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Antarctic 5-km Digital Elevation Model from ERS-1 Altimetry

Federal Geographic Data Committee (FGDC) Metadata:

Identification_Information
Data_Quality_Information
Spatial_Reference_Information
Distribution_Information
Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Jonathan Bamber

Publication_Date: 20000101

Title: Antarctic 5-km Digital Elevation Model from ERS-1 Altimetry

Edition:

Geospatial_Data_Presentation_Form:

Series_Information:

Series_Name:
Issue_Identification:

Publication_Information:

Publication_Place: Boulder, CO U.S.A.
Publisher: National Snow and Ice Data Center (NSIDC)

Other_Citation_Details:

Online_Linkage: http://nsidc.org/data/nsidc-0076.html

Description:

Abstract:: This data set provides a digital elevation model (DEM) for Antarctica to 81.5 degrees south latitude, at a resolution of 5 km. Approximately twenty million data points were used to generate this data set. Data points were derived from ERS-1 radar altimetry during the geodetic phase from March 1994 to May 1995. The improved density in coverage and resolution, compared with past satellite altimetry missions, provides better detection of topographic detail such as surface undulations, ice streams, grounding zones, and interstream ridges. DEM data are in a polar stereographic projection with the origin at the south pole, and are referenced to the OSU91A geoid. The ERS-1 satellite radar altimeter measurements are highly useful for determining precise ice sheet elevations in Antarctica. The orthometric heights derived from the ERS-1 data contribute to a more accurate and complete mapping of the Antarctic Ice Sheets than previously possible, and therefore to ongoing studies of ice mass balance studies in Antarctica. The DEM is provided as a single ASCII text file, accessible by ftp. Data access is unrestricted, but we recommend that users register with us. Registered users automatically receive e-mail notification of product updates and changes to processing.
Purpose:: Not Available
Supplemental_Information:: REFERENCE: Bamber, J.L. and R.A. Bindschadler. 1997. An improved elevation dataset for climate and ice-sheet modelling: validation with satellite imagery. Annals of Glaciology 25:438-444. Bamber, J.L. and P. Huybrechts. 1996. Geometric boundary conditions for modelling the velocity field of the Antarctic ice sheet. Annals of Glaciology 23:364-373. Bamber, J. and C. Bentley. 1994. A comparison of satellite-altimetry and ice-thickness measurements of the Ross Ice Shelf, Antarctica. Annals of Glaciology 20:357-364. Bamber, J. 1994. A digital elevation model of the Antarctic ice sheet derived from ERS-1 altimeter data and comparison with terrestrial measurements. Annals of Glaciology 20:48-54. Bamber, J. 1994. Ice sheet altimeter processing scheme. International Journal of Remote Sensing 15:925-938.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 19940301
Ending_Date: 19950531

Currentness_Reference:Unknown

Status:

Progress: Complete
Maintenance_and_Update_Frequency: As needed

Spatial_Domain:

Description_of_Geographic_Extent:

Bounding_Coordinates:

West_Bounding_Coordinate: -180.0
East_Bounding_Coordinate: 180.0
North_Bounding_Coordinate: -65.0
South_Bounding_Coordinate: -81.0

Keywords:

Theme:

Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS
Theme_Keyword_Thesaurus: GCMD PLATFORM
Theme_Keyword_Thesaurus: GCMD INSTRUMENT
Theme_Keyword_Thesaurus: PROJECT
Theme_Keyword_Thesaurus: ANCILLARY KEYWORDS
Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY
Theme_Keyword_Thesaurus: DATA SET LANGUAGE
Theme_Keyword: EARTH SCIENCE > CRYOSPHERE > GLACIERS/ICE SHEETS > ICE SHEETS
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > GLACIERS/ICE SHEETS > ICE SHEETS
Theme_Keyword: EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TOPOGRAPHICAL RELIEF
Theme_Keyword: EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > SURFACE ROUGHNESS
Theme_Keyword: EARTH SCIENCE > CRYOSPHERE > GLACIERS/ICE SHEETS > GLACIER TOPOGRAPHY/ICE SHEET TOPOGRAPHY
Theme_Keyword: EARTH SCIENCE > CRYOSPHERE > 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 ELEVATION/ICE SHEET ELEVATION
Theme_Keyword: ERS-1 > EUROPEAN REMOTE SENSING SATELLITE-1
Theme_Keyword: SATELLITES
Theme_Keyword: RA > ERS RADAR ALTIMETER
Theme_Keyword: RADAR ALTIMETERS
Theme_Keyword: EOSDIS > EARTH OBSERVING SYSTEM DATA INFORMATION SYSTEM
Theme_Keyword: ESIP > EARTH SCIENCE INFORMATION PARTNERS PROGRAM
Theme_Keyword: Altimetry
Theme_Keyword: Antarctic
Theme_Keyword: Antarctica
Theme_Keyword: Daac
Theme_Keyword: Dem
Theme_Keyword: Digital Elevation Model
Theme_Keyword: Eosdis
Theme_Keyword: Ice Sheet Elevation
Theme_Keyword: Ice Sheets
Theme_Keyword: Nasa
Theme_Keyword: Nsidc
Theme_Keyword: Surface Elevation
Theme_Keyword: Topography
Theme_Keyword: ELEVATION
Theme_Keyword: GEOSCIENTIFIC INFORMATION
Theme_Keyword: INLAND WATERS
Theme_Keyword: ENGLISH

