NSIDC-0052
Digital SAR Mosaic and Elevation Map of the Greenland Ice Sheet
Fahnestock, Mark, Simon Ekholm, Kenneth Knowles, Ron Kwok, Ted Scambos
Digital SAR Mosaic and Elevation Map of the Greenland Ice Sheet
1997-01-01
Boulder, Colorado USA
NSIDC: National Snow and Ice Data Center
http://nsidc.org/data/nsidc-0052.html
Technical Contact
NSIDC
User Services
nsidc@nsidc.org
1 303 492-6199 x
1 303 492-2468 x
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
Boulder
CO
80309-0449
USA
Investigator
Mark
Fahnestock
mark.fahnestock@unh.edu
1 603 862-0322
University of New Hampshire
Institute for the Study of Earth, Oceans, and Space
University of New Hampshire
39 College Road
Durham
NH
03824-3525
USA
Investigator
Simon
Ekholm
Kort-og Matrikelstyrelsen
(KMS, National Survey and Cadastre)
Copenhagen
Denmark
Investigator
Kenneth
Knowles
National Snow and Ice Data Center
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
Boulder
CO
80309-0449
USA
Investigator
Ron
Kwok
Jet Propulsion Laboratory (JPL)
California Institute of Technology
Pasadena
CA
USA
Investigator
Ted
Scambos
scambos@nsidc.org
University of Colorado
Cooperative Institute for Research in Environmental Science
National Snow and Ice Data Center
CIRES, 449 UCB
Boulder
CO
80309-0449
Investigator
Mike
Meshek
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
Boulder
CO
80309-0449
USA
EARTH SCIENCE
Cryosphere
Glaciers/Ice Sheets
Glacier Elevation/Ice Sheet Elevation
EARTH SCIENCE
Cryosphere
Glaciers/Ice Sheets
Glacier Elevation/Ice Sheet Elevation
EARTH SCIENCE
Cryosphere
Glaciers/Ice Sheets
Glacier Topography/Ice Sheet Topography
EARTH SCIENCE
Cryosphere
Glaciers/Ice Sheets
Glacier Topography/Ice Sheet Topography
EARTH SCIENCE
Cryosphere
Glaciers/Ice Sheets
Ice Sheets
EARTH SCIENCE
Cryosphere
Glaciers/Ice Sheets
Ice Sheets
EARTH SCIENCE
Cryosphere
Sea Ice
Ice Edges
EARTH SCIENCE
Cryosphere
Sea Ice
Ice Edges
EARTH SCIENCE
Oceans
Sea Ice
Ice Edges
EARTH SCIENCE
Oceans
Sea Ice
Ice Edges
EARTH SCIENCE
Spectral/Engineering
Radar
Radar Backscatter
EARTH SCIENCE
Spectral/Engineering
Radar
Radar Backscatter
EARTH SCIENCE
Spectral/Engineering
Radar
Radar Cross-section
EARTH SCIENCE
Spectral/Engineering
Radar
Radar Cross-section
EARTH SCIENCE
Spectral/Engineering
Radar
Radar Imagery
EARTH SCIENCE
Spectral/Engineering
Radar
Radar Imagery
EARTH SCIENCE
Spectral/Engineering
Radar
Radar Reflectivity
EARTH SCIENCE
Spectral/Engineering
Radar
Radar Reflectivity
EARTH SCIENCE
Spectral/Engineering
Radar
Return Power
EARTH SCIENCE
Spectral/Engineering
Radar
Return Power
EARTH SCIENCE
Terrestrial Hydrosphere
Glaciers/Ice Sheets
Glacier Elevation/Ice Sheet Elevation
EARTH SCIENCE
Terrestrial Hydrosphere
Glaciers/Ice Sheets
Glacier Elevation/Ice Sheet Elevation
EARTH SCIENCE
Terrestrial Hydrosphere
Glaciers/Ice Sheets
Glacier Topography/Ice Sheet Topography
EARTH SCIENCE
Terrestrial Hydrosphere
Glaciers/Ice Sheets
Glacier Topography/Ice Sheet Topography
EARTH SCIENCE
Terrestrial Hydrosphere
Glaciers/Ice Sheets
Ice Sheets
EARTH SCIENCE
Terrestrial Hydrosphere
Glaciers/Ice Sheets
Ice Sheets
Elevation
Geoscientific Information
Imagery/Base Maps/Earth Cover
