NSIDC-0076
Antarctic 5-km Digital Elevation Model from ERS-1 Altimetry
Jonathan Bamber
Antarctic 5-km Digital Elevation Model from ERS-1 Altimetry
2000-01-01
Boulder, Colorado USA
NSIDC: National Snow and Ice Data Center
http://nsidc.org/data/nsidc-0076.html
Investigator
Jonathan
Bamber
j.l.bamber@bristol.ac.uk
Bristol Glaciology Centre
School of Geographical Sciences
University Road
Bristol, BS8 1SS
UNITED KINGDOM
Investigator
R.
L.L.
Layberry
Investigator
S.
P.
Gogenini
Technical Contact
NSIDC
User Services
nsidc@nsidc.org
1 303 492-6199 x
1 303 492-2468 x
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
Boulder
CO
80309-0449
USA
EARTH SCIENCE
Cryosphere
Glaciers/Ice Sheets
Glacier Elevation/Ice Sheet Elevation
EARTH SCIENCE
Cryosphere
Glaciers/Ice Sheets
Glacier Topography/Ice Sheet Topography
EARTH SCIENCE
Cryosphere
Glaciers/Ice Sheets
Ice Sheets
EARTH SCIENCE
Land Surface
Topography
Surface Roughness
EARTH SCIENCE
Land Surface
Topography
Topographical Relief
EARTH SCIENCE
Terrestrial Hydrosphere
Glaciers/Ice Sheets
Glacier Elevation/Ice Sheet Elevation
EARTH SCIENCE
Terrestrial Hydrosphere
Glaciers/Ice Sheets
Glacier Topography/Ice Sheet Topography
EARTH SCIENCE
Terrestrial Hydrosphere
Glaciers/Ice Sheets
Ice Sheets
Altimetry
Antarctic
Antarctica
DAAC
Dem
Digital Elevation Model
EOSDIS
Ice Sheet Elevation
ice sheets
NASA
NSIDC
Surface Elevation
Topography
RA
ERS Radar Altimeter
RADAR ALTIMETERS
ERS-1
European Remote Sensing Satellite-1
SATELLITES
1994-03-01
1995-05-31
complete
-81
-65
-180
180
CONTINENT
ANTARCTICA
1 day
EOSDIS
Earth Observing System Data Information System
ESIP
Earth Science Information Partners Program
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.
English
NSIDC_DAAC
NASA DAAC at the National Snow and Ice Data Center
http://nsidc.org/daac/index.html
Data Center Contact
NSIDC
User Services
nsidc@nsidc.org
1 303 492-6199
1 303 492-2468
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
Boulder
CO
80309-0449
USA
NSIDC
National Snow and Ice Data Center
http://nsidc.org
Data Center Contact
NSIDC
User Services
nsidc@nsidc.org
1 303 492-6199
1 303 492-2468
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
Boulder
CO
80309-0449
USA
FTP
39.6 MB
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.
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.
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http://nsidc.org/data/radarsat/index.html
The Radarsat Antarctic Mapping Project (RAMP)
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http://nsidc.org/data/gis/index.html
GIS Data and Resources at NSIDC
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http://nsidc.org/data/dems/index.html
Polar Ice Sheet DEMs and Elevation Data
VIEW RELATED INFORMATION
http://nsidc.org/data/dems/index.html
Polar Ice Sheet DEMs and Topographic Data at NSIDC
USA/NASA
CEOS IDN DIF
9.7
2000-01-01
2012-07-10
corrected dist. size