GLAS/ICESat L1B Global Backscatter Data

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Metadata Entity Set Information:

Language:

eng; usa

Character Set:

Value: UTF8
CodeList: MD_CharacterSetCode

Hierarchy Level:

Value: dataset
CodeList: MD_ScopeCode

Hierarchy Level Name:

GLAS/ICESat L1B Global Backscatter Data

Contact:

Responsible Party:

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

Contact Phone:

Contact Voice Telephone: 1 303 492-6199 x

Contact Address:

Delivery Point: CIRES, 449 UCB
City: Boulder
Administrative Area: CO
Postal Code: 80309-0449
Country: USA
Email: nsidc@nsidc.org

Contact Online Resources:

Website: http://nsidc.org

Contact Role:

Value: pointOfContact
CodeList: CI_RoleCode

Date Stamp:

2014-11-01

Metadata Standard Name:

ISO 19115 Geographic Information - Metadata First Edition

Metadata Standard Version:

ISO 19115:2003

Dataset URI:

http://nsidc.org/data/gla07.html

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Data Identification Information:

Citation:

Citation Information:

Title: GLAS/ICESat L1B Global Backscatter Data
Date:
Date: 2011
Date Type:
Value: publication
CodeList: CI_DateTypeCode
Edition: 33
Edition Date: 2011-08-11
Identifier: GLA07
Identifier: http://dx.doi.org/10.5067/ICESAT/GLAS/DATA127
Cited Responsible Party:

Responsible Party:

Individual Name: NSIDC DAAC User Services
Organization Name: NASA DAAC at the National Snow and Ice Data Center
Contact:

Contact Phone:

Contact Voice Telephone: 1 303 492-6199

Contact Address:

Delivery Point: National Snow and Ice Data Center
City: Boulder
Administrative Area: CO
Postal Code: 80309-0449
Country: USA
Email: nsidc@nsidc.org

Contact Online Resources:

Website: http://nsidc.org/daac/index.html

Contact Role:

Value: custodian
CodeList: CI_RoleCode

Responsible Party:

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

Contact Phone:

Contact Voice Telephone: 1 303 492-6199

Contact Address:

Delivery Point: National Snow and Ice Data Center
City: Boulder
Administrative Area: CO
Postal Code: 80309-0449
Country: USA
Email: nsidc@nsidc.org

Contact Online Resources:

Website: http://nsidc.org

Contact Role:

Value: custodian
CodeList: CI_RoleCode

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

Credit:

The following example shows how to cite the use of this data set in a publication. For more information, see our Use and Copyright Web page.

Zwally, H., R. Schutz, W. Hart, D. Hlavka, and S. Palm. 2011. GLAS/ICESat L1B Global Backscatter Data. Version 33. [indicate subset used]. Boulder, Colorado USA: National Snow and Ice Data Center. http://dx.doi.org/10.5067/ICESAT/GLAS/DATA127.

Status:

Value: complete
CodeList: MD_ProgressCode

Point of Contact:

Responsible Party:

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

Contact Phone:

Contact Voice Telephone: 1 303 492-6199 x

Contact Address:

Delivery Point: CIRES, 449 UCB
City: Boulder
Administrative Area: CO
Postal Code: 80309-0449
Country: USA
Email: nsidc@nsidc.org

Contact Role:

Value: pointOfContact
CodeList: CI_RoleCode

Responsible Party:

Individual Name: David Hancock
Organization Name: NASA Goddard Space Flight Center
Contact:

Contact Address:

Delivery Point: ISIPS Manager
Email: David.W.Hancock@nasa.gov

Contact Role:

Value: pointOfContact
CodeList: CI_RoleCode

Responsible Party:

Individual Name: H. Jay Zwally
Organization Name: NASA/Goddard Space Flight Center
Contact:

Contact Phone:

Contact Voice Telephone: 1 301 614-5643

Contact Address:

Delivery Point: Laboratory for Hydrospheric Processes
City: Greenbelt
Administrative Area: MD
Postal Code: 20771
Country: USA
Email: Jay.Zwally@nasa.gov

Contact Role:

Value: principalInvestigator
CodeList: CI_RoleCode

Responsible Party:

Individual Name: H. Jay Zwally
Organization Name: NASA/Goddard Space Flight Center
Contact:

Contact Phone:

Contact Voice Telephone: 1 301 614-5643

Contact Address:

