The MEaSUREs Greenland Annual/Quarterly/Monthly Ice Sheet Velocity Mosaics from SAR and Landsat, Version 2 data sets have been updated. These annual, quarterly and monthly data sets have been reprocessed using a more rigorous culling scheme and a new DEM. The dT parameter, which can be used to assess the temporal skew in the data, is now also available for the annual and monthly data sets. New data have been added so the data sets now span 01 December 2014 – 30 November 2019.

These data sets are part of the NASA Making Earth System Data Records for Use in Research Environments (MEaSUREs) program. They contain annual, quarterly or monthly ice velocity mosaics for the Greenland Ice Sheet derived from SAR data and Landsat imagery.

The data access locations for the quarterly and monthly data sets have changed. Users accessing these data sets through a script will need to update accordingly:

MEaSUREs Greenland Annual Ice Sheet Velocity Mosaics from SAR and Landsat, Version 2
Data access URL: https://n5eil01u.ecs.nsidc.org/MEASURES/NSIDC-0725.002/
Data set DOI: https://doi.org/10.5067/TZZDYD94IMJB

MEaSUREs Greenland Quarterly Ice Sheet Velocity Mosaics from SAR and Landsat, Version 2
New data access URL: https://n5eil01u.ecs.nsidc.org/MEASURES/NSIDC-0727.002/
Data set DOI: https://doi.org/10.5067/3ZMCUIFDYJG4

MEaSUREs Greenland Monthly Ice Sheet Velocity Mosaics from SAR and Landsat, Version 2
New data access URL: https://n5eil01u.ecs.nsidc.org/MEASURES/NSIDC-0731.002/
Data set DOI: https://doi.org/10.5067/11MJZGPBK3ZF

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 revised. Version 3 of this data set was inadvertently released with version 2 data files for the period 01 January 2016 to 31 December 2018. These files were replaced with the correct version on 12 October 2020. If you downloaded files from 01 January 2016 to 31 December 2018, prior to 12 October 2020, we suggest downloading them again so you have the correct version 3 of these data. We apologize for any inconvenience this may have caused.

Data set DOI: https://doi.org/10.5067/RRFY5IW94X5W

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 to a new version and new data access options are also available. New data have been added so the data set now spans 1 March 1985 – 31 December 2019. The data from 2016-2019 have been reprocessed using a new feature tracking algorithm and within this time period there are now additional geoTIFFs for a new parameter, velocity magnitude (vv).

The data access location for this data set has also changed. Users accessing this data set through a script will need to update accordingly. The new data access URL is https://n5eil01u.ecs.nsidc.org/MEASURES/NSIDC-0646.003.

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 maps are generated by tracking visible features between optical image pairs acquired by Landsat 4, 5, 7 and 8 and the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER).

Data set DOI: https://doi.org/10.5067/RRFY5IW94X5W

The MEaSUREs Greenland Image Mosaics from Sentinel-1A and -1B, Version 3 data set, accessible from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) has been updated to a new version and new data access options are also available. The data have been reprocessed using upgraded software and a revised DEM. There are two new parameters, a calibrated sigma0 radar backscatter product and a calibrated and radiometrically terrain-corrected gamma0 radar backscatter product. Both of these products have a spatial resolution of 50 m, while the uncalibrated product, image, has an improved spatial resolution of 25 m. All the products have been simplified, with the mosaics merged into single cloud-optimized geoTIFFs.

The data access location for this data set has also changed. Users accessing this data set through a script will need to update accordingly. The new data access URL is https://n5eil01u.ecs.nsidc.org/MEASURES/NSIDC-0723.003/.

This data set is part of the NASA Making Earth System Data Records for Use in Research Environments (MEaSUREs) program. It consists of 6-day and 12-day 50 m resolution image mosaics of the Greenland coastline and ice sheet periphery. The mosaics are derived from C-band Synthetic Aperture Radar (C-SAR) acquired by the Copernicus Sentinel-1A and -1B imaging satellites starting in January 2015 and now extending through 22 February 2020.

