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Digital SAR Mosaic and Elevation Map of the Greenland Ice Sheet

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Identification Information:

Dataset Identifier:

NSIDC-0052

Citation:

Citation Information:

Originator: Fahnestock, Mark, Simon Ekholm, Kenneth Knowles, Ron Kwok, Ted Scambos
Publication Date: 19970101
Title: Digital SAR Mosaic and Elevation Map of the Greenland Ice Sheet
Publication Information:
Publication Place: Boulder, Colorado USA
Publisher: NSIDC: National Snow and Ice Data Center
Online Linkage: http://nsidc.org/data/nsidc-0052.html

Description:

Abstract:

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.

Purpose: scientific research

Documentation:

User's Guide:

Citation Information:

Originator: Fahnestock, Mark, Simon Ekholm, Kenneth Knowles, Ron Kwok, Ted Scambos
Publication Date: 19970101
Title: Digital SAR Mosaic and Elevation Map of the Greenland Ice Sheet
Publication Information:
Publication Place: Boulder, Colorado USA
Publisher: NSIDC: National Snow and Ice Data Center
Online Linkage: http://nsidc.org/data/docs/daac/nsidc0052_greenland_sar_dem.gd.html

Time Period of Content:

Time Period Information:

Range of Dates/Times:

Beginning Date: 19910101
Ending Date: 19951231

Currentness Reference: publication date

Status:

Progress: Complete
Maintenance and Update Frequency: Unknown

Spatial Domain:

Bounding Coordinates:

 

West Bounding Coordinate: -73°
East Bounding Coordinate: -10°
North Bounding Coordinate: 84°
South Bounding Coordinate: 60°

Keywords:

Theme:

Theme Keyword Thesaurus: NASA Global Change Master Directory (GCMD) Science Keywords
Theme Keyword: EARTH SCIENCE Cryosphere Glaciers/Ice Sheets Glacier Elevation/Ice Sheet Elevation
Theme Keyword: EARTH SCIENCE Cryosphere Glaciers/Ice Sheets Glacier Elevation/Ice Sheet Elevation
Theme Keyword: EARTH SCIENCE Cryosphere Glaciers/Ice Sheets Glacier Topography/Ice Sheet Topography
Theme Keyword: EARTH SCIENCE Cryosphere Glaciers/Ice Sheets Glacier Topography/Ice Sheet Topography
Theme Keyword: EARTH SCIENCE Cryosphere Glaciers/Ice Sheets Ice Sheets
Theme Keyword: EARTH SCIENCE Cryosphere Glaciers/Ice Sheets Ice Sheets
Theme Keyword: EARTH SCIENCE Cryosphere Sea Ice Ice Edges
Theme Keyword: EARTH SCIENCE Cryosphere Sea Ice Ice Edges
Theme Keyword: EARTH SCIENCE Oceans Sea Ice Ice Edges
Theme Keyword: EARTH SCIENCE Oceans Sea Ice Ice Edges
Theme Keyword: EARTH SCIENCE Spectral/Engineering Radar Radar Backscatter
Theme Keyword: EARTH SCIENCE Spectral/Engineering Radar Radar Backscatter
Theme Keyword: EARTH SCIENCE Spectral/Engineering Radar Radar Cross-section
Theme Keyword: EARTH SCIENCE Spectral/Engineering Radar Radar Cross-section
Theme Keyword: EARTH SCIENCE Spectral/Engineering Radar Radar Imagery
Theme Keyword: EARTH SCIENCE Spectral/Engineering Radar Radar Imagery
Theme Keyword: EARTH SCIENCE Spectral/Engineering Radar Radar Reflectivity
Theme Keyword: EARTH SCIENCE Spectral/Engineering Radar Radar Reflectivity
Theme Keyword: EARTH SCIENCE Spectral/Engineering Radar Return Power
Theme Keyword: EARTH SCIENCE Spectral/Engineering Radar Return Power
Theme Keyword: EARTH SCIENCE Terrestrial Hydrosphere Glaciers/Ice Sheets Glacier Elevation/Ice Sheet Elevation
Theme Keyword: EARTH SCIENCE Terrestrial Hydrosphere Glaciers/Ice Sheets Glacier Elevation/Ice Sheet Elevation
Theme Keyword: EARTH SCIENCE Terrestrial Hydrosphere Glaciers/Ice Sheets Glacier Topography/Ice Sheet Topography
Theme Keyword: EARTH SCIENCE Terrestrial Hydrosphere Glaciers/Ice Sheets Glacier Topography/Ice Sheet Topography
Theme Keyword: EARTH SCIENCE Terrestrial Hydrosphere Glaciers/Ice Sheets Ice Sheets
Theme Keyword: EARTH SCIENCE Terrestrial Hydrosphere Glaciers/Ice Sheets Ice Sheets

