Reconstructing continuous ice sheet elevation changes in the Amundsen Sea Sector during 2003-2021 by merging multi-altimeter observations ...
<!--!introduction!--> The Amundsen Sea (AS) sector in West Antarctica accounts for a significant proportion of Earth’s ice losses and is the largest contributor of Antarctica’s mass loss. To evaluate its contribution to global sea-level rise, we reconstruct the long-term continuous surface ele...
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| Format: | Conference Object |
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GFZ German Research Centre for Geosciences
2023
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| Online Access: | https://dx.doi.org/10.57757/iugg23-1163 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5017434 |
| Summary: | <!--!introduction!--> The Amundsen Sea (AS) sector in West Antarctica accounts for a significant proportion of Earth’s ice losses and is the largest contributor of Antarctica’s mass loss. To evaluate its contribution to global sea-level rise, we reconstruct the long-term continuous surface elevation changes (CSEC) record of the AS sector by using an improved least-squares plane fitting method (ILSPFM) to merge altimeter data from Envisat, ICESat, CryoSat-2, and ICESat-2 missions during 2003-2021. The accuracy of CSEC is improved by 25.9% using ILSPFM. The average rate of CSEC in the AS sector was -24.25 ± 0.48 cm yr -1 during 2003 to 2021. The largest signals of SEC are found over Pine Island, Thwaites, and Pope Glaciers, with the largest decline of SEC over Pope Glacier with a total SEC of -82.44 ± 7.21 m and an annual change rate of -4.34 ± 0.38 m yr -1 . The ridge between Pine Island and Thwaites Glaciers is found in the AS sector, indicating that the change of ice sheet is dynamic thinning and ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ... |
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