Data set DOI: https://doi.org/10.5067/J9PKP1B9HX6F

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 been updated through 31 December 2019. This data set is an improved, enhanced-resolution, gridded passive microwave Earth System Data Record (ESDR) for monitoring cryospheric and hydrologic time series. Data are derived from the Scanning Multichannel Microwave Radiometer (SMMR) sensor aboard the NIMBUS-7 satellite, the Special Sensor Microwave/Imager (SSM/I) and Special Sensor Microwave Imager/Sounder (SSMIS) sensors aboard various Defense Meteorological Satellite Program satellites, and the Advanced Microwave Scanning Radiometer – Earth Observing System (AMSR-E) sensor aboard the AQUA satellite. Data are available from 25 October 1978 through 31 December 2019.

Data set DOI: https://doi.org/10.5067/MEASURES/CRYOSPHERE/NSIDC-0630.001

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 new data access URL is https://nsidc.org/data/nsidc-0725/versions/1.

This data set contains annual ice velocity mosaics for the Greenland Ice Sheet derived from Synthetic Aperture Radar (SAR) data obtained by the German Space Agency’s TerraSAR-X/TanDEM-X (TSX/TDX) and the European Space Agency’s Copernicus Sentinel-1A and -1B satellites, and from the US Geological Survey’s Landsat 8 optical imagery for years 2015 to 2018.

Data set DOI: https://doi.org/10.5067/OBXCG75U7540

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. This data set, part of the NASA Making Earth System Data Records for Use in Research Environments (MEaSUREs) program, contains high resolution mosaics of radar backscatter for the Greenland Ice Sheet derived from synthetic aperture radar (SAR) data. Both calibrated and uncalibrated mosaics are available for: the winters of 2000-2001, 2005-2006 through 2008-2009, and 2012-2013; and a multiyear composite. Uncalibrated mosaics are available for the winter of 2009-2010. All mosaics are provided at both 100 m and 20 m resolutions.

Data set DOI: https://doi.org/10.5067/6187DQUL3FR5

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 mosaics are derived from C-band Synthetic Aperture Radar (C-SAR) acquired by the Copernicus Sentinel-1A and -1B imaging satellites.

Data set DOI: https://doi.org/10.5067/GPVL3SACPBW4

The following data sets, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), have been updated to version 1.1 to reflect updated filenames in the GDAL virtual format (.vrt) files:

MEaSUREs Greenland Monthly Ice Sheet Velocity Mosaics from SAR and Landsat, Version 1
MEaSUREs Greenland Quarterly Ice Sheet Velocity Mosaics from SAR and Landsat, Version 1

These data sets are produced under the Making Earth System Data Records for Use in Research Environments (MEaSUREs) Program and contain monthly and quarterly ice velocity mosaics for the Greenland Ice Sheet. These data are derived from Synthetic Aperture Radar (SAR) data obtained by the German Aerospace Center’s (DLR) TerraSAR-X/TanDEM-X (TSX/TDX), the European Space Agency’s (ESA) Copernicus Sentinel-1A and -1B satellites, and from US Geological Survey (USGS) Landsat 8 optical imagery.

Data set DOI: https://doi.org/10.5067/OPFQ9QDEUFFY
Data set DOI: https://doi.org/10.5067/1Q1AM4U8Y892

The data access location has changed for the MEaSUREs Greenland Ice Velocity: Selected Glacier Site Velocity Maps from InSAR, Version 1 data set, available through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). Users accessing this data set through a script will need to update accordingly. The new data access URL is https://n5eil01u.ecs.nsidc.org/MEASURES/NSIDC-0481.001/.

Data set DOI: https://doi.org/10.5067/MEASURES/CRYOSPHERE/nsidc-0481.001

The MEaSUREs Greenland Image Mosaics from Sentinel-1A and -1B, Version 2 data set, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been updated with mosaics through May 2019. This data set is produced under the Making Earth System Data Records for Use in Research Environments (MEaSUREs) Program and contains 6-day and 12-day 50 m resolution image mosaics of the Greenland coastline and ice sheet periphery. The mosaics are derived from C-band Synthetic Aperture Radar (C-SAR) acquired by the Copernicus Sentinel-1A and -1B imaging satellites starting in January 2015.

Data set DOI: https://doi.org/10.5067/GPVL3SACPBW4

The MEaSUREs Greenland Ice Velocity: Selected Glacier Site Velocity Maps from Optical Images, Version 2 data set, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been updated to include all available data from 1985 through 2018 for all regions. Additionally, the sensor name abbreviations in the .meta files have changed. This data set consists of mean monthly velocity maps for selected glacier outlet areas from 1 March 1985 through 31 December 2018.