Theme:

Theme Keyword Thesaurus: NASA Global Change Master Directory (GCMD) Project Keywords
Theme Keyword: EOSDIS Earth Observing System Data Information System
Theme Keyword: ESIP Earth Science Information Partners Program

Theme:

Theme Keyword Thesaurus: NASA Global Change Master Directory (GCMD) Instrument Keywords
Theme Keyword: RADAR ALTIMETERS
Theme Keyword: SAR Synthetic Aperture Radar
Theme Keyword: VISUAL OBSERVATIONS

Theme:

Theme Keyword Thesaurus: NASA Global Change Master Directory (GCMD) Platform Keywords
Theme Keyword: ERS-1 European Remote Sensing Satellite-1
Theme Keyword: GEOSAT Geodetic Satellite

Theme:

Theme Keyword Thesaurus: ISO 19115 Topic Categories
Theme Keyword: elevation
Theme Keyword: geoscientificinformation
Theme Keyword: imageryBaseMapsEarthCover
Theme Keyword: inlandWaters

Place:

Place Keyword Thesaurus: NASA Global Change Master Directory (GCMD) Location Keywords
Place Keyword: Continent North America Greenland

Access Constraints:

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.

Use Constraints:

For non-profit, research-oriented purposes only.

Point of Contact:

Contact Information:

Contact Person Primary:

Contact Person: NSIDC User Services
Contact Organization: National Snow and Ice Data Center

Contact Address:

Address Type: mailing
Address:
  • CIRES, 449 UCB
  • University of Colorado
City: Boulder
State or Province: CO
Postal Code: 80309-0449
Country: USA

Contact Voice Telephone: 1 303 492-6199 x
Contact Facsimile Telephone: 1 303 492-2468 x
Contact Electronic Mail Address: nsidc@nsidc.org

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Distribution Information:

Distributor:

Contact Information:

Contact Organization Primary:

Contact Organization: National Snow and Ice Data Center
Contact Person: NSIDC User Services

Contact Address:

Address Type: mailing
Address:
  • National Snow and Ice Data Center
  • CIRES, 449 UCB
  • University of Colorado
City: Boulder
State or Province: CO
Postal Code: 80309-0449
Country: USA

Contact Voice Telephone: 1 303 492-6199
Contact Facsimile Telephone: 1 303 492-2468
Contact Electronic Mail Address: nsidc@nsidc.org

Resource Description:

NSIDC-0052

Distribution Liability:

NSIDC cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NSIDC makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.

Standard Order Process:

Digital Form:

Digital Transfer Information:

Format Name: Binary

Digital Transfer Option:

Online Option:

Computer Contact Information:

Network Address:

Network Resource Name: Click here.

Fees: None

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Metadata Reference Information:

Metadata Date:

20120730

Metadata Review Date:

20120730

Metadata Contact:

Contact Information:

Contact Person Primary:

Contact Person: NSIDC User Services
Contact Organization: National Snow and Ice Data Center

Contact Address:

Address Type: mailing
Address:
  • National Snow and Ice Data Center
  • CIRES, 449 UCB
  • University of Colorado
City: Boulder
State or Province: CO
Postal Code: 80309-0449
Country: USA

Contact Voice Telephone: 1 303 492-6199
Contact Facsimile Telephone: 1 303 492-2468
Contact Electronic Mail Address: nsidc@nsidc.org

Metadata Standard Name:

FGDC Content Standard for Digital Geospatial Metadata: Extensions for Remote Sensing Metadata

Metadata Standard Version:

FGDC-STD-012-2002

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Metadata Views

FGDC Text-Only

Federal Geographic Data Committee (FGDC) in plain text

FGDC XML

Federal Geographic Data Committee (FGDC) in Extensible Markup Language (XML)

DIF HTML

NASA Global Change Master Directory (GCMD) Directory Interchange Format (DIF)

ISO HTML

International Organization for Standardization (ISO) 19115:2003 Geographic Information Metadata