Delivery Point: Laboratory for Hydrospheric Processes
City: Greenbelt
Administrative Area: MD
Postal Code: 20771
Country: USA
Email: Jay.Zwally@nasa.gov

Contact Role:

Value: principalInvestigator
CodeList: CI_RoleCode

Responsible Party:

Individual Name: Robert Schutz
Organization Name: University of Texas at Austin
Contact:

Contact Address:

Delivery Point: GLAS Science Team Lead
City: Austin
Administrative Area: TX
Postal Code: 78712-1085
Country: USA

Contact Role:

Value: principalInvestigator
CodeList: CI_RoleCode

Responsible Party:

Individual Name: Steve Palm
Organization Name: Science Systems and Applications, Inc.
Contact:

Contact Address:

Delivery Point: Science Systems and Applications, Inc.
City: Lanham
Administrative Area: MD
Country: USA

Contact Role:

Value: principalInvestigator
CodeList: CI_RoleCode

Responsible Party:

Individual Name: William Hart
Organization Name: Science Systems and Applications, Inc.
Contact:

Contact Address:

Delivery Point: Science Systems and Applications, Inc.
City: Lanham
Administrative Area: MD
Country: USA

Contact Role:

Value: principalInvestigator
CodeList: CI_RoleCode

Responsible Party:

Individual Name: Dennis Hlavka
Organization Name: Science Systems and Applications, Inc.
Contact:

Contact Address:

Delivery Point: Science Systems and Applications, Inc.
City: Lanham
Administrative Area: MD
Country: USA

Contact Role:

Value: principalInvestigator
CodeList: CI_RoleCode

Responsible Party:

Individual Name: James Spinhirne
Organization Name: NASA/Goddard Space Flight Center
Contact:

Contact Address:

Delivery Point: NASA/Goddard Space Flight Center
City: Greenbelt
Administrative Area: MD
Postal Code: 20771
Country: USA

Contact Role:

Value: principalInvestigator
CodeList: CI_RoleCode

Responsible Party:

Individual Name: Ellsworth Welton
Organization Name: NASA/Goddard Space Flight Center
Contact:

Contact Address:

Delivery Point: NASA/Goddard Space Flight Center
City: Greenbelt
Administrative Area: MD
Country: USA

Contact Role:

Value: principalInvestigator
CodeList: CI_RoleCode

Maintenance Information:

Maintenance and Update Frequency:

Value: asNeeded
CodeList: MD_MaintenanceFrequencyCode

Update Scope:

Value: dataset
CodeList: MD_ScopeCode

Value: series
CodeList: MD_ScopeCode

Value: attribute
CodeList: MD_ScopeCode

Contact:

Responsible Party:

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

Contact Phone:

Contact Voice Telephone: 1 303 492-6199 x

Contact Address:

Delivery Point: CIRES, 449 UCB
City: Boulder
Administrative Area: CO
Postal Code: 80309-0449
Country: USA
Email: nsidc@nsidc.org

Contact Online Resources:

Website: http://nsidc.org

Contact Role:

Value: pointOfContact
CodeList: CI_RoleCode

Descriptive Keywords:

Keywords

Keyword: Geographic Region > Global
Keyword Type:
Value: place
CodeList: MD_KeywordTypeCode
Keyword Thesaurus:

Citation Information:

Title: NASA / GCMD Location Keywords
Date:
Date: 2008-02-05
Date Type:
Value: revision
CodeList: CI_DateTypeCode

Keywords

Keyword: EARTH SCIENCE > Atmosphere > Aerosols > Aerosol Backscatter > Aerosol Backscatter Cross Section Profile
Keyword: EARTH SCIENCE > Atmosphere > Atmospheric Radiation > Scattering
Keyword: EARTH SCIENCE > Land Surface > Topography > Terrain Elevation
Keyword Type:
Value: discipline
CodeList: MD_KeywordTypeCode
Keyword Thesaurus:

Citation Information:

Title: NASA / GCMD Science Keywords
Date:
Date: 2008-02-05
Date Type:
Value: revision
CodeList: CI_DateTypeCode

Keywords

Keyword: ICESAT > Ice, Cloud and Land Elevation Satellite
Keyword Type:
Value: theme
CodeList: MD_KeywordTypeCode
Keyword Thesaurus:

Citation Information:

