Data Sets

The following table shows the current ice sheet elevation products available from NSIDC. To obtain documentation for a specific product or access the data, click on the data set title in the table.

Alaska

Title Spatial Coverage Temporal Coverage Parameter(s)

High-Resolution Radar Imagery, Digital Elevation Models, and Related GIS Layers for Barrow, Alaska, USA, Version 1

Dataset Summary

This product set contains high-resolution Interferometric Synthetic Aperture Radar (IFSAR) imagery and geospatial data for the Barrow Peninsula (155.39 - 157.48 deg W, 70.86 - 71.47 deg N) and Barrow Triangle (156.13 - 157.08 deg W, 71.14 - 71.42 deg N), for use in Geographic Information Systems (GIS) and remote sensing software. The primary IFSAR data sets were acquired by Intermap Technologies from 27 to 29 July 2002, and consist of Orthorectified Radar Imagery (ORRI), a Digital Surface Model (DSM), and a Digital Terrain Model (DTM).

Derived data layers include aspect, shaded relief, and slope-angle grids (floating-point binary and ArcInfo grid format), as well as a vector layer...

Details

N: 71.47278, S: 70.86246, E: -155.39483, W: -157.47633

2002/07/27 to 2002/07/29 Contours, Radar Imagery, Radar Reflectivity, Terrain Elevation, Topographical Relief, Topographic Effects

Reduced-Resolution Radar Imagery, Digital Elevation Models, and Related GIS Layers for Barrow, Alaska, USA, Version 1

Dataset Summary

This product set contains reduced-resolution Interferometric Synthetic Aperture Radar (IFSAR) imagery and geospatial data for the Barrow Peninsula (155.39 - 157.48 deg W, 70.86 - 71.47 deg N), for use in Geographic Information Systems (GIS) and remote sensing software. The primary IFSAR data sets were acquired by Intermap Technologies from 27 to 29 July 2002, and consist of an Orthorectified Radar Imagery (ORRI), a Digital Surface Model (DSM), and a Digital Terrain Model (DTM).

Derived data layers include aspect, shaded relief, and slope-angle grids (floating-point binary format), as well as a vector layer of contour lines (ESRI Shapefile format). Also available are accessory...

Details

N: 71.47278, S: 70.86246, E: -155.39483, W: -157.47633

2002/07/27 to 2002/07/29 Contours, Radar Imagery, Radar Reflectivity, Terrain Elevation, Topographical Relief, Topographic Effects

Antarctica

Title Spatial Coverage Temporal Coverage Parameter(s)

Antarctic 5-km Digital Elevation Model from ERS-1 Altimetry, Version

Dataset Summary

This data set provides a digital elevation model (DEM) for Antarctica to 81.5 degrees south latitude, at a resolution of 5 km. Approximately twenty million data points were used to generate this data set. Data points were derived from ERS-1 radar altimetry during the geodetic phase from March 1994 to May 1995. The improved density in coverage and resolution, compared with past satellite altimetry missions, provides better detection of topographic detail such as surface undulations, ice streams, grounding zones, and interstream ridges. DEM data are in a polar stereographic projection with the origin at the south pole, and are referenced to the OSU91A geoid.

The ERS-1 satellite...

Details

N: -65, S: -81, E: 180, W: -180

1994/03/01 to 1995/05/31 Glacier Elevation/Ice Sheet Elevation, Glacier Topography/Ice Sheet Topography, Ice Sheets, Surface Roughness, Topographical Relief

GEOSAT Radar Altimeter DEM Atlas of Antarctica North of 72.1 degrees South, Version

Dataset Summary

The Antarctic atlas consists of 28 digital elevation maps which cover
all of Antarctica north of 72.1 degrees south at a resolution of
three kilometers. Each map contains surface elevations and
coordinates for one atlas page covering 16 degrees of longitude. Data
were acquired by the Geodetic Satellite (GEOSAT) Geodetic Mission
(GM) from March 1985 through September 1986 and are available in both
Universal Transverse Mercator (UTM) coordinates, and in latitude and longitude coordinates.