Data set DOI: https://doi.org/10.5067/VM5DZ20MYF5C

The MEaSUREs Greenland Ice Velocity: Selected Glacier Site Velocity Maps from InSAR, Version 1 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 December 2018 and January 2019. 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 InSAR Selected Glacier Site Velocity Maps are produced from the German Aerospace Center’s (DLR) TerraSAR-X/TanDEM-X (TSX/TDX) image pairs.

Data set DOI: https://doi.org/10.5067/MEASURES/CRYOSPHERE/nsidc-0481.001

The MEaSUREs Greenland Monthly Ice Sheet Velocity Mosaics from SAR and Landsat, Version 1 and MEaSUREs Greenland Quarterly Ice Sheet Velocity Mosaics from SAR and Landsat, Version 1 data sets, available through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), have been updated, extending the temporal coverage from December 2014 through November 2018. These data sets are produced under the Making Earth System Data Records for Use in Research Environments (MEaSUREs) Program. The data contain monthly and quarterly (3-month) ice velocity observations for the Greenland Ice Sheet derived from the German Aerospace Center’s (DLR) TerraSAR-X/TanDEM-X (TSX/TDX) products, the European Space Agency’s (ESA) Copernicus Sentinel-1A and -1B satellites, and US Geological Survey (USGS) Landsat 8 optical imagery.

MEaSUREs Greenland Monthly Ice Sheet Velocity Mosaics from SAR and Landsat
DOI: https://doi.org/10.5067/OPFQ9QDEUFFY

MEaSUREs Greenland Quarterly Ice Sheet Velocity Mosaics from SAR and Landsat
DOI: https://doi.org/10.5067/1Q1AM4U8Y892

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 February 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 mosaics are derived from C-band Synthetic Aperture Radar (C-SAR) acquired by the Copernicus Sentinel-1A and -1B imaging satellites.

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 extended through September 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 mosaics are derived from C-band Synthetic Aperture Radar (C-SAR) acquired by the Copernicus Sentinel-1A and -1B imaging satellites.

Data set DOI: https://doi.org/10.5067/GPVL3SACPBW4

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 August 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 mosaics are derived from C-band Synthetic Aperture Radar (C-SAR) acquired by the Copernicus Sentinel-1A and -1B imaging satellites.

Data set DOI: https://doi.org/10.5067/GPVL3SACPBW4

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 mosaics are derived from C-band Synthetic Aperture Radar (C-SAR) acquired by the Copernicus Sentinel-1A and -1B imaging satellites.

Data set DOI: https://doi.org/10.5067/GPVL3SACPBW4

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 May 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 mosaics are derived from C-band Synthetic Aperture Radar (C-SAR) acquired by the Copernicus Sentinel-1A and -1B imaging satellites.

Data set DOI: https://doi.org/10.5067/GPVL3SACPBW4

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 April 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 mosaics are derived from C-band Synthetic Aperture Radar (C-SAR) acquired by the Copernicus Sentinel-1A and -1B imaging satellites.

Data set DOI: https://doi.org/10.5067/GPVL3SACPBW4

New data access options are available for the MEaSUREs Greenland Monthly Image Mosaics from MODIS, 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, and both temporal searching and ordering are now available through NASA Earthdata Search using the Package Options button on the data set Web page.

This data set consists consists of monthly image mosaics of the Greenland coastline and ice sheet periphery constructed from composited MODIS imagery. Each of the monthly mosaics were assembled from between 5 and 56 (typically 10) MODIS scenes selected from the MODIS/Aqua and MODIS/Terra Calibrated Radiances 5-Min L1B Swath 250 m data sets (MYD02QKM and MOD02QKM) for each day-lit month (March – September).

Data set DOI: https://doi.org/10.5067/6L166FFRPCPP

The March 2018 data are now available for the MEaSUREs Greenland Image Mosaics from Sentinel-1A and -1B, Version 2 data set at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC).

This data set is part of the Making Earth System Data Records for Use in Research Environments (MEaSUREs) Program.

Data set DOI: http://dx.doi.org/10.5067/GPVL3SACPBW4

Version 2 of the MEaSUREs MODIS Mosaic of Greenland (MOG) 2005, 2010, and 2015 Image Maps data set is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). Version 2 includes Mosaic of Greenland 2010 and 2015 (MOG2010 and MOG2015) data, in addition to the MOG2005 data.

This data set is funded by NASA’s Making Earth System Data Records for Use in Research Environments (MEaSUREs) Program.