Title: NASA / GCMD Project Keywords
Date:
Date: 2008-01-24
Date Type:
Value: revision
CodeList: CI_DateTypeCode

Keywords

Keyword: Attenuated Backscatter Cross-section
Keyword: Backscatter
Keyword: DAAC
Keyword: EOSDIS
Keyword: GLA07
Keyword: GLAS
Keyword: Global Positioning System
Keyword: GPS
Keyword: ICESat
Keyword: ISIPS
Keyword: Laser Return Energy
Keyword: Lidar
Keyword: Lidar Backscatter
Keyword: Lidar Return Signal
Keyword: NASA
Keyword: NSIDC
Keyword: Orbit Number
Keyword: Precision Attitude Determination
Keyword: Precision Orbit Determination
Keyword: Range
Keyword Type:
Value: theme
CodeList: MD_KeywordTypeCode

Dataset Constraints:

Legal Constraints:

Access Constraints:

Value: otherRestrictions
CodeList: MD_RestrictionCode

Use Constraints:

Value: otherRestrictions
CodeList: MD_RestrictionCode

Other Constraints:

Access Constraints : none

Use Constraints : none

Language:

eng; usa

Character Set:

Value: UTF8
CodeList: MD_CharacterSetCode

Topic Category:

Value: climatologyMeteorologyAtmosphere
CodeList: MD_topicCategoryCode

Extent Information:

Spatial Temporal Extent:

Geographic Element:

Bounding Coordinates:

 

Westbound Longitude: -180
Eastbound Longitude: 180
Southbound Latitude: -86
Northbound Latitude: 86

Temporal Element:

Time Period:

Begin Position: 20030220
End Position: 20091011

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Distribution Information:

Distributor Information:

Distributor Contact:

Responsible Party:

Individual Name: NSIDC DAAC User Services
Organization Name: NASA DAAC at the National Snow and Ice Data Center
Contact:

Contact Phone:

Contact Voice Telephone: 1 303 492-6199

Contact Address:

Delivery Point: National Snow and Ice Data Center
City: Boulder
Administrative Area: CO
Postal Code: 80309-0449
Country: USA
Email: nsidc@nsidc.org

Contact Online Resources:

Website: http://nsidc.org/daac/index.html

Contact Role:

Value: custodian
CodeList: CI_RoleCode

Responsible Party:

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

Contact Phone:

Contact Voice Telephone: 1 303 492-6199

Contact Address:

Delivery Point: National Snow and Ice Data Center
City: Boulder
Administrative Area: CO
Postal Code: 80309-0449
Country: USA
Email: nsidc@nsidc.org

Contact Online Resources:

Website: http://nsidc.org

Contact Role:

Value: custodian
CodeList: CI_RoleCode

Distribution Format(s):

Data File Format:

Name: Binary
Specification: FTP 827 MB

Digital Transfer Options:

Online Transfer Options:

Online Resources:

Linkage: ftp://n5eil01u.ecs.nsidc.org/SAN/GLAS/GLA07.033
Description: Data Access URL
Function:

Value: download
CodeList: CI_OnLineFunctionCode

Function:

Value:
CodeList: CI_OnLineFunctionCode

Linkage: http://nsidc.org/data/docs/daac/glas_icesat_l1_l2_global_atmosphere.gd.html
Description: Documentation URL
Function:

Value: information
CodeList: CI_OnLineFunctionCode

Offline Transfer Options:

Offline Resources:

Name:

Value: onLine
CodeList: MD_MediumNameCode
Density: 827
Density Units: B
Medium Name: FTP

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Data Acquisition Information:

Instrument Information:

Instrument:

Name: ALTIMETERS
Type: sensor

Instrument:

Name: GLAS > Geoscience Laser Altimeter System
Type: sensor

Instrument:

Name: LIDAR > Light Detection and Ranging
Type: sensor

Platform Information:

Platform:

Name: ICESAT > Ice, Cloud and Land Elevation Satellite
Description: satellite
Instrument: N/A

Platform:

Name: SATELLITES
Description: satellite
Instrument: N/A

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Metadata Views

ISO Text-Only

International Organization for Standardization (ISO) in plain text

ISO XML

International Organization for Standardization (ISO) in Extensible Markup Language (XML)

DIF HTML

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

FGDC HTML

U.S. Federal Geographic Data Committee (FGDC) Content Standard for Digital Geospatial Metadata (CSDGM)