GLAS/ICESat L1B Global Backscatter Data  View Catalog Page
Identification Information:
Dataset Identifier:
GLA07
Citation:
Citation Information:
Originator: Zwally, H., R. Schutz, W. Hart, D. Hlavka, and S. Palm.
Publication Date: 20110811
Title: GLAS/ICESat L1B Global Backscatter Data
Edition: 33
Publication Information:
Publication Place: Boulder, Colorado USA
Publisher: NSIDC: National Snow and Ice Data Center
Online Linkage: http://nsidc.org/data/gla07.html
Description:
Abstract:
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-1B global backscatter data (GLA07) are provided at full instrument resolution. The product includes full 532 nm (41.1 to -1.0 km) and 1064 nm (20 to -1 km) calibrated attenuated backscatter profiles at 5 times per second, and from 10 to -1 km, at 40 times per second for both channels. Also included are calibration coefficient values and molecular backscatter profiles at once per second. Data granules contain approximately 190 minutes (2 orbits) of data.
Each data granule has an associated browse product that users can quickly peruse to determine the general quality of the data in the granule. Browse products consist of image plots of key parameters and statistics. Data are in scaled integer binary format, big-endian (Unix) byte order, and are available via FTP.
Purpose: scientific research
Documentation:
User's Guide:
Citation Information:
Originator: Zwally, H., R. Schutz, W. Hart, D. Hlavka, and S. Palm.
Publication Date: 20110811
Title: GLAS/ICESat L1B Global Backscatter Data
Publication Information:
Publication Place: Boulder, Colorado USA
Publisher: NSIDC: National Snow and Ice Data Center
Online Linkage: http://nsidc.org/data/docs/daac/glas_icesat_l1_l2_global_atmosphere.gd.html
Time Period of Content:
Time Period Information:
Range of Dates/Times:
Beginning Date: 20030220
Ending Date: 20091011
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: 86°
South Bounding Coordinate: -86°
Keywords:
Theme:
Theme Keyword Thesaurus: NASA Global Change Master Directory (GCMD) Science Keywords
Theme Keyword: EARTH SCIENCE Atmosphere Aerosols Aerosol Backscatter Aerosol Backscatter Cross Section Profile
Theme Keyword: EARTH SCIENCE Atmosphere Atmospheric Radiation Scattering
Theme Keyword: EARTH SCIENCE Land Surface Topography Terrain 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: ALTIMETERS
Theme Keyword: GLAS Geoscience Laser Altimeter System
Theme Keyword: LIDAR Light Detection and Ranging
Theme:
Theme Keyword Thesaurus: NASA Global Change Master Directory (GCMD) Platform Keywords
Theme Keyword: ICESAT Ice, Cloud and Land Elevation Satellite
Theme Keyword: SATELLITES
Theme:
Theme Keyword Thesaurus: ISO 19115 Topic Categories
Theme Keyword: climatologyMeteorologyAtmosphere
Theme:
Theme Keyword Thesaurus: None
Theme Keyword: Attenuated Backscatter Cross-section
Theme Keyword: Backscatter
Theme Keyword: DAAC
Theme Keyword: EOSDIS
Theme Keyword: GLA07
Theme Keyword: GLAS
Theme Keyword: Global Positioning System
Theme Keyword: GPS
Theme Keyword: ICESat
Theme Keyword: ISIPS
Theme Keyword: Laser Return Energy
Theme Keyword: Lidar
Theme Keyword: Lidar Backscatter
Theme Keyword: Lidar Return Signal
Theme Keyword: NASA
Theme Keyword: NSIDC
Theme Keyword: Orbit Number
Theme Keyword: Precision Attitude Determination
Theme Keyword: Precision Orbit Determination
Theme Keyword: Range
Place:
Place Keyword Thesaurus: NASA Global Change Master Directory (GCMD) Location Keywords
Place Keyword: Geographic Region Global
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:
GLA07
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:
20130306
Metadata Review Date:
20130306
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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