DOI: https://doi.org/10.5067/9ZO79PHOTYE5

New 2017 data is now available for the MEaSUREs Greenland Annual Ice Sheet Velocity Mosaics from SAR and Landsat, Version 1 data set at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC).

This data set is part of the Making Earth System Data Records for Use in Research Environments (MEaSUREs) Program.

Data Set DOI: http://dx.doi.org/10.5067/OBXCG75U7540

New 2017 data is now available for the MEaSUREs Greenland Monthly Ice Sheet Velocity Mosaics from SAR and Landsat 8, Version 1 data set at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC).

This data set is part of the Making Earth System Data Records for Use in Research Environments (MEaSUREs) Program.

Data Set DOI: https://doi.org/10.5067/OPFQ9QDEUFFY

NSIDC DAAC would like to announce a change to data access for the MEaSUREs Antarctic Boundaries for IPY 2007-2009 from Satellite Radar, Version 2. Data access is now solely through our primary archive at: https://n5eil01u.ecs.nsidc.org/MEASURES/NSIDC-0709.002/. File level spatial and temporal metadata have been added to aid in searching and ordering the data through Earthdata Search.

DOI: http://dx.doi.org/10.5067/AXE4121732AD

The MEaSUREs Greenland Monthly Ice Sheet Velocity Mosaics from SAR and Landsat, 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, part of the Making Earth System Data Records for Use in Research Environments (MEaSUREs) Program, contains monthly ice velocity mosaics for the Greenland Ice Sheet derived from Synthetic Aperture Radar (SAR) data obtained by TerraSAR-X/TanDEM-X (TSX/TDX) and Copernicus Sentinel-1A and -1B satellites, and from Landsat 8 optical imagery for years 2015 and 2016.

Data Set DOI: http://dx.doi.org/10.5067/OPFQ9QDEUFFY

The Daily Lake Ice Phenology Time Series Derived from AMSR-E and AMSR2, 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, part of the Making Earth System Data Records for Use in Research Environments (MEaSUREs) Program, provides 5 km ice phenology retrievals describing daily lake ice conditions (ice-on/ice-off) over the Northern Hemisphere. This satellite-based data set allows for rapid assessment and regional monitoring of seasonal ice coverage over large lakes with resulting accuracy suitable for global change studies.

Data Set DOI: 10.5067/HT4NQO7ZJF7M

The MEaSUREs Northern Hemisphere Polar EASE-Grid 2.0 Daily 6 km Land Freeze/Thaw Status from AMSR-E and AMSR2, 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, part of the Making Earth System Data Records for Use in Research Environments (MEaSUREs) Program, augments an existing global 25 km resolution data set, the MEaSUREs Global Record of Daily Landscape Freeze/Thaw Status. It provides daily landscape Freeze/Thaw status at 6 km resolution for the years 2002 to 2016 derived from observations acquired by the Advanced Microwave Scanning Radiometer – Earth Observing System (AMSR-E) and the Advanced Microwave Scanning Radiometer 2 (AMSR2).

Data Set DOI: http://dx.doi.org/10.5067/WM9R9LQ2SA85

NSIDC DAAC would like to announce a change to data access for the MEaSUREs Global Record of Daily Landscape Freeze/Thaw Status, Version 4 data set. Data access is now solely through our primary archive at: https://n5eil01u.ecs.nsidc.org/MEASURES/NSIDC-0477.004/. File level spatial and temporal metadata have been added to aid in searching and ordering the data through Earthdata Search.

DOI: http://dx.doi.org/10.5067/MEASURES/CRYOSPHERE/nsidc-0477.004

NSIDC DAAC would like to announce a change to data access for the MEaSUREs InSAR-Based Ice Velocity of the Amundsen Sea Embayment, Antarctica, Version 1 data set. Data access is now solely through our primary archive at: https://n5eil01u.ecs.nsidc.org/MEASURES/NSIDC-0545.001/. File level spatial and temporal metadata have been added to aid in searching and ordering the data through Earthdata Search.

DOI: http://dx.doi.org/10.5067/MEASURES/CRYOSPHERE/nsidc-0545.001

MEaSUREs Annual Greenland Outlet Glacier Terminus Positions from SAR Mosaics, Version 1 data set is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) as version 1.2.  For this minor version, glaciers were added to two winters:
2006/2007 — glaciers 90 and 91
2008/2009 — glaciers 1-9, 90, and 91

This data set is part of the Making Earth System Data Records for Use in Research Environments (MEaSUREs) Program.

