TanDEM-X PolarDEM 90 m of Antarctica: generation and error characterization
We present the generation and validation of an updated version of the TanDEM-X digital elevation model (DEM) of Antarctica: the TanDEM-X PolarDEM 90 m of Antarctica. Improvements compared to the global TanDEM-X DEM version comprise filling gaps with newer bistatic synthetic aperture radar (SAR) acqu...
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Copernicus Publications
2021
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00058947 2024-09-15T17:42:21+00:00 TanDEM-X PolarDEM 90 m of Antarctica: generation and error characterization Wessel, Birgit Huber, Martin Wohlfart, Christian Bertram, Adina Osterkamp, Nicole Marschalk, Ursula Gruber, Astrid Reuß, Felix Abdullahi, Sahra Georg, Isabel Roth, Achim 2021-11 electronic https://doi.org/10.5194/tc-15-5241-2021 https://noa.gwlb.de/receive/cop_mods_00058947 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00058561/tc-15-5241-2021.pdf https://tc.copernicus.org/articles/15/5241/2021/tc-15-5241-2021.pdf eng eng Copernicus Publications The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-15-5241-2021 https://noa.gwlb.de/receive/cop_mods_00058947 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00058561/tc-15-5241-2021.pdf https://tc.copernicus.org/articles/15/5241/2021/tc-15-5241-2021.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2021 ftnonlinearchiv https://doi.org/10.5194/tc-15-5241-2021 2024-06-26T04:36:34Z We present the generation and validation of an updated version of the TanDEM-X digital elevation model (DEM) of Antarctica: the TanDEM-X PolarDEM 90 m of Antarctica. Improvements compared to the global TanDEM-X DEM version comprise filling gaps with newer bistatic synthetic aperture radar (SAR) acquisitions of the TerraSAR-X and TanDEM-X satellites, interpolation of smaller voids, smoothing of noisy areas, and replacement of frozen or open sea areas with geoid undulations. For the latter, a new semi-automatic editing approach allowed for the delineation of the coastline from DEM and amplitude data. Finally, the DEM was transformed into the cartographic Antarctic Polar Stereographic projection with a homogeneous metric spacing in northing and easting of 90 m. As X-band SAR penetrates the snow and ice pack by several meters, a new concept for absolute height adjustment was set up that relies on areas with stable penetration conditions and on ICESat (Ice, Cloud, and land Elevation Satellite) elevations. After DEM generation and editing, a sophisticated height error characterization of the whole Antarctic continent with ICESat data was carried out, and a validation over blue ice achieved a mean vertical height error of just −0.3 m ± 2.5 m standard deviation. The filled and edited Antarctic TanDEM-X PolarDEM 90 m is outstanding due to its accuracy, homogeneity, and coverage completeness. It is freely available for scientific purposes and provides a high-resolution data set as basis for polar research, such as ice velocity, mass balance estimation, or orthorectification. Article in Journal/Newspaper Antarc* Antarctic Antarctica ice pack The Cryosphere Niedersächsisches Online-Archiv NOA The Cryosphere 15 11 5241 5260 |
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Open Polar |
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Niedersächsisches Online-Archiv NOA |
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ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Wessel, Birgit Huber, Martin Wohlfart, Christian Bertram, Adina Osterkamp, Nicole Marschalk, Ursula Gruber, Astrid Reuß, Felix Abdullahi, Sahra Georg, Isabel Roth, Achim TanDEM-X PolarDEM 90 m of Antarctica: generation and error characterization |
topic_facet |
article Verlagsveröffentlichung |
description |
We present the generation and validation of an updated version of the TanDEM-X digital elevation model (DEM) of Antarctica: the TanDEM-X PolarDEM 90 m of Antarctica. Improvements compared to the global TanDEM-X DEM version comprise filling gaps with newer bistatic synthetic aperture radar (SAR) acquisitions of the TerraSAR-X and TanDEM-X satellites, interpolation of smaller voids, smoothing of noisy areas, and replacement of frozen or open sea areas with geoid undulations. For the latter, a new semi-automatic editing approach allowed for the delineation of the coastline from DEM and amplitude data. Finally, the DEM was transformed into the cartographic Antarctic Polar Stereographic projection with a homogeneous metric spacing in northing and easting of 90 m. As X-band SAR penetrates the snow and ice pack by several meters, a new concept for absolute height adjustment was set up that relies on areas with stable penetration conditions and on ICESat (Ice, Cloud, and land Elevation Satellite) elevations. After DEM generation and editing, a sophisticated height error characterization of the whole Antarctic continent with ICESat data was carried out, and a validation over blue ice achieved a mean vertical height error of just −0.3 m ± 2.5 m standard deviation. The filled and edited Antarctic TanDEM-X PolarDEM 90 m is outstanding due to its accuracy, homogeneity, and coverage completeness. It is freely available for scientific purposes and provides a high-resolution data set as basis for polar research, such as ice velocity, mass balance estimation, or orthorectification. |
format |
Article in Journal/Newspaper |
author |
Wessel, Birgit Huber, Martin Wohlfart, Christian Bertram, Adina Osterkamp, Nicole Marschalk, Ursula Gruber, Astrid Reuß, Felix Abdullahi, Sahra Georg, Isabel Roth, Achim |
author_facet |
Wessel, Birgit Huber, Martin Wohlfart, Christian Bertram, Adina Osterkamp, Nicole Marschalk, Ursula Gruber, Astrid Reuß, Felix Abdullahi, Sahra Georg, Isabel Roth, Achim |
author_sort |
Wessel, Birgit |
title |
TanDEM-X PolarDEM 90 m of Antarctica: generation and error characterization |
title_short |
TanDEM-X PolarDEM 90 m of Antarctica: generation and error characterization |
title_full |
TanDEM-X PolarDEM 90 m of Antarctica: generation and error characterization |
title_fullStr |
TanDEM-X PolarDEM 90 m of Antarctica: generation and error characterization |
title_full_unstemmed |
TanDEM-X PolarDEM 90 m of Antarctica: generation and error characterization |
title_sort |
tandem-x polardem 90 m of antarctica: generation and error characterization |
publisher |
Copernicus Publications |
publishDate |
2021 |
url |
https://doi.org/10.5194/tc-15-5241-2021 https://noa.gwlb.de/receive/cop_mods_00058947 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00058561/tc-15-5241-2021.pdf https://tc.copernicus.org/articles/15/5241/2021/tc-15-5241-2021.pdf |
genre |
Antarc* Antarctic Antarctica ice pack The Cryosphere |
genre_facet |
Antarc* Antarctic Antarctica ice pack The Cryosphere |
op_relation |
The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-15-5241-2021 https://noa.gwlb.de/receive/cop_mods_00058947 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00058561/tc-15-5241-2021.pdf https://tc.copernicus.org/articles/15/5241/2021/tc-15-5241-2021.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-15-5241-2021 |
container_title |
The Cryosphere |
container_volume |
15 |
container_issue |
11 |
container_start_page |
5241 |
op_container_end_page |
5260 |
_version_ |
1810488876479807488 |