Inland Waters
RADAR ALTIMETERS
SAR
Synthetic Aperture Radar
VISUAL OBSERVATIONS
ERS-1
European Remote Sensing Satellite-1
GEOSAT
Geodetic Satellite
1991-01-01
1995-12-31
1992-08-02
1992-09-09
complete
60
84
-73
-10
0 meters
3251.4 meters
CONTINENT
NORTH AMERICA
GREENLAND
100 m
100 m
2 km
2 km
13 m
EOSDIS
Earth Observing System Data Information System
ESIP
Earth Science Information Partners Program
The accuracy and precision of the DEM is not adequate for the detection of real ice surface elevation changes over time, and thus the DEM should not be used for such purposes. Additional processing would be necessary before the DEM could be used as part of a scheme for elevation change detection.
This data set is available for non-profit, research-oriented purposes only. Prospective users of the product are required to complete a Research Agreement stating that the image and elevation data will be only be used under the specified terms and conditions.
For non-profit, research-oriented purposes only.
English
NSIDC
NSIDC_DAAC
NASA DAAC at the National Snow and Ice Data Center
http://nsidc.org/daac/index.html
Data Center Contact
NSIDC
User Services
nsidc@nsidc.org
1 303 492-6199
1 303 492-2468
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
Boulder
CO
80309-0449
USA
NSIDC
National Snow and Ice Data Center
http://nsidc.org
Data Center Contact
NSIDC
User Services
nsidc@nsidc.org
1 303 492-6199
1 303 492-2468
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
Boulder
CO
80309-0449
USA
CD-ROM
Binary
http://nsidc.org/data/docs/daac/nsidc0075_geosat/images/greenland.gif
A low-resolution sample view of the DEM and Radar image coverage.
Andersen, Ole Baltazar. 1994. ERS-1 altimetry on the Greenland ice sheet: Preliminary investigations of annual variations. Geophysical Research Letters 21(15):1655-1658.
Binschadler, R. A., and P. L. Vornberger. 1993. Interpretation of SAR imagery of the Greenland ice sheet using coregistered TM imagery. Remote Sensing of Environment 167-175.
Ekholm, S. 1996. A full coverage, high-resolution topographic model of Greenland computed from a variety of digital elevation data. Journal of Geophysical Research 101(B10):21961-21972.
Ekholm, S., R. Forsberg, and J. M. Brozena. 1995. Accuracy of satellite altimeter elevations over the Greenland ice sheet. Journal of Geophysical Research 100(C2):2687-2696.
Fahnestock, M. A., and R. A. Bindschadler. 1993. Description of a program for SAR investigation of the Greenland ice sheet and an example of margin change detection using SAR. Annals of Glaciology 39(131): 119-132.
Fahnestock, M., R. Bindschadler, R. Kwok, and K. Jezek. 1993. Greenland ice sheet surface properties and ice dynamics from ERS-1 SAR imagery. Science 262:1530-1534.
Fahnestock, M., R. Bindschadler, R. Kwok, and K. Jezek. 1993. Greenland ice sheet surface properties and ice dynamics from ERS-1 SAR imagery.Science 262: 1525-1530.
Jezek, K. C., and S. Grace. 1991. Synthetic Aperture Radar observations of the Greenland ice sheet. EOS Suppl., p. 150.
Jezek, K. C. 1992. Spatial patterns in radar backscatter strength across the Greenland ice sheet. EOS Suppl., p. 181.