Data Set DOI: http://dx.doi.org/10.5067/DC0MLBOCL3EL

The NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) has added SMMR data to the MEaSUREs Calibrated Enhanced-Resolution Passive Microwave Daily EASE-Grid 2.0 Brightness Temperature ESDR, Version 1 data set.

Also, the F10 data from this data set is now available at version 1.2. The minor change in this version corrects the handling of QC flags to retain more data, eliminating only the flagged data in a given channel and taking care not to eliminate data in other channels.

This data set is part of the Making Earth System Data Records for Use in Research Environments (MEaSUREs) Program.

Data Set DOI: http://dx.doi.org/10.5067/MEASURES/CRYOSPHERE/nsidc-0630.001

The MEaSUREs Greenland Annual Ice Sheet Velocity Mosaics from SAR and Landsat, 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, part of the Making Earth System Data Records for Use in Research Environments (MEaSUREs) Program, contains annual ice velocity mosaics for the Greenland Ice Sheet derived from Synthetic Aperture Radar (SAR) data obtained by TerraSAR-X/TanDEM-X (TSX/TDX) and Copernicus Sentinel-1A and -1B satellites, and from Landsat 8 optical imagery for years 2015 and 2016.

Data Set DOI: http://dx.doi.org/10.5067/OBXCG75U7540

The F14 data from the MEaSUREs Calibrated Enhanced-Resolution Passive Microwave Daily EASE-Grid 2.0 Brightness Temperature ESDR, Version 1 data set is now available at version 1.2.  The minor change in this version corrects the handling of QC flags to retain more data, eliminating only the flagged data in a given channel and taking care not to eliminate data in other channels.

This data set is part of the Making Earth System Data Records for Use in Research Environments (MEaSUREs) Program.

Data Set DOI: http://dx.doi.org/10.5067/MEASURES/CRYOSPHERE/nsidc-0630.001

The F15 data from the MEaSUREs Calibrated Enhanced-Resolution Passive Microwave Daily EASE-Grid 2.0 Brightness Temperature ESDR, Version 1 data set is now available at version 1.2.  The minor change in this version corrects the handling of QC flags to retain more data, eliminating only the flagged data in a given channel and taking care not to eliminate data in other channels.

This data set is part of the Making Earth System Data Records for Use in Research Environments (MEaSUREs) Program.

Data Set DOI: http://dx.doi.org/10.5067/MEASURES/CRYOSPHERE/nsidc-0630.001

Version 4 of the MEaSUREs Global Record of Daily Landscape Freeze/Thaw Status data set is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). New for this version:

• the record now spans 1979 to 2016;
• the freeze/thaw domain encompasses all land areas affected by seasonal freezing, including urban, snow-ice dominant, open water body dominant, and barren land;
• freeze/thaw status is determined with a modified seasonal threshold algorithm, calibrated annually for all pixels using daily surface air temperature records;
• new bit flags identify cells (and days) with missing/interpolated Tb, large open water bodies, complex terrain, and large precipitation events.

This data set is funded by NASA’s Making Earth System Data Records for Use in Research Environments (MEaSUREs) Program.

DOI: https://dx.doi.org/10.5067/MEASURES/CRYOSPHERE/nsidc-0477.004

NSIDC would like to announce a change to data access for the MEaSUREs InSAR-Based Antarctica Ice Velocity Map, Version 2 data set. Data access is now solely through our primary portal at: https://n5eil01u.ecs.nsidc.org/MEASURES/NSIDC-0484.002/. File level spatial and temporal metadata have been added to aid in searching the data.

DOI: http://dx.doi.org/10.5067/D7GK8F5J8M8R

MEaSUREs Annual Greenland Outlet Glacier Terminus Positions from SAR Mosaics, Version 1 data set is now available at version 1.1.  The minor changes in this version include:

• Added data for winters of 2014/2015, 2015/16, 2016/17
• Added new parameter attributes for the new data
• Added 29 new glaciers
• Provided a new GlacierID file with added glaciers and updated attributes

This data set is part of the Making Earth System Data Records for Use in Research Environments (MEaSUREs) Program.