Place:

Place_Keyword_Thesaurus: GCMD
Place_Keyword: CONTINENT > ANTARCTICA
Place_Keyword: GEOGRAPHIC REGION > POLAR

Temporal:

Temporal_Keyword_Thesaurus: GCMD
Temporal_Keyword: Daily
Temporal_Keyword: Daily - < Weekly

Access_Constraints: Not Available

Use_Constraints:

Not Available

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: NSIDC USER SERVICES

Contact_Position: TECHNICAL CONTACT

Contact_Address:

Address_Type: Mailing and Physical Address
Address: National Snow and Ice Data Center
Address: CIRES, 449 UCB
Address: 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

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:: Various methods were applied to improve the accuracy of elevation estimates over the Antarctic ice sheet, including waveform tracking, slope correction, data filtering (tests for return-echo waveform shape, backscatter coefficient, and retracking correction values for each altimeter height estimate), and removal of anomalous orbits.

Logical_Consistency_Report:

Not Available

Completeness_Report:

Not Available

Lineage:

Process_Step:

Process_Description:: Not Available
Process_Date: Unknown

Spatial_Reference_Information:

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: NSIDC_DAAC > NSIDC Distributed Active Archive Center
Contact_Person: NSIDC USER SERVICES

Contact_Position: DATA CENTER CONTACT

Contact_Address:

Address_Type: Mailing and Physical Address
Address: National Snow and Ice Data Center
Address: CIRES, 449 UCB
Address: 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

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: NSIDC > National Snow and Ice Data Center
Contact_Person: NSIDC USER SERVICES

Contact_Position: DATA CENTER CONTACT

Contact_Address:

Address_Type: Mailing and Physical Address
Address: National Snow and Ice Data Center
Address: CIRES, 449 UCB
Address: 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-0076

Distribution_Liability:

Not Available

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: ASCII
Transfer_Size: 39.6 MB uncompressed

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

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

Access_Instructions:

DATA CENTER URL

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:: http://nsidc.org

Access_Instructions:

DATA CENTER URL

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:: ftp://sidads.colorado.edu/pub/DATASETS/BAMBER_DEM/...

Access_Instructions:

FTP site for obtaining these data.

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:: http://reverb.echo.nasa.gov/reverb/#utf8=%E2%9C%93...

Access_Instructions:

Refine your granule search with ECHO's next generation Earth Science discovery tool (Reverb) using information from this record.

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:: http://nsidc.org/cgi-bin/acap.pl?service=WMS&versi...

Access_Instructions:

Access these data as map images using the Open Geospatial Consortium (OGC) Web Map Service (WMS).

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:: http://nsidc.org/cgi-bin/acap.pl?service=WFS&versi...

Access_Instructions:

Access these contours of these data in Geography Markup Language (GML) using the Open Geospatial Consortium (OGC) Web Feature Service (WFS).

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:: http://nsidc.org/cgi-bin/acap.pl?service=WCS&versi...

Access_Instructions:

Access these data in GeoTIFF format using the Open Geospatial Consortium (OGC) Web Coverage Service (WCS).

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:: http://nsidc.org/cgi-bin/acap.pl?action=initiate_m...

Access_Instructions:

View these and other data in NSIDC's Antarctic Cryosphere Access Portal (A-CAP) online map viewer.

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:: http://nsidc.org/data/radarsat/index.html

Access_Instructions:

The Radarsat Antarctic Mapping Project (RAMP)

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:: http://nsidc.org/data/dems/index.html

Access_Instructions:

Polar Ice Sheet DEMs and Topographic Data at NSIDC

Fees: Not Available

Metadata_Reference_Information:

Metadata_Date: 20000510

Metadata_Review_Date: 20110725

Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: GCMD User Support Office
Contact_Organization: NASA Global Change Master Directory

Contact_Address:

Address_Type: Mailing and Physical Address
Address: Not Available
City: Lanham
State_or_Province: MD
Postal_Code: 20706
Country: USA

Contact_Voice_Telephone: Not Available

Contact_Electronic_Mail_Address: gcmduso@gcmd.gsfc.nasa.gov

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time

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