailed user guide.

The Aquarius L3 Weekly Polar-Gridded Landscape Freeze/Thaw Data, Version 5 data set is now available from the National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC).

The IceBridge-Related Sander AIRGrav L1B Geolocated Free Air Gravity Anomalies data set is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) from 29 April 2012 to 31 December 2016. This data set contains Greenland and Antarctica gravity measurements taken from the Sander Geophysics AIRGrav airborne gravity system.

The IceBridge ATM L4 Surface Elevation Rate of Change data set has been updated to include measurement comparisons of 2017 data to earlier years over Greenland at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC).

The SnowEx17 Ground Penetrating Radar data set is now available from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC).

This data set contains the results of a ground penetrating radar survey conducted at Grand Mesa, Colorado, between 08 February 2017 and 23 February 2017 as part of the 2017 SnowEx campaign. Data files include two-way travel time, calculated snow depth, and calculated snow water equivalent.

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 June 2018. 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 MEaSUREs Greenland Ice Velocity: Selected Glacier Site Velocity Maps from InSAR, Version 1 data set, available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) has been updated with data through December 2017. 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 1 January 2009.

The AMSR-E/AMSR2 Unified L3 Daily 6.25 km Polar Gridded 89 GHz Brightness Temperatures, Version 1 data set is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This product uses the Japan Aerospace Exploration Agency (JAXA) AMSR2 Level-1R input brightness temperatures that are calibrated (unified) across the JAXA AMSR-E and AMSR2 Level-1R products.

The SnowEx17 Ground-Based UWScat Ku- and X-Band Frequency Modulated Continuous Wave Radar, Version 1 data set has been updated from a basic to a standard level of service at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). Please see our Adding clarity to NSIDC data support with new Level of Service (LoS) model article for more information.

The SnowEx17 Time Series Sonic Snow Depth Measurement Array, Version 1 data set has been updated from a basic to a standard level of service at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). Please see our Adding clarity to NSIDC data support with new Level of Service (LoS) model article for more information.

The DMSP SSM/I-SSMIS Daily Polar Gridded Brightness Temperatures, Version 4 data set, distributed by the National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) is now available through July 05 2018. Access to the data and documentation can be found through the data set landing page.

Data Set DOI: https://doi.org/10.5067/AN9AI8EO7PX0

The National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) is pleased to announce the release of the High Mountain Asia ASCAT Freeze/Thaw/Melt Status, 2009-2017 data set. This data set contains bulk landscape frozen or thawed status over seasonally frozen land as well as snowmelt status over glacierized areas for the High Mountain Asia region.

The SnowEx17 CRREL Differential GNSS Survey data set is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC).

The DMSP SSM/I-SSMIS Pathfinder Daily EASE-Grid Brightness Temperatures, Version 2 data set, distributed by the National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) is now available through July 05 2018. Access to the data and documentation can be found through the data set landing page.

Data Set DOI: https://doi.org/10.5067/3EX2U1DV3434