Data were mapped using the UTM projection in atlas form to decrease
the distortion that usually occurs at the poles. Many features of the
Antarctic...

Details

N: -65, S: -72, E: 180, W: -180

1985/04/01 to 1986/09/30 Contours, Glacier Elevation/Ice Sheet Elevation, Glaciers, Glacier Topography/Ice Sheet Topography, Ice Sheets, Landforms, Surface Roughness, Terrain Elevation, Topographical Relief

GLAS/ICESat 500 m Laser Altimetry Digital Elevation Model of Antarctica, Version

Dataset Summary

The Geoscience Laser Altimeter System (GLAS) instrument on the Ice, Cloud, and land Elevation Satellite (ICESat) provides global measurements of elevation, and repeats measurements along nearly-identical tracks; its primary mission is to measure changes in ice volume (mass balance) over time. This digital elevation model (DEM) of Antarctica is derived from GLAS/ICESat laser altimetry profile data and provides new surface elevation grids of the ice sheets and coastal areas, with greater latitudinal extent and fewer slope-related effects than radar altimetry.

This DEM is generated from the first seven operational periods (from February 2003 through June 2005) of the GLAS instrument...

Details

N: -63, S: -86, E: 180, W: -180

2003/02/01 to 2005/06/30 Glacier Elevation/Ice Sheet Elevation

Ice Thickness and Surface Elevation, Southeastern Ross Embayment, West Antarctica, Version

Dataset Summary

Ice surface elevation and ice thickness data are available for a
portion of the West Antarctic Ice Sheet. The investigators utilized a
laser altimeter and ice-penetrating radar mounted to a Twin Otter
aircraft to survey the ice sheet. Ice surface elevations and ice
thickness data, derived from laser altimetry and radar sounding
results, are available in ASCII format via ftp.

These data are a result of the Corridor Aerogeophysics of the
Southeastern Ross Transect Zone (CASERTZ) experiments of the 1990s.
The CASERTZ geophysical surveys were aimed at understanding geological
controls on ice streams of the West Antarctic Ice Sheet,...

Details

N: -80, S: -84, E: -104, W: -134

1991/12/27 to 1996/01/02 Glacier Elevation/Ice Sheet Elevation, Glacier Thickness/Ice Sheet Thickness, Ice Depth/Thickness, Ice Sheets

MODIS Mosaic of Antarctica 2003-2004 (MOA2004) Image Map, Version 1

Dataset Summary

The MODIS Mosaic of Antarctica 2003-2004 (MOA2004) Image Map consists of two cloud-free digital image maps that show mean surface morphology and a quantitative measure of optical snow grain size on the Antarctic continent and surrounding islands. The 260 orbit swaths used to create the 2003/2004 MOA Surface Morphology Image Map and the 2003/2004 MOA Grain Size Image Map were acquired 20 November 2003 through 29 February 2004 by the Moderate Resolution Imaging Spectroradiometer (MODIS) instruments on board the NASA EOS Aqua and Terra satellites. The 122 orbit swaths used to create the 2003 MOA Grain Size Image Map were acquired 1 November 2003 through 17 December 2003. Vector data sets...

Details

N: -60, S: -90, E: 180, W: -180

2003/11/20 to 2004/02/29, 2003/11/01 to 2003/12/17 Firn, Ice Sheets

Radarsat Antarctic Mapping Project Digital Elevation Model Version 2, Version

Dataset Summary

The high-resolution Radarsat Antarctic Mapping Project (RAMP) Digital Elevation Model (DEM) combines topographic data from a variety of sources to provide consistent coverage of all of Antarctica. Version 2 improves upon the original version by incorporating new topographic data, error corrections, extended coverage, and other modifications.

The DEM incorporates topographic data from satellite radar altimetry, airborne
radar surveys, the recently-updated Antarctic Digital Database (version 2), and
large-scale topographic maps from the U.S. Geological Survey (USGS) and the
Australian Antarctic Division. Data were collected between the 1940s and
present, with...

