Validation of satellite altimetry by kinematic GNSS in central East Antarctica
Ice-surface elevation profiles of more than 30 000 km in total length are derived from kinematic GNSS (GPS and the Russian GLONASS) observations on sledge convoy vehicles along traverses between Vostok Station and the East Antarctic coast. These profiles have accuracies between 4 and 9 cm. They are...
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00010259 2023-05-15T13:34:49+02:00 Validation of satellite altimetry by kinematic GNSS in central East Antarctica Schröder, Ludwig Richter, Andreas Fedorov, Denis V. Eberlein, Lutz Brovkov, Evgeny V. Popov, Sergey V. Knöfel, Christoph Horwath, Martin Dietrich, Reinhard Matveev, Alexey Y. Scheinert, Mirko Lukin, Valery V. 2017-05 electronic https://doi.org/10.5194/tc-11-1111-2017 https://noa.gwlb.de/receive/cop_mods_00010259 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00010216/tc-11-1111-2017.pdf https://tc.copernicus.org/articles/11/1111/2017/tc-11-1111-2017.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-11-1111-2017 https://noa.gwlb.de/receive/cop_mods_00010259 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00010216/tc-11-1111-2017.pdf https://tc.copernicus.org/articles/11/1111/2017/tc-11-1111-2017.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2017 ftnonlinearchiv https://doi.org/10.5194/tc-11-1111-2017 2022-02-08T22:57:09Z Ice-surface elevation profiles of more than 30 000 km in total length are derived from kinematic GNSS (GPS and the Russian GLONASS) observations on sledge convoy vehicles along traverses between Vostok Station and the East Antarctic coast. These profiles have accuracies between 4 and 9 cm. They are used to validate elevation data sets from both radar and laser satellite altimetry as well as four digital elevation models. A crossover analysis with three different processing versions of Envisat radar altimetry elevation profiles yields a clear preference for the relocation method over the direct method of slope correction and for threshold retrackers over functional fit algorithms. The validation of CryoSat-2 low-resolution mode and SARIn mode data sets documents the progress made from baseline B to C elevation products. ICESat laser altimetry data are demonstrated to be accurate to a few decimetres over a wide range of surface slopes. A crossover adjustment in the region of subglacial Lake Vostok combining ICESat elevation data with our GNSS profiles yields a new set of ICESat laser campaign biases and provides new, independent evidence for the stability of the ice-surface elevation above the lake. The evaluation of the digital elevation models reveals the benefits of combining laser and radar altimetry. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica The Cryosphere Niedersächsisches Online-Archiv NOA Antarctic East Antarctica Lake Vostok ENVELOPE(106.000,106.000,-77.500,-77.500) Vostok Station ENVELOPE(106.837,106.837,-78.464,-78.464) The Cryosphere 11 3 1111 1130 |
institution |
Open Polar |
collection |
Niedersächsisches Online-Archiv NOA |
op_collection_id |
ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Schröder, Ludwig Richter, Andreas Fedorov, Denis V. Eberlein, Lutz Brovkov, Evgeny V. Popov, Sergey V. Knöfel, Christoph Horwath, Martin Dietrich, Reinhard Matveev, Alexey Y. Scheinert, Mirko Lukin, Valery V. Validation of satellite altimetry by kinematic GNSS in central East Antarctica |
topic_facet |
article Verlagsveröffentlichung |
description |
Ice-surface elevation profiles of more than 30 000 km in total length are derived from kinematic GNSS (GPS and the Russian GLONASS) observations on sledge convoy vehicles along traverses between Vostok Station and the East Antarctic coast. These profiles have accuracies between 4 and 9 cm. They are used to validate elevation data sets from both radar and laser satellite altimetry as well as four digital elevation models. A crossover analysis with three different processing versions of Envisat radar altimetry elevation profiles yields a clear preference for the relocation method over the direct method of slope correction and for threshold retrackers over functional fit algorithms. The validation of CryoSat-2 low-resolution mode and SARIn mode data sets documents the progress made from baseline B to C elevation products. ICESat laser altimetry data are demonstrated to be accurate to a few decimetres over a wide range of surface slopes. A crossover adjustment in the region of subglacial Lake Vostok combining ICESat elevation data with our GNSS profiles yields a new set of ICESat laser campaign biases and provides new, independent evidence for the stability of the ice-surface elevation above the lake. The evaluation of the digital elevation models reveals the benefits of combining laser and radar altimetry. |
format |
Article in Journal/Newspaper |
author |
Schröder, Ludwig Richter, Andreas Fedorov, Denis V. Eberlein, Lutz Brovkov, Evgeny V. Popov, Sergey V. Knöfel, Christoph Horwath, Martin Dietrich, Reinhard Matveev, Alexey Y. Scheinert, Mirko Lukin, Valery V. |
author_facet |
Schröder, Ludwig Richter, Andreas Fedorov, Denis V. Eberlein, Lutz Brovkov, Evgeny V. Popov, Sergey V. Knöfel, Christoph Horwath, Martin Dietrich, Reinhard Matveev, Alexey Y. Scheinert, Mirko Lukin, Valery V. |
author_sort |
Schröder, Ludwig |
title |
Validation of satellite altimetry by kinematic GNSS in central East Antarctica |
title_short |
Validation of satellite altimetry by kinematic GNSS in central East Antarctica |
title_full |
Validation of satellite altimetry by kinematic GNSS in central East Antarctica |
title_fullStr |
Validation of satellite altimetry by kinematic GNSS in central East Antarctica |
title_full_unstemmed |
Validation of satellite altimetry by kinematic GNSS in central East Antarctica |
title_sort |
validation of satellite altimetry by kinematic gnss in central east antarctica |
publisher |
Copernicus Publications |
publishDate |
2017 |
url |
https://doi.org/10.5194/tc-11-1111-2017 https://noa.gwlb.de/receive/cop_mods_00010259 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00010216/tc-11-1111-2017.pdf https://tc.copernicus.org/articles/11/1111/2017/tc-11-1111-2017.pdf |
long_lat |
ENVELOPE(106.000,106.000,-77.500,-77.500) ENVELOPE(106.837,106.837,-78.464,-78.464) |
geographic |
Antarctic East Antarctica Lake Vostok Vostok Station |
geographic_facet |
Antarctic East Antarctica Lake Vostok Vostok Station |
genre |
Antarc* Antarctic Antarctica East Antarctica The Cryosphere |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica 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-11-1111-2017 https://noa.gwlb.de/receive/cop_mods_00010259 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00010216/tc-11-1111-2017.pdf https://tc.copernicus.org/articles/11/1111/2017/tc-11-1111-2017.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-11-1111-2017 |
container_title |
The Cryosphere |
container_volume |
11 |
container_issue |
3 |
container_start_page |
1111 |
op_container_end_page |
1130 |
_version_ |
1766057919725436928 |