Jezek, K. C., and S. P. Gogineni. 1992. Microwave remote sensing of the Greenland ice sheet. IEEE Geoscience and Remote Sensing Newsletter 9:6-10.
Jezek, K. C., M. R. Drinkwater, J. P. Crawford, R. Bindschadler, and R. Kwok. 1993. Analysis of Synthetic Aperture Radar data collected over the southwestern Greenland ice sheet. Journal of Glaciology 39(131): 115-132.
Jezek, K. C., P. Gogineni, and M. Chanableh. 1994. Radar measurements of melt zones on the Greenland ice sheet. Geophysical Research Letters 21(1): 33-36.
Knowles, K. 1992. Points, Pixels, Grids, and Cells: A Mapping and Gridding Primer. Unpublished report to the National Snow and Ice Data Center, Boulder, CO.
Rignot, E. J., S. J. Austria, J. J. V. Zyl, and K. C. Jezek. 1993. Unusual radar echoes from the Greenland ice sheet. Science 261:1710-1713.
Rignot, E., J. V. Zyl, S. Ostro, and K. C. Jezek. 1993. Unusual radar echoes from the percolation zone of the Greenland ice sheet. EOS Suppl., p. 247.
Rignot, E. 1995. Backscatter model for the unusual radar properties of the Greenland ice sheet. Journal of Geophysical Research 100(E5): 9389-9400.
Simonett, D. S., F. T. Ulaby, J. E. Estes, and G. A. Thorley, eds. 1983. Manual of remote sensing, Falls Church, Virginia: American Society of Photogrammetry.
Vornberger, P. L., and R. A. Bindschadler. 1992. Multi-spectral analysis of ice sheets using co-registered SAR and TM imagery. International Journal of Remote Sensing 13(4): 637-645.
Zwally, R. A. Bindschadler, A. C. Brenner, and R. H. Thomas. 1983. Surface elevation contours of Greenland and Antarctic ice sheets. Journal of Geophysical Research 88: 1589-1596.
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 can be measured. Changing conditions resulting from climatic variation should show up as changes in the ice margin and shifts in the hydrologic zones. It is hoped that the standard reference provided by this data set can facilitate activities aimed at change detection and promote other work aimed at understanding the processes operating on the ice sheet.
The image data are derived from SAR image swaths acquired by the ERS-1 satellite during August of 1992. The mosaic was assembled at the Jet Propulsion Laboratory (JPL) and Goddard Space Flight Center (GSFC). Its component images are a copyrighted product of the European Space Agency. The mosaic, a value-added derived product, is available to individuals and non-profit organizations for research oriented purposes only. The Danish geodetic and cadastral agency Kort-og Matrikelstyrelsen (KMS) compiled the elevation data provided with the product from a number of sources, including field surveys, aerial photographs, and the ERS-1 radar altimeter. The elevation data are also provided only to individuals and non-profit organizations for research oriented purposes. Included with the data is NSIDC's limb (large image map browser) software, which was developed in-house and allows UNIX users to easily select and view portions of the mosaic image with elevation contours derived from the elevation data overlain. Limb is provided as 'freeware' for general use. NSIDC distributes the Digital SAR Mosaic and Elevation Map of the Greenland Ice Sheet on CD-ROM at no charge.
VIEW PROJECT HOME PAGE
http://nsidc.org/data/docs/daac/nsidc0052_greenland_sar_dem.gd.html
Online documentation.
VIEW PROJECT HOME PAGE
http://nsidc.org/data/docs/daac/nsidc0052_greenland_sar_dem/research_agreement.html
Research agreement that prospective users of the product are required to complete stating that the image and elevation data will be only be used under the specified terms and conditions.
VIEW RELATED INFORMATION
http://nsidc.org/data/dems/index.html
Polar Ice Sheet DEMs and Elevation Data
USA/NASA
CEOS IDN DIF
9.7
1997-01-01
2012-07-30
corrected dist. format