Details

N: -60, S: -90, E: 180, W: -180

1940/01/01 to 1999/01/01 Contours, Glacier Elevation/Ice Sheet Elevation, Glaciers, Glacier Topography/Ice Sheet Topography, Ice Sheets, Landforms, Topographical Relief

Roosevelt Island Bedrock and Surface Elevations, Version

Dataset Summary

This data set consists of bedrock and surface elevation readings taken by ground penetrating radar and Global Positioning System (GPS) on Roosevelt Island, an ice dome within the Ross Ice Shelf. Locations were validated by GPS readings of poles set in the surface snow. The data was collected between November and December, 1997.

Data are available via ftp, and are provided in a text file with an accompanying file that provides GPS locations. Surface and bedrock elevations are given in meters above WGS84.

Details

N: -79.3539, S: -79.5906, E: -159.8077, W: -161.5307

1997/11/11 to 1997/12/12 Glacier Elevation/Ice Sheet Elevation, Glacier Topography/Ice Sheet Topography, Ice Depth/Thickness, Ice Sheets, Landforms, Terrain Elevation, Topographical Relief, Topographic Effects

Seasat and GEOSAT Altimetry for the Antarctic and Greenland Ice Sheets, Version

Dataset Summary

Note: This data set is now on FTP so references to CD-ROM are historic and no longer applicable.

The Ice Altimetry System (IAS) data seet contains surface elevations of
the Antarctic and Greenland ice sheets derived from Seasat and GEOSAT
radar altimetry data. The Seasat data were collected for a continuous
90 days in 1978, at latitudes between 72 degrees South and 72 degrees
North. GEOSAT was launched in 1985 and placed in a nearly identical
orbit to Seasat, also at latitudes of between 72 degrees South and 72
degrees North. The orbit was designed to provide high-density
measurements over the Earth's surface, at a maximum grid spacing of...

Details

N: 72, S: 60, E: -20, W: -60

1978/06/01 to 1986/09/30 Glacier Elevation/Ice Sheet Elevation, Ice Sheets

Surface Elevation and Ice Thickness, Western Marie Byrd Land, Antarctica, Version

Dataset Summary

This data set provides surface elevation and ice thickness data for a portion of the Marie Byrd Land sector of West Antarctica, including the Ford Ranges, the Sulzberger Ice Shelf, much of the Edward VII Peninsula, and the Shirase Coast region of the eastern Ross Ice Shelf. The investigators used radar sounding and laser altimetry from a Twin Otter aircraft flying at varying altitudes, at least 300 m above the surface, at an air speed of about 130 knots. Surveys were accomplished with 64 flights in December 1998 and January 1999. This research was funded by the National Science Foundation (NSF) contract NSF OPP 9615281.

Details

N: -71, S: -80, E: -136, W: -157

1998/12/25 to 1998/12/27 Glacier Elevation/Ice Sheet Elevation, Ice Depth/Thickness, Ice Extent, Ice Growth/Melt, Ice Sheets, Terrain Elevation

Antarctic 1 km Digital Elevation Model (DEM) from Combined ERS-1 Radar and ICESat Laser Satellite Altimetry, Version 1

Dataset Summary

This data set provides a 1 km resolution Digital Elevation Model (DEM) of Antarctica. The DEM combines measurements from the European Remote Sensing Satellite-1 (ERS-1) Satellite Radar Altimeter (SRA) and the Ice, Cloud, and land Elevation Satellite (ICESat) Geosciences Laser Altimeter System (GLAS). The ERS-1 data are from two long repeat cycles of 168 days initiated in March 1994, and the GLAS data are from 20 February 2003 through 21 March 2008. The data set is approximately 240 MB comprised of two gridded binary files and two Environment for Visualizing Images (ENVI) header files viewable using ENVI or other similar software packages. The data are available via FTP.

