GLAS/ICESat L2 Antarctic and Greenland Ice Sheet Altimetry Data (HDF5)

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Identification Information:

Dataset Identifier:

GLAH12

Citation:

Citation Information:

Originator: Zwally, H., R. Schutz, D. Hancock, and J. Dimarzio.
Publication Date: 20141017
Title: GLAS/ICESat L2 Antarctic and Greenland Ice Sheet Altimetry Data (HDF5)
Edition: 34
Publication Information:
Publication Place: Boulder, Colorado USA
Publisher: NSIDC DAAC: NASA DAAC at the National Snow and Ice Data Center
Online Linkage: http://nsidc.org/data/glah12.html
Online Linkage: http://dx.doi.org/10.5067/ICESAT/GLAS/DATA209

Description:

Abstract:

GLAH06 is used in conjunction with GLAH05 to create the Level-2 altimetry products. Level-2 altimetry data provide surface elevations for ice sheets (GLAH12), sea ice (GLAH13), land (GLAH14), and oceans (GLAH15). Data also include the laser footprint geolocation and reflectance, as well as geodetic, instrument, and atmospheric corrections for range measurements. The Level-2 elevation products, are regional products archived at 14 orbits per granule, starting and stopping at the same demarcation (± 50° latitude) as GLAH05 and GLAH06. Each regional product is processed with algorithms specific to that surface type. Surface type masks define which data are written to each of the products. If any data within a given record fall within a specific mask, the entire record is written to the product. Masks can overlap: for example, non-land data in the sea ice region may be written to the sea ice and ocean products. This means that an algorithm may write the same data to more than one Level-2 product. In this case, different algorithms calculate the elevations in their respective products. The surface type masks are versioned and archived at NSIDC, so users can tell which data to expect in each product. Each data granule has an associated browse product.

Purpose: scientific research

Documentation:

User's Guide:

Citation Information:

Originator: Zwally, H., R. Schutz, D. Hancock, and J. Dimarzio.
Publication Date: 20141017
Title: GLAS/ICESat L2 Antarctic and Greenland Ice Sheet Altimetry Data (HDF5)
Publication Information:
Publication Place: Boulder, Colorado USA
Publisher: NSIDC DAAC: NASA DAAC at the National Snow and Ice Data Center
Online Linkage: http://nsidc.org/data/docs/daac/glas-icesat-l1-l2-global-altimetry-hdf5-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 Cryosphere Glaciers/Ice Sheets Glacier Elevation/Ice Sheet Elevation Laser Reflectance
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 Sea Ice Reflectance Laser Reflectance
Theme Keyword: EARTH SCIENCE Oceans Sea Ice Reflectance
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 Ice Sheets

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: Atmospheric Delay Correction
Theme Keyword: DAAC
Theme Keyword: Dem
Theme Keyword: EOSDIS
Theme Keyword: GLA12
Theme Keyword: GLAS
Theme Keyword: Ice Roughness
Theme Keyword: ICESat
Theme Keyword: Ice Sheet Elevation
Theme Keyword: ISIPS
Theme Keyword: Laser Footprint
Theme Keyword: Laser Pulse
Theme Keyword: NASA
Theme Keyword: Noise Level
Theme Keyword: NSIDC
Theme Keyword: Off-nadir Pointing Direction
Theme Keyword: Peak Amplitude
Theme Keyword: Range
Theme Keyword: Received Energy
Theme Keyword: Received Pulse Gain
Theme Keyword: Signal Saturation
Theme Keyword: Solar Incidence Angle
Theme Keyword: Transmitted Energy
Theme Keyword: Transmitted Gain
Theme Keyword: Waveform
Theme Keyword: Waveform Kurtosis
Theme Keyword: Waveform Peak
Theme Keyword: Waveform Skewness

Place:

Place Keyword Thesaurus: NASA Global Change Master Directory (GCMD) Location Keywords
Place Keyword: Geographic Region Global

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:

GLAH12

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: HDF

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:

20141104

Metadata Review Date:

20141104

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