Improved geoid solution for the Weddell Sea region, supplement to: Schwabe, Joachim; Scheinert, Mirko (2014): Regional geoid of the Weddell Sea, Antarctica, from heterogeneous ground-based gravity data. Journal of Geodesy, 88(9), 821-838
We present a geoid solution for the Weddell Sea and adjacent continental Antarctic regions. There, a refined geoid is of interest, especially for oceanographic and glaciological applications. For example, to investigate the Weddell Gyre as a part of the Antarctic Circumpolar Current and, thus, of th...
Main Authors: | , |
---|---|
Format: | Dataset |
Language: | English |
Published: |
PANGAEA - Data Publisher for Earth & Environmental Science
2014
|
Subjects: | |
Online Access: | https://dx.doi.org/10.1594/pangaea.816380 https://doi.pangaea.de/10.1594/PANGAEA.816380 |
id |
ftdatacite:10.1594/pangaea.816380 |
---|---|
record_format |
openpolar |
spelling |
ftdatacite:10.1594/pangaea.816380 2023-05-15T14:05:24+02:00 Improved geoid solution for the Weddell Sea region, supplement to: Schwabe, Joachim; Scheinert, Mirko (2014): Regional geoid of the Weddell Sea, Antarctica, from heterogeneous ground-based gravity data. Journal of Geodesy, 88(9), 821-838 Schwabe, Joachim Scheinert, Mirko 2014 text/plain https://dx.doi.org/10.1594/pangaea.816380 https://doi.pangaea.de/10.1594/PANGAEA.816380 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1007/s00190-014-0724-x Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Dataset dataset Supplementary Dataset 2014 ftdatacite https://doi.org/10.1594/pangaea.816380 https://doi.org/10.1007/s00190-014-0724-x 2022-02-09T13:17:41Z We present a geoid solution for the Weddell Sea and adjacent continental Antarctic regions. There, a refined geoid is of interest, especially for oceanographic and glaciological applications. For example, to investigate the Weddell Gyre as a part of the Antarctic Circumpolar Current and, thus, of the global ocean circulation, the mean dynamic topography (MDT) is needed. These days, the marine gravity field can be inferred with high and homogeneous resolution from altimetric height profiles of the mean sea surface. However, in areas permanently covered by sea ice as well as in coastal regions, satellite altimetry features deficiencies. Focussing on the Weddell Sea, these aspects are investigated in detail. In these areas, ground-based data that have not been used for geoid computation so far provide additional information in comparison with the existing high-resolution global gravity field models such as EGM2008. The geoid computation is based on the remove–compute–restore approach making use of least-squares collocation. The residual geoid with respect to a release 4 GOCE model adds up to two meters and more in the near-coastal and continental areas of the Weddell Sea region, also in comparison with EGM2008. Consequently, the thus refined geoid serves to compute new estimates of the regional MDT and geostrophic currents. Dataset Antarc* Antarctic Antarctica Sea ice Weddell Sea DataCite Metadata Store (German National Library of Science and Technology) Antarctic The Antarctic Weddell Sea Weddell |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
description |
We present a geoid solution for the Weddell Sea and adjacent continental Antarctic regions. There, a refined geoid is of interest, especially for oceanographic and glaciological applications. For example, to investigate the Weddell Gyre as a part of the Antarctic Circumpolar Current and, thus, of the global ocean circulation, the mean dynamic topography (MDT) is needed. These days, the marine gravity field can be inferred with high and homogeneous resolution from altimetric height profiles of the mean sea surface. However, in areas permanently covered by sea ice as well as in coastal regions, satellite altimetry features deficiencies. Focussing on the Weddell Sea, these aspects are investigated in detail. In these areas, ground-based data that have not been used for geoid computation so far provide additional information in comparison with the existing high-resolution global gravity field models such as EGM2008. The geoid computation is based on the remove–compute–restore approach making use of least-squares collocation. The residual geoid with respect to a release 4 GOCE model adds up to two meters and more in the near-coastal and continental areas of the Weddell Sea region, also in comparison with EGM2008. Consequently, the thus refined geoid serves to compute new estimates of the regional MDT and geostrophic currents. |
format |
Dataset |
author |
Schwabe, Joachim Scheinert, Mirko |
spellingShingle |
Schwabe, Joachim Scheinert, Mirko Improved geoid solution for the Weddell Sea region, supplement to: Schwabe, Joachim; Scheinert, Mirko (2014): Regional geoid of the Weddell Sea, Antarctica, from heterogeneous ground-based gravity data. Journal of Geodesy, 88(9), 821-838 |
author_facet |
Schwabe, Joachim Scheinert, Mirko |
author_sort |
Schwabe, Joachim |
title |
Improved geoid solution for the Weddell Sea region, supplement to: Schwabe, Joachim; Scheinert, Mirko (2014): Regional geoid of the Weddell Sea, Antarctica, from heterogeneous ground-based gravity data. Journal of Geodesy, 88(9), 821-838 |
title_short |
Improved geoid solution for the Weddell Sea region, supplement to: Schwabe, Joachim; Scheinert, Mirko (2014): Regional geoid of the Weddell Sea, Antarctica, from heterogeneous ground-based gravity data. Journal of Geodesy, 88(9), 821-838 |
title_full |
Improved geoid solution for the Weddell Sea region, supplement to: Schwabe, Joachim; Scheinert, Mirko (2014): Regional geoid of the Weddell Sea, Antarctica, from heterogeneous ground-based gravity data. Journal of Geodesy, 88(9), 821-838 |
title_fullStr |
Improved geoid solution for the Weddell Sea region, supplement to: Schwabe, Joachim; Scheinert, Mirko (2014): Regional geoid of the Weddell Sea, Antarctica, from heterogeneous ground-based gravity data. Journal of Geodesy, 88(9), 821-838 |
title_full_unstemmed |
Improved geoid solution for the Weddell Sea region, supplement to: Schwabe, Joachim; Scheinert, Mirko (2014): Regional geoid of the Weddell Sea, Antarctica, from heterogeneous ground-based gravity data. Journal of Geodesy, 88(9), 821-838 |
title_sort |
improved geoid solution for the weddell sea region, supplement to: schwabe, joachim; scheinert, mirko (2014): regional geoid of the weddell sea, antarctica, from heterogeneous ground-based gravity data. journal of geodesy, 88(9), 821-838 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2014 |
url |
https://dx.doi.org/10.1594/pangaea.816380 https://doi.pangaea.de/10.1594/PANGAEA.816380 |
geographic |
Antarctic The Antarctic Weddell Sea Weddell |
geographic_facet |
Antarctic The Antarctic Weddell Sea Weddell |
genre |
Antarc* Antarctic Antarctica Sea ice Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctica Sea ice Weddell Sea |
op_relation |
https://dx.doi.org/10.1007/s00190-014-0724-x |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.816380 https://doi.org/10.1007/s00190-014-0724-x |
_version_ |
1766277286255919104 |