Data Set DOI: http://dx.doi.org/10.5067/DC0MLBOCL3EL

The F11 data from the MEaSUREs Calibrated Enhanced-Resolution Passive Microwave Daily EASE-Grid 2.0 Brightness Temperature ESDR, Version 1 data set is now available at version 1.2.  The minor change in this version corrects the handling of QC flags to retain more data, eliminating only the flagged data in a given channel and taking care not to eliminate data in other channels.

This data set is part of the Making Earth System Data Records for Use in Research Environments (MEaSUREs) Program.

Data Set DOI: http://dx.doi.org/10.5067/MEASURES/CRYOSPHERE/nsidc-0630.001

The MEaSUREs Greenland Monthly Image Mosaics from MODIS, 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, part of the Making Earth System Data Records for Use in Research Environments (MEaSUREs) Program, provides monthly image mosaics of the Greenland coastline and ice sheet periphery. The image mosaics are constructed from composited MODIS imagery, acquired each month between March 2008 to September 2016.

Data Set DOI: http://dx.doi.org/10.5067/6L166FFRPCPP

The F08 data from the MEaSUREs Calibrated Enhanced-Resolution Passive Microwave Daily EASE-Grid 2.0 Brightness Temperature ESDR, Version 1 data set is now available at version 1.2.  The minor change in this version corrects the handling of QC flags to retain more data, eliminating only the flagged data in a given channel and taking care not to eliminate data in other channels.

This data set is part of the Making Earth System Data Records for Use in Research Environments (MEaSUREs) Program.

Data Set DOI: http://dx.doi.org/10.5067/MEASURES/CRYOSPHERE/nsidc-0630.001

MEaSUREs has added SSMIS data from the F16 platform to the MEaSUREs Calibrated Enhanced-Resolution Passive Microwave Daily EASE-Grid 2.0 Brightness Temperature ESDR, Version 1 data set available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC).

This data set is part of the Making Earth System Data Records for Use in Research Environments (MEaSUREs) Program.

Data Set DOI: http://dx.doi.org/10.5067/MEASURES/CRYOSPHERE/nsidc-0630.001

NSIDC would like to announce a change to data access for the MEaSUREs Greenland Ice Velocity: Selected Glacier Site Velocity Maps from InSAR, Version 1.2 data set. Data access is now solely through our primary portal at: https://n5eil01u.ecs.nsidc.org/MEASURES/NSIDC-0481.001/. File level spatial and temporal metadata have been added to aid in searching the data.<

DOI: http://dx.doi.org/10.5067/MEASURES/CRYOSPHERE/nsidc-0481.001

The MEaSUREs Greenland Ice Velocity: Selected Glacier Site Velocity Maps from InSAR data set at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) has been updated with velocity maps for 2016. This release, Version 1.2, includes new browse images, metadata files, and more descriptive file names, and fills in some missing 2015 files.

These data are generated through a grant from the NASA Making Earth System Data Records for Use in Research Environments (MEaSUREs) Program.

Data Set DOI: http://dx.doi.org/10.5067/MEASURES/CRYOSPHERE/nsidc-0481.001

MEaSUREs has added SSM/I data from the F14 platform to the MEaSUREs Calibrated Enhanced-Resolution Passive Microwave Daily EASE-Grid 2.0 Brightness Temperature ESDR data set available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). The temporal coverage is 9 July 1987 through 4 October 2011. This data set is part of the Making Earth System Data Records for Use in Research Environments (MEaSUREs) Program.

Data Set DOI: http://dx.doi.org/10.5067/MEASURES/CRYOSPHERE/nsidc-0630.001

MEaSUREs has added SSM/I data from the F11 platform to the MEaSUREs Calibrated Enhanced-Resolution Passive Microwave Daily EASE-Grid 2.0 Brightness Temperature ESDR data set available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). The temporal coverage is now 9 July 1987 through 4 October 2011. This data set is part of the Making Earth System Data Records for Use in Research Environments (MEaSUREs) Program.

Data Set DOI: http://dx.doi.org/10.5067/MEASURES/CRYOSPHERE/nsidc-0630.001

MEaSUREs has added SSM/I data from the F10 platform to the MEaSUREs Calibrated Enhanced-Resolution Passive Microwave Daily EASE-Grid 2.0 Brightness Temperature ESDR data set available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). The temporal coverage is now 9 July 1987 through 4 October 2011. This data set is part of the Making Earth System Data Records for Use in Research Environments (MEaSUREs) Program.

