DEM Generation with ICESat-2 Altimetry Data for the Three Antarctic Ice Shelves: Ross, Filchner–Ronne and Amery
The ice shelf is an important component of the Antarctic system, and the interaction between the ice sheet and the ocean often proceeds through mass variations of the ice shelf. The digital elevation model (DEM) of the ice shelf is particularly important for ice shelf elevation change and mass balan...
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ftmdpi:oai:mdpi.com:/2072-4292/13/24/5137/ 2023-08-20T04:01:03+02:00 DEM Generation with ICESat-2 Altimetry Data for the Three Antarctic Ice Shelves: Ross, Filchner–Ronne and Amery Tong Geng Shengkai Zhang Feng Xiao Jiaxing Li Yue Xuan Xiao Li Fei Li 2021-12-17 application/pdf https://doi.org/10.3390/rs13245137 EN eng Multidisciplinary Digital Publishing Institute Environmental Remote Sensing https://dx.doi.org/10.3390/rs13245137 https://creativecommons.org/licenses/by/4.0/ Remote Sensing; Volume 13; Issue 24; Pages: 5137 digital elevation model Antarctic ice shelf ICESat-2 kriging satellite altimeter Text 2021 ftmdpi https://doi.org/10.3390/rs13245137 2023-08-01T03:35:11Z The ice shelf is an important component of the Antarctic system, and the interaction between the ice sheet and the ocean often proceeds through mass variations of the ice shelf. The digital elevation model (DEM) of the ice shelf is particularly important for ice shelf elevation change and mass balance estimation. With the development of satellite altimetry technology, it became an important data source for DEM research of Antarctica. The National Aeronautics and Space Administration (NASA) Ice, Cloud, and Land Elevation Satellite-2 (ICESat-2) launched in 2018 is a significant improvement in along-track sampling rate and measurement accuracy compared with previous altimetry satellites. This study uses ordinary kriging interpolation to present new DEMs (ICESat-2 DEM hereinafter) for the three ice shelves (Ross, Filchner–Ronne and Amery) in Antarctica with ICESat-2 altimetry data. Two variogram models (linear and spherical) of ordinary kriging interpolation are compared in this paper. The result shows that the spherical model generally shows better performance and lower standard deviation (STD) than the linear models. The precision of the ultimate DEM was evaluated by NASA Operation IceBridge (OIB) data and compared with five previously published Antarctic DEM products (REMA, TanDEM-X PolarDEM, Slater DEM, Helm DEM, and Bamber DEM). The comparison reveals that the mean difference between ICESat-2 DEM of the Ross ice shelf and OIB is −0.016 m with a STD of 0.918 m, and the mean difference between ICESat-2 DEM of the Filchner–Ronne ice shelf and OIB is −0.533 m with a STD of 0.718 m. The three ICESat-2 DEMs show higher spatial resolution and elevation accuracy than five previously published Antarctic DEMs. Text Antarc* Antarctic Antarctica Filchner Ronne Ice Shelf Filchner-Ronne Ice Shelf Ice Sheet Ice Shelf Ice Shelves NASA Operation IceBridge (OIB) Ronne Ice Shelf Ross Ice Shelf MDPI Open Access Publishing Antarctic The Antarctic Ross Ice Shelf Amery ENVELOPE(-94.063,-94.063,56.565,56.565) Ronne Ice Shelf ENVELOPE(-61.000,-61.000,-78.500,-78.500) Remote Sensing 13 24 5137 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
digital elevation model Antarctic ice shelf ICESat-2 kriging satellite altimeter |
spellingShingle |
digital elevation model Antarctic ice shelf ICESat-2 kriging satellite altimeter Tong Geng Shengkai Zhang Feng Xiao Jiaxing Li Yue Xuan Xiao Li Fei Li DEM Generation with ICESat-2 Altimetry Data for the Three Antarctic Ice Shelves: Ross, Filchner–Ronne and Amery |
topic_facet |
digital elevation model Antarctic ice shelf ICESat-2 kriging satellite altimeter |
description |