Details

N: -60, S: -86, E: 180, W: -180

2003/02/20 to 2008/03/21, 1994/03/01 to 1995/01/31 Coastal Elevation, Glacier Elevation/Ice Sheet Elevation, Terrain Elevation

Antarctic Peninsula 100 m Digital Elevation Model Derived from ASTER GDEM, Version 1

Dataset Summary

This data set provides a 100 meter resolution surface topography Digital Elevation Model (DEM) of the Antarctic Peninsula. The DEM is based on Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) Global Digital Elevation Model (GDEM) data. The original GDEM data are accurate for coastal regions of the Antarctic Peninsula, but contain large errors on snow- and ice-covered regions. This data set was developed using a new method specifically for smoothing erroneous regions, and has a mean elevation difference of - 4 meters (±25 m Root Mean Square Error [RMSE]) when compared to data from the NASA Ice,
Cloud,and Land Elevation Satellite (ICESat), although elevation...

Details

N: -63, S: -70, E: -55, W: -70

2000/01/01 to 2009/12/31 Coastal Elevation, Glacier Elevation/Ice Sheet Elevation, Terrain Elevation

Greenland

Title Spatial Coverage Temporal Coverage Parameter(s)

Digital SAR Mosaic and Elevation Map of the Greenland Ice Sheet, Version 1

Dataset Summary

The Digital SAR Mosaic and Elevation Map of the Greenland Ice Sheet CD-ROM combines the most detailed synthetic aperture radar (SAR) image mosaic available with the best current digital elevation model. The mosaic image shows both the location of the ice edge and the distribution of melt-related 'scatterers' on the surface. These scatterers include ice lenses and complex layered structure in the percolation zone and bare ice of the ablation zone. Other melt-related features that can be seen include lake and surface meltwater stream channels at lower elevations, as well as ice-marginal lakes.

This characterization of the ice sheet provides a reference against which future change...

Details

N: 84, S: 60, E: -10, W: -73

1991/01/01 to 1995/12/31, 1992/08/02 to 1992/09/09 Glacier Elevation/Ice Sheet Elevation, Glacier Topography/Ice Sheet Topography, Ice Edges, Ice Sheets, Radar Backscatter, Radar Cross-section, Radar Imagery, Radar Reflectivity, Return Power

Elevation Change of the Southern Greenland Ice Sheet from 1978-88, Version

Dataset Summary

Southern Greenland ice sheet elevation change estimates are derived from SEASAT and GEOSAT radar altimetry data from 1978 to 1988. Data are confined to 61-72 deg N, 30-50 deg W, above 1700 m elevation. The addition of GEOSAT Geodetic Mission (GM) data results in twice as many crossover points and 50% greater coverage than previous studies. Coverage above 2000 m elevation is improved to 90%, and about 75% of the area between 1700 m and 2000 m is now covered. Data are in ASCII text format, available via FTP, and consist of elevation change rate (dH/dt, cm/year) and corresponding error estimates in 50 km grid cells.

Details

N: 72, S: 61, E: -30, W: -52

1978/01/01 to 1988/12/31 Glacier Elevation/Ice Sheet Elevation, Ice Sheets

GLAS/ICESat 1 km Laser Altimetry Digital Elevation Model of Greenland, Version

Dataset Summary

The Geoscience Laser Altimeter System (GLAS) instrument on the Ice, Cloud, and land Elevation Satellite (ICESat) provides global measurements of elevation, and repeats measurements along nearly-identical tracks; its primary mission is to measure changes in ice volume (mass balance) over time. This digital elevation model (DEM) of Greenland is derived from GLAS/ICESat laser altimetry profile data and provides new surface elevation grids of the ice sheets and coastal areas, with greater latitudinal extent and fewer slope-related effects than radar altimetry.

This DEM is generated from the first seven operational periods (from February 2003 through June 2005) of the GLAS instrument....