Data Set DOI: http://dx.doi.org/10.5067/MEASURES/CRYOSPHERE/nsidc-0630.001

The MEaSUREs Greenland Ice Mapping Project (GIMP) Digital Elevation Model from GeoEye and WorldView Imagery 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, consists of an enhanced resolution digital elevation model (DEM) for the Greenland Ice Sheet.

Data Set DOI: http://dx.doi.org/10.5067/H0KUYVF53Q8M

The MEaSUREs Greenland Ice Mapping Project (GIMP) 2000 Image Mosaic 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 a complete 15 m resolution image mosaic of the Greenland ice sheet derived from Landsat ETM+ and RADARSAT imagery from the years 1999 to 2002.

Data set DOI: http://dx.doi.org/10.5067/4RNTRRE4JCYD

The MEaSUREs Greenland Ice Sheet Velocity Map from InSAR Data, Version 2 data set, available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) now includes 2012-2013 data.

Data Set DOI: http://dx.doi.org/10.5067/OC7B04ZM9G6Q

The MEaSUREs Calibrated Enhanced-Resolution Passive Microwave Daily EASE-Grid 2.0 Brightness Temperature ESDR 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, consists of an improved, enhanced-resolution, gridded passive microwave Earth System Data Record (ESDR) for monitoring cryospheric and hydrologic time series from SMMR, SSM/I-SSMIS and AMSR-E.

Data Set DOI: http://dx.doi.org/10.5067/MEASURES/CRYOSPHERE/nsidc-0630.001

Version 2 of Antarctic Grounding Line from Differential Satellite Radar Interferometry 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 22 years of comprehensive high-resolution mapping of grounding lines in Antarctica, derived using differential satellite synthetic aperture radar interferometry (DInSAR) data.

Data Set DOI: http://dx.doi.org/10.5067/IKBWW4RYHF1Q

The Canadian Meteorological Centre (CMC) Daily Snow Depth Analysis Data data set at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) has been updated with snow depth analysis data for 2015.

Data Set doi: http://dx.doi.org/10.5067/W9FOYWH0EQZ3.

The NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) has released Version 2 of MEaSUREs Greenland Ice Sheet Velocity Map from InSAR Data. This update offers users a new winter velocity map for 2009/2010 plus processing enhancements that include:

• Additional quality control screening to remove bad data points;
• Improved baseline fits that enhance consistency in the interior;
• Updated error estimates that better represent the average behavior of the data;
• The addition of ALOS fine-beam data to improve coverage

The Greenland Ice Mapping Project (GIMP) Digital Elevation Model is now available from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set, funded by NASA’s Making Earth System Data Records for Use in Research Environments (MEaSUREs) Program, consists of an enhanced resolution digital elevation model (DEM) for the Greenland Ice Sheet. The DEM was constructed by combining ASTER and SPOT 5 DEMs over the ice sheet periphery and margin with AVHRR photoclinometry for the interior and far north, and calibrating the data to mean elevations obtained by the Geoscience Laser Altimeter System (GLAS) that flew on the Ice, Cloud, and land Elevation (ICESat) satellite.

For more information and to obtain the DEM, visit MEaSURES Greenland Ice Mapping Project (GIMP) Digital Elevation Model (DOI: 10.5194/tc-8-1509-2014).

The Making Earth System Data Records for Use in Research Environments (MEaSUREs) Program, at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), is pleased to announce the release of a new data set.

MEaSUREs Greenland Ice Sheet Mosaics from SAR Data consists of the following high-resolution mosaics derived from synthetic aperture radar (SAR): uncalibrated and sigma naught calibrated C-band mosaics from RADARSAT-1 for the winters of 2000–2001, 2005–2006 through 2008–2009, and 2012–2013; and uncalibrated ALOS Phased Array type L-band Synthetic Aperture Radar (PALSAR) mosaics for the winter of 2009–2010. In addition, a RADARSAT-1 multiyear composite is available for 2000-2009. All mosaics are provided at both 100 m and 20 m resolutions.

Data Set DOI: http://dx.doi.org/10.5067/6187DQUL3FR5

The Making Earth System Data Records for Use in Research Environments (MEaSUREs) Program, at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) is pleased to announce the release of a new data set, MEaSUREs Northern Hemisphere State of Cryosphere Weekly 100km EASE-Grid 2.0. This data set reports the location of Northern Hemisphere snow cover and sea ice extent, the status of melt onset across Greenland and Arctic sea ice, and the level of agreement between snow cover maps derived from two different sources.

