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 space-borne altimetry and airborne altimetry developed at NASA. The 88S Traverse interse...
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2019
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| Online Access: | http://hdl.handle.net/2060/20190001468 |
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ftnasantrs:oai:casi.ntrs.nasa.gov:20190001468 |
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ftnasantrs:oai:casi.ntrs.nasa.gov:20190001468 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 Larsen, Christopher F. Brunt, Kelly M. Neumann, Thomas A. Unclassified, Unlimited, Publicly available February 18, 2019 application/pdf http://hdl.handle.net/2060/20190001468 unknown Document ID: 20190001468 http://hdl.handle.net/2060/20190001468 Copyright, Use by or on behalf of the U.S. Government permitted CASI Geosciences (General) GSFC-E-DAA-TN65719 The Cryosphere (ISSN 1994-0416) (e-ISSN 1994-0424); 13; 2; 579-590 2019 ftnasantrs 2019-07-20T23:04:55Z 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 space-borne 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. Other/Unknown Material Airborne Topographic Mapper Antarc* Antarctica Ice Sheet South pole South pole Alaska NASA Technical Reports Server (NTRS) Fairbanks South Pole |
| institution |
Open Polar |
| collection |
NASA Technical Reports Server (NTRS) |
| op_collection_id |
ftnasantrs |
| language |
unknown |
| topic |
Geosciences (General) |
| spellingShingle |
Geosciences (General) Larsen, Christopher F. Brunt, Kelly M. Neumann, Thomas A. Assessment of Altimetry Using Ground-Based GPS Data from the 88S Traverse, Antarctica, in Support of ICESat-2 |
| topic_facet |
Geosciences (General) |
| 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 space-borne 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 |
Other/Unknown Material |
| author |
Larsen, Christopher F. Brunt, Kelly M. Neumann, Thomas A. |
| author_facet |
Larsen, Christopher F. Brunt, Kelly M. Neumann, Thomas A. |
| author_sort |
Larsen, Christopher F. |
| 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 |
| publishDate |
2019 |
| url |
http://hdl.handle.net/2060/20190001468 |
| op_coverage |
Unclassified, Unlimited, Publicly available |
| geographic |
Fairbanks South Pole |
| geographic_facet |
Fairbanks South Pole |
| genre |
Airborne Topographic Mapper Antarc* Antarctica Ice Sheet South pole South pole Alaska |
| genre_facet |
Airborne Topographic Mapper Antarc* Antarctica Ice Sheet South pole South pole Alaska |
| op_source |
CASI |
| op_relation |
Document ID: 20190001468 http://hdl.handle.net/2060/20190001468 |
| op_rights |
Copyright, Use by or on behalf of the U.S. Government permitted |
| _version_ |
1766059121502584832 |