GLAS/ICESat 500 m Laser Altimetry Digital Elevation Model of Antarctica  View Catalog Page
Identification Information:
Dataset Identifier:
NSIDC-0304
Citation:
Citation Information:
Originator: John P. DiMarzio
Publication Date: 20070621
Title: GLAS/ICESat 500 m Laser Altimetry Digital Elevation Model of Antarctica
Publication Information:
Publication Place: Boulder, Colorado USA
Publisher: NSIDC: National Snow and Ice Data Center
Online Linkage: http://nsidc.org/data/nsidc-0304.html
Description:
Abstract:
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. It is provided on polar stereographic grids at 500 m grid spacing. The grid covers all of Antarctica north of 86° S. Elevations are reported as centimeters above the datums, relative to both the WGS 84 ellipsoid and the EGM96 geoid, in two separate elevation data files. A data quality map of the interpolation distance is distributed in addition to the elevation data. ENVI header files are also provided.
The data are in 4-byte (long) signed integer binary files (big endian byte order) and are available via FTP.
Purpose: scientific research
Documentation:
User's Guide:
Citation Information:
Originator: John P. DiMarzio
Publication Date: 20070621
Title: GLAS/ICESat 500 m Laser Altimetry Digital Elevation Model of Antarctica
Publication Information:
Publication Place: Boulder, Colorado USA
Publisher: NSIDC: National Snow and Ice Data Center
Online Linkage: http://nsidc.org/data/docs/daac/nsidc0304_0305_glas_dems.gd.html
Time Period of Content:
Time Period Information:
Range of Dates/Times:
Beginning Date: 20030201
Ending Date: 20050630
Currentness Reference: publication date
Status:
Progress: Complete
Maintenance and Update Frequency: Unknown
Spatial Domain:
Bounding Coordinates:
West Bounding Coordinate: -180°
East Bounding Coordinate: 180°
North Bounding Coordinate: -63°
South Bounding Coordinate: -86°
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 Terrestrial Hydrosphere Glaciers/Ice Sheets Glacier Elevation/Ice Sheet Elevation
Theme:
Theme Keyword Thesaurus: NASA Global Change Master Directory (GCMD) Project Keywords
Theme Keyword: ICESAT Ice, Cloud and Land Elevation Satellite
Theme:
Theme Keyword Thesaurus: NASA Global Change Master Directory (GCMD) Instrument Keywords
Theme Keyword: GLAS Geoscience Laser Altimeter System
Theme:
Theme Keyword Thesaurus: NASA Global Change Master Directory (GCMD) Platform Keywords
Theme Keyword: ICESAT Ice, Cloud and Land Elevation Satellite
Theme:
Theme Keyword Thesaurus: ISO 19115 Topic Categories
Theme Keyword: elevation
Theme:
Theme Keyword Thesaurus: None
Theme Keyword: Altimetry
Theme Keyword: Antarctica
Theme Keyword: Antarctic Ice Sheet
Theme Keyword: Dem
Theme Keyword: Digital Elevation Model
Theme Keyword: Elevation
Theme Keyword: Ice Sheet
Theme Keyword: Ice Sheet Elevation
Theme Keyword: Polar
Theme Keyword: Polar Stereographic
Theme Keyword: South Pole
Place:
Place Keyword Thesaurus: NASA Global Change Master Directory (GCMD) Location Keywords
Place Keyword: Continent Antarctica
Platform and Instrument Identification:
Platform Full Name: Ice, Cloud and Land Elevation Satellite
Platform Short Name: ICESAT
Instrument Full Name: Geoscience Laser Altimeter System
Instrument Short Name: GLAS
Access Constraints:
None
Use Constraints:
None
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-0304
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:
20120828
Metadata Review Date:
20120828
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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