Data Set DOI: http://dx.doi.org/10.5067/MEASURES/CRYOSPHERE/nsidc-0535.001

The Making Earth System Data Records for Use in Research Environments (MEaSUREs) Program, at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), is pleased to announce the release of a new data set: MEaSUREs Northern Hemisphere Terrestrial Snow Cover Extent Weekly 100km EASE-Grid 2.0. This data set offers users weekly 100 km snow cover maps for the Northern Hemisphere, derived from the NOAA/NCDC Northern Hemisphere Snow Cover Extent Climate Data Record and satellite passive microwave brightness temperatures.

Data Set DOI: http://dx.doi.org/10.5067/MEASURES/CRYOSPHERE/nsidc-0531.001

The MEaSUREs Greenland Surface Melt Daily 25km EASE-Grid 2.0 data set is now 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, offers users a 25 km daily record of surface/near-surface melting on the Greenland Ice Sheet from 2 January 1979 to 31 December 2012.

To access the data and documentation, visit the data set Web page at http://nsidc.org/data/nsidc-0533.

The NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) has released Version 3 of the MEaSUREs Global Record of Daily Landscape Freeze/Thaw Status data set. This release, part of NASA’s Making Earth System Data Records for Use in Research Environments (MEaSUREs) Program, extends the SMMR-SSM/I-SSMIS freeze/thaw record through 2012, corrects land/ocean mask and freeze/thaw misclassification errors over ocean dominated grid cells, and applies a revised methodology to produce data annual quality maps.

Visit the MEaSUREs Global Record of Daily Landscape Freeze/Thaw Status, Version 3 catalog page for more information.

NSIDC has a new Arctic sea ice data set from NASA’s Making Earth System Data Records for Use in Research Environments (MEaSUREs) program: MEaSUREs Arctic Sea Ice Characterization 25 km EASE-Grid 2.0.

This data set, derived from passive microwave brightness temperatures, offers users daily Arctic sea ice locations, sea ice age, day of melt onset, and status of melt onset for the years 1979 through 2012. The data are gridded in the 25 km Equal-Area Scalable Earth Grid (EASE-Grid) 2.0 and provided as netCDF files.

To get the data visit http://nsidc.org/data/nsidc-0532/. Complete documentation is available at http://www.nsidc.org/data/docs/measures/nsidc-0532/index.html.

Investigators Eric Rignot, Jeremie Mouginot, and Bernd Scheuchl have added a 450 m resolution map to their “MEaSUREs InSAR-Based Antarctica Ice Velocity Map” data set.  NSIDC offers these data as part of NASA’s Making Earth System Data Records for Use in Research Environments (MEaSUREs) program.

Visit the data set Web page for more information and to obtain the data.

NSIDC has released an updated version (Version 2) of the “MEaSUREs Global Record of Daily Landscape Freeze/Thaw Status” data set led by Principal Investigator, John Kimball, as a part of the NASA Making Earth System Data Records for Use in Research Environments (MEaSUREs) program. The updated version features an extended freeze/thaw record spanning 1979 to 2010, derived from both the Scanning Multichannel Microwave Radiometer (SMMR) and Special Sensor Microwave/Imager (SSM/I) instruments. Also included in this version are new data for the years 2002 to 2011 derived from the Advanced Microwave Scanning Radiometer – Earth Observing System (AMSR-E) instrument and the addition of data in GeoTIFF format.

For additional information, see the MEaSUREs Global Record of Daily Landscape Freeze/Thaw Status, Version 2 Web page. If you have questions, please contact NSIDC’s User Services Office at nsidc@nsidc.org.

NSIDC is pleased to announce the release of two Antarctic data sets, part of the NASA Making Earth System Data Records for Use in Research Environments (MEaSUREs) program. The MEaSUREs program aims to develop consistent global and continent scale data records related to earth science, or Earth System Data Records (ESDRs).

• MEaSUREs InSAR-Based Antarctica Velocity Map (nsidc-0484) provides the first comprehensive, high-resolution, digital mosaic of ice motion in Antarctica. The data set was assembled from multiple satellite interferometric synthetic-aperture radar data, acquired during the International Polar Year 2007 to 2009.
• MEaSUREs Antarctic Grounding Line from Differential Satellite Radar Interferometry (nsidc-0498) provides a high-resolution map of grounding lines in Antarctica, derived using 17 years of differential satellite synthetic aperture.