Details

N: 83, S: 60, E: -11, W: -73

2003/02/01 to 2005/06/30 Glacier Elevation/Ice Sheet Elevation

Greenland 5 km DEM, Ice Thickness, and Bedrock Elevation Grids, Version 1

Dataset Summary

A Digital Elevation Model (DEM), ice thickness grid, and bedrock elevation grid of Greenland acquired as part of the PARCA program are available in ASCII text format at a 5 km grid spacing in a polar stereographic projection. DEM data are a combination of ERS-1 and Geosat satellite radar altimetry data, Airborne Topographic Mapper (ATM) data, and photogrammetric digital height data. Ice thickness data are based on approximately 700,000 data points collected in the 1990s from a University of Kansas airborne ice penetrating radar (IPR). Nearly 30,000 data points were collected in the 1970s from a Technical University of Denmark (TUD) airborne echo sounder. Bamber subtracted the ice...

Details

N: 84, S: 60, E: -15, W: -72

1970/01/01 to 1970/12/01, 1993/01/01 to 1999/12/31 Glacier Elevation/Ice Sheet Elevation, Glacier Thickness/Ice Sheet Thickness, Glacier Topography/Ice Sheet Topography, Ice Depth/Thickness, Ice Sheets, Landforms, Topographical Relief, Topographic Effects

Seasat and GEOSAT Altimetry for the Antarctic and Greenland Ice Sheets, Version

Dataset Summary

Note: This data set is now on FTP so references to CD-ROM are historic and no longer applicable.

The Ice Altimetry System (IAS) data seet contains surface elevations of
the Antarctic and Greenland ice sheets derived from Seasat and GEOSAT
radar altimetry data. The Seasat data were collected for a continuous
90 days in 1978, at latitudes between 72 degrees South and 72 degrees
North. GEOSAT was launched in 1985 and placed in a nearly identical
orbit to Seasat, also at latitudes of between 72 degrees South and 72
degrees North. The orbit was designed to provide high-density
measurements over the Earth's surface, at a maximum grid spacing of...

Details

N: 72, S: 60, E: -20, W: -60

1978/06/01 to 1986/09/30 Glacier Elevation/Ice Sheet Elevation, Ice Sheets

Global

Title Spatial Coverage Temporal Coverage Parameter(s)

GLAS/ICESat L1A Global Altimetry Data, Version 33

Dataset Summary

The Geoscience Laser Altimeter System (GLAS) instrument on the Ice, Cloud, and Land Elevation Satellite (ICESat) provides global measurements of polar ice sheet elevation to discern changes in ice volume (mass balance) over time. Secondary objectives of GLAS are to measure sea ice roughness and thickness, cloud and atmospheric properties, land topography, vegetation canopy heights, ocean surface topography, and surface reflectivity.

GLAS has a 1064 nm laser channel for surface altimetry and dense cloud heights, and a 532 nm lidar channel for the vertical distribution of clouds and aerosols.

Level-1A altimetry data (GLA01) include the transmitted and received waveform from...

Details

N: 86, S: -86, E: 180, W: -180

2003/02/20 to 2009/10/11 Sensor Counts

GLAS/ICESat L2 Sea Ice Altimetry Data, Version 34

Dataset Summary

The Geoscience Laser Altimeter System (GLAS) instrument on the Ice, Cloud, and Land Elevation Satellite (ICESat) provides global measurements of polar ice sheet elevation to discern changes in ice volume (mass balance) over time. Secondary objectives of GLAS are to measure sea ice roughness and thickness, cloud and atmospheric properties, land topography, vegetation canopy heights, ocean surface topography, and surface reflectivity.

GLAS has a 1064 nm laser channel for surface altimetry and dense cloud heights, and a 532 nm lidar channel for the vertical distribution of clouds and aerosols.

This level-2 altimetry product (GLA13) provides surface elevations for sea ice....

Details

N: 86, S: -86, E: 180, W: -180

2003/02/20 to 2009/10/11 Ice Roughness, Reflectance, Sea Ice Elevation