A NEW HIGH-RESOLUTION ELEVATION MODEL OF GREENLAND DERIVED FROM TANDEM-X
In this paper we present for the first time the new digital elevation model (DEM) for Greenland produced by the TanDEM-X (TerraSAR add-on for digital elevation measurement) mission. The new, full coverage DEM of Greenland has a resolution of 0.4 arc seconds corresponding to 12 m. It is composed of m...
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ftdoajarticles:oai:doaj.org/article:1e9d2c2432864fcd991266118c81cb39 2023-05-15T15:11:23+02:00 A NEW HIGH-RESOLUTION ELEVATION MODEL OF GREENLAND DERIVED FROM TANDEM-X B. Wessel A. Bertram A. Gruber S. Bemm S. Dech 2016-06-01T00:00:00Z https://doi.org/10.5194/isprs-annals-III-7-9-2016 https://doaj.org/article/1e9d2c2432864fcd991266118c81cb39 EN eng Copernicus Publications http://www.isprs-ann-photogramm-remote-sens-spatial-inf-sci.net/III-7/9/2016/isprs-annals-III-7-9-2016.pdf https://doaj.org/toc/2194-9042 https://doaj.org/toc/2194-9050 2194-9042 2194-9050 doi:10.5194/isprs-annals-III-7-9-2016 https://doaj.org/article/1e9d2c2432864fcd991266118c81cb39 ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol III-7, Pp 9-16 (2016) Technology T Engineering (General). Civil engineering (General) TA1-2040 Applied optics. Photonics TA1501-1820 article 2016 ftdoajarticles https://doi.org/10.5194/isprs-annals-III-7-9-2016 2023-01-08T01:29:24Z In this paper we present for the first time the new digital elevation model (DEM) for Greenland produced by the TanDEM-X (TerraSAR add-on for digital elevation measurement) mission. The new, full coverage DEM of Greenland has a resolution of 0.4 arc seconds corresponding to 12 m. It is composed of more than 7.000 interferometric synthetic aperture radar (InSAR) DEM scenes. X-Band SAR penetrates the snow and ice pack by several meters depending on the structures within the snow, the acquisition parameters, and the dielectricity constant of the medium. Hence, the resulting SAR measurements do not represent the surface but the elevation of the mean phase center of the backscattered signal. Special adaptations on the nominal TanDEM-X DEM generation are conducted to maintain these characteristics and not to raise or even deform the DEM to surface reference data. For the block adjustment, only on the outer coastal regions ICESat (Ice, Cloud, and land Elevation Satellite) elevations as ground control points (GCPs) are used where mostly rock and surface scattering predominates. Comparisons with ICESat data and snow facies are performed. In the inner ice and snow pack, the final X-Band InSAR DEM of Greenland lies up to 10 m below the ICESat measurements. At the outer coastal regions it corresponds well with the GCPs. The resulting DEM is outstanding due to its resolution, accuracy and full coverage. It provides a high resolution dataset as basis for research on climate change in the arctic. Article in Journal/Newspaper Arctic Climate change Greenland Directory of Open Access Journals: DOAJ Articles Arctic Greenland ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences III-7 9 16 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Technology T Engineering (General). Civil engineering (General) TA1-2040 Applied optics. Photonics TA1501-1820 |
spellingShingle |
Technology T Engineering (General). Civil engineering (General) TA1-2040 Applied optics. Photonics TA1501-1820 B. Wessel A. Bertram A. Gruber S. Bemm S. Dech A NEW HIGH-RESOLUTION ELEVATION MODEL OF GREENLAND DERIVED FROM TANDEM-X |
topic_facet |
Technology T Engineering (General). Civil engineering (General) TA1-2040 Applied optics. Photonics TA1501-1820 |
description |
In this paper we present for the first time the new digital elevation model (DEM) for Greenland produced by the TanDEM-X (TerraSAR add-on for digital elevation measurement) mission. The new, full coverage DEM of Greenland has a resolution of 0.4 arc seconds corresponding to 12 m. It is composed of more than 7.000 interferometric synthetic aperture radar (InSAR) DEM scenes. X-Band SAR penetrates the snow and ice pack by several meters depending on the structures within the snow, the acquisition parameters, and the dielectricity constant of the medium. Hence, the resulting SAR measurements do not represent the surface but the elevation of the mean phase center of the backscattered signal. Special adaptations on the nominal TanDEM-X DEM generation are conducted to maintain these characteristics and not to raise or even deform the DEM to surface reference data. For the block adjustment, only on the outer coastal regions ICESat (Ice, Cloud, and land Elevation Satellite) elevations as ground control points (GCPs) are used where mostly rock and surface scattering predominates. Comparisons with ICESat data and snow facies are performed. In the inner ice and snow pack, the final X-Band InSAR DEM of Greenland lies up to 10 m below the ICESat measurements. At the outer coastal regions it corresponds well with the GCPs. The resulting DEM is outstanding due to its resolution, accuracy and full coverage. It provides a high resolution dataset as basis for research on climate change in the arctic. |
format |
Article in Journal/Newspaper |
author |
B. Wessel A. Bertram A. Gruber S. Bemm S. Dech |
author_facet |
B. Wessel A. Bertram A. Gruber S. Bemm S. Dech |
author_sort |
B. Wessel |
title |
A NEW HIGH-RESOLUTION ELEVATION MODEL OF GREENLAND DERIVED FROM TANDEM-X |
title_short |
A NEW HIGH-RESOLUTION ELEVATION MODEL OF GREENLAND DERIVED FROM TANDEM-X |
title_full |
A NEW HIGH-RESOLUTION ELEVATION MODEL OF GREENLAND DERIVED FROM TANDEM-X |
title_fullStr |
A NEW HIGH-RESOLUTION ELEVATION MODEL OF GREENLAND DERIVED FROM TANDEM-X |
title_full_unstemmed |
A NEW HIGH-RESOLUTION ELEVATION MODEL OF GREENLAND DERIVED FROM TANDEM-X |
title_sort |
new high-resolution elevation model of greenland derived from tandem-x |
publisher |
Copernicus Publications |
publishDate |
2016 |
url |
https://doi.org/10.5194/isprs-annals-III-7-9-2016 https://doaj.org/article/1e9d2c2432864fcd991266118c81cb39 |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Climate change Greenland |
genre_facet |
Arctic Climate change Greenland |
op_source |
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol III-7, Pp 9-16 (2016) |
op_relation |
http://www.isprs-ann-photogramm-remote-sens-spatial-inf-sci.net/III-7/9/2016/isprs-annals-III-7-9-2016.pdf https://doaj.org/toc/2194-9042 https://doaj.org/toc/2194-9050 2194-9042 2194-9050 doi:10.5194/isprs-annals-III-7-9-2016 https://doaj.org/article/1e9d2c2432864fcd991266118c81cb39 |
op_doi |
https://doi.org/10.5194/isprs-annals-III-7-9-2016 |
container_title |
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
container_volume |
III-7 |
container_start_page |
9 |
op_container_end_page |
16 |
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1766342243204988928 |