Assessment of altimetry using ground-based GPS data from the 88S Traverse, Antarctica, in support of ICESat-2
We conducted a 750 km kinematic GPS survey, referred to as the 88S Traverse, based out of South Pole Station, Antarctica, between December 2017 and January 2018. This ground-based survey was designed to validate spaceborne altimetry and airborne altimetry developed at NASA. The 88S Traverse intersec...
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ftdoajarticles:oai:doaj.org/article:7b9afa7487454770ae4aad4bfcab7f67 2023-05-15T13:07:33+02:00 Assessment of altimetry using ground-based GPS data from the 88S Traverse, Antarctica, in support of ICESat-2 K. M. Brunt T. A. Neumann C. F. Larsen 2019-02-01T00:00:00Z https://doi.org/10.5194/tc-13-579-2019 https://doaj.org/article/7b9afa7487454770ae4aad4bfcab7f67 EN eng Copernicus Publications https://www.the-cryosphere.net/13/579/2019/tc-13-579-2019.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-13-579-2019 1994-0416 1994-0424 https://doaj.org/article/7b9afa7487454770ae4aad4bfcab7f67 The Cryosphere, Vol 13, Pp 579-590 (2019) Environmental sciences GE1-350 Geology QE1-996.5 article 2019 ftdoajarticles https://doi.org/10.5194/tc-13-579-2019 2022-12-31T05:40:16Z We conducted a 750 km kinematic GPS survey, referred to as the 88S Traverse, based out of South Pole Station, Antarctica, between December 2017 and January 2018. This ground-based survey was designed to validate spaceborne altimetry and airborne altimetry developed at NASA. The 88S Traverse intersects 20 % of the ICESat-2 satellite orbits on a route that has been flown by two different Operation IceBridge airborne laser altimeters: the Airborne Topographic Mapper (ATM; 26 October 2014) and the University of Alaska Fairbanks (UAF) Lidar (30 November and 3 December 2017). Here we present an overview of the ground-based GPS data quality and a quantitative assessment of the airborne laser altimetry over a flat section of the ice sheet interior. Results indicate that the GPS data are internally consistent ( 1.1±4.1 cm). Relative to the ground-based 88S Traverse data, the elevation biases for ATM and the UAF lidar range from −9.5 to 3.6 cm, while surface measurement precisions are equal to or better than 14.1 cm. These results suggest that the ground-based GPS data and airborne altimetry data are appropriate for the validation of ICESat-2 surface elevation data. Article in Journal/Newspaper Airborne Topographic Mapper Antarc* Antarctica Ice Sheet South pole South pole The Cryosphere Alaska Directory of Open Access Journals: DOAJ Articles Fairbanks South Pole The Cryosphere 13 2 579 590 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental sciences GE1-350 Geology QE1-996.5 |
spellingShingle |
Environmental sciences GE1-350 Geology QE1-996.5 K. M. Brunt T. A. Neumann C. F. Larsen Assessment of altimetry using ground-based GPS data from the 88S Traverse, Antarctica, in support of ICESat-2 |
topic_facet |
Environmental sciences GE1-350 Geology QE1-996.5 |
description |
We conducted a 750 km kinematic GPS survey, referred to as the 88S Traverse, based out of South Pole Station, Antarctica, between December 2017 and January 2018. This ground-based survey was designed to validate spaceborne altimetry and airborne altimetry developed at NASA. The 88S Traverse intersects 20 % of the ICESat-2 satellite orbits on a route that has been flown by two different Operation IceBridge airborne laser altimeters: the Airborne Topographic Mapper (ATM; 26 October 2014) and the University of Alaska Fairbanks (UAF) Lidar (30 November and 3 December 2017). Here we present an overview of the ground-based GPS data quality and a quantitative assessment of the airborne laser altimetry over a flat section of the ice sheet interior. Results indicate that the GPS data are internally consistent ( 1.1±4.1 cm). Relative to the ground-based 88S Traverse data, the elevation biases for ATM and the UAF lidar range from −9.5 to 3.6 cm, while surface measurement precisions are equal to or better than 14.1 cm. These results suggest that the ground-based GPS data and airborne altimetry data are appropriate for the validation of ICESat-2 surface elevation data. |
format |
Article in Journal/Newspaper |
author |
K. M. Brunt T. A. Neumann C. F. Larsen |
author_facet |
K. M. Brunt T. A. Neumann C. F. Larsen |
author_sort |
K. M. Brunt |
title |
Assessment of altimetry using ground-based GPS data from the 88S Traverse, Antarctica, in support of ICESat-2 |
title_short |
Assessment of altimetry using ground-based GPS data from the 88S Traverse, Antarctica, in support of ICESat-2 |
title_full |
Assessment of altimetry using ground-based GPS data from the 88S Traverse, Antarctica, in support of ICESat-2 |
title_fullStr |
Assessment of altimetry using ground-based GPS data from the 88S Traverse, Antarctica, in support of ICESat-2 |
title_full_unstemmed |
Assessment of altimetry using ground-based GPS data from the 88S Traverse, Antarctica, in support of ICESat-2 |
title_sort |
assessment of altimetry using ground-based gps data from the 88s traverse, antarctica, in support of icesat-2 |
publisher |
Copernicus Publications |
publishDate |
2019 |
url |
https://doi.org/10.5194/tc-13-579-2019 https://doaj.org/article/7b9afa7487454770ae4aad4bfcab7f67 |
geographic |
Fairbanks South Pole |
geographic_facet |
Fairbanks South Pole |
genre |
Airborne Topographic Mapper Antarc* Antarctica Ice Sheet South pole South pole The Cryosphere Alaska |
genre_facet |
Airborne Topographic Mapper Antarc* Antarctica Ice Sheet South pole South pole The Cryosphere Alaska |
op_source |
The Cryosphere, Vol 13, Pp 579-590 (2019) |
op_relation |
https://www.the-cryosphere.net/13/579/2019/tc-13-579-2019.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-13-579-2019 1994-0416 1994-0424 https://doaj.org/article/7b9afa7487454770ae4aad4bfcab7f67 |
op_doi |
https://doi.org/10.5194/tc-13-579-2019 |
container_title |
The Cryosphere |
container_volume |
13 |
container_issue |
2 |
container_start_page |
579 |
op_container_end_page |
590 |
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1766059328860585984 |