The ice shelf is an important component of the Antarctic system, and the interaction between the ice sheet and the ocean often proceeds through mass variations of the ice shelf. The digital elevation model (DEM) of the ice shelf is particularly important for ice shelf elevation change and mass balance estimation. With the development of satellite altimetry technology, it became an important data source for DEM research of Antarctica. The National Aeronautics and Space Administration (NASA) Ice, Cloud, and Land Elevation Satellite-2 (ICESat-2) launched in 2018 is a significant improvement in along-track sampling rate and measurement accuracy compared with previous altimetry satellites. This study uses ordinary kriging interpolation to present new DEMs (ICESat-2 DEM hereinafter) for the three ice shelves (Ross, Filchner–Ronne and Amery) in Antarctica with ICESat-2 altimetry data. Two variogram models (linear and spherical) of ordinary kriging interpolation are compared in this paper. The result shows that the spherical model generally shows better performance and lower standard deviation (STD) than the linear models. The precision of the ultimate DEM was evaluated by NASA Operation IceBridge (OIB) data and compared with five previously published Antarctic DEM products (REMA, TanDEM-X PolarDEM, Slater DEM, Helm DEM, and Bamber DEM). The comparison reveals that the mean difference between ICESat-2 DEM of the Ross ice shelf and OIB is −0.016 m with a STD of 0.918 m, and the mean difference between ICESat-2 DEM of the Filchner–Ronne ice shelf and OIB is −0.533 m with a STD of 0.718 m. The three ICESat-2 DEMs show higher spatial resolution and elevation accuracy than five previously published Antarctic DEMs. |
format |
Text |
author |
Tong Geng Shengkai Zhang Feng Xiao Jiaxing Li Yue Xuan Xiao Li Fei Li |
author_facet |
Tong Geng Shengkai Zhang Feng Xiao Jiaxing Li Yue Xuan Xiao Li Fei Li |
author_sort |
Tong Geng |
title |
DEM Generation with ICESat-2 Altimetry Data for the Three Antarctic Ice Shelves: Ross, Filchner–Ronne and Amery |
title_short |
DEM Generation with ICESat-2 Altimetry Data for the Three Antarctic Ice Shelves: Ross, Filchner–Ronne and Amery |
title_full |
DEM Generation with ICESat-2 Altimetry Data for the Three Antarctic Ice Shelves: Ross, Filchner–Ronne and Amery |
title_fullStr |
DEM Generation with ICESat-2 Altimetry Data for the Three Antarctic Ice Shelves: Ross, Filchner–Ronne and Amery |
title_full_unstemmed |
DEM Generation with ICESat-2 Altimetry Data for the Three Antarctic Ice Shelves: Ross, Filchner–Ronne and Amery |
title_sort |
dem generation with icesat-2 altimetry data for the three antarctic ice shelves: ross, filchner–ronne and amery |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2021 |
url |
https://doi.org/10.3390/rs13245137 |
long_lat |
ENVELOPE(-94.063,-94.063,56.565,56.565) ENVELOPE(-61.000,-61.000,-78.500,-78.500) |
geographic |
Antarctic The Antarctic Ross Ice Shelf Amery Ronne Ice Shelf |
geographic_facet |
Antarctic The Antarctic Ross Ice Shelf Amery Ronne Ice Shelf |
genre |
Antarc* Antarctic Antarctica Filchner Ronne Ice Shelf Filchner-Ronne Ice Shelf Ice Sheet Ice Shelf Ice Shelves NASA Operation IceBridge (OIB) Ronne Ice Shelf Ross Ice Shelf |
genre_facet |
Antarc* Antarctic Antarctica Filchner Ronne Ice Shelf Filchner-Ronne Ice Shelf Ice Sheet Ice Shelf Ice Shelves NASA Operation IceBridge (OIB) Ronne Ice Shelf Ross Ice Shelf |
op_source |
Remote Sensing; Volume 13; Issue 24; Pages: 5137 |
op_relation |
Environmental Remote Sensing https://dx.doi.org/10.3390/rs13245137 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/rs13245137 |
container_title |
Remote Sensing |
container_volume |
13 |
container_issue |
24 |
container_start_page |
5137 |
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1774722355533185024 |