Recent Antarctic ice mass loss from radar interferometry and regional climate modelling
Large uncertainties remain in the current and future contribution to sea level rise from Antarctica. Climate warming may increase snowfall in the continent’s interior1,2,3, but enhance glacier discharge at the coast where warmer air and ocean temperatures erode the buttressing ice shelves4,5,6,7,8,9...
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ftoceanrep:oai:oceanrep.geomar.de:48429 2023-05-15T14:00:49+02:00 Recent Antarctic ice mass loss from radar interferometry and regional climate modelling Rignot, Eric Bamber, Jonathan L. van den Broeke, Michiel R. Davis, Curt Li, Yonghong van de Berg, Willem Jan van Meijgaard, Erik 2008 text https://oceanrep.geomar.de/id/eprint/48429/ https://oceanrep.geomar.de/id/eprint/48429/1/Rignot%20et%20al.pdf https://doi.org/10.1038/ngeo102 en eng Nature Publishing Group https://oceanrep.geomar.de/id/eprint/48429/1/Rignot%20et%20al.pdf Rignot, E., Bamber, J. L., van den Broeke, M. R., Davis, C., Li, Y., van de Berg, W. J. and van Meijgaard, E. (2008) Recent Antarctic ice mass loss from radar interferometry and regional climate modelling. Nature Geoscience, 1 (2). pp. 106-110. DOI 10.1038/ngeo102 <https://doi.org/10.1038/ngeo102>. doi:10.1038/ngeo102 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2008 ftoceanrep https://doi.org/10.1038/ngeo102 2023-04-07T15:48:25Z Large uncertainties remain in the current and future contribution to sea level rise from Antarctica. Climate warming may increase snowfall in the continent’s interior1,2,3, but enhance glacier discharge at the coast where warmer air and ocean temperatures erode the buttressing ice shelves4,5,6,7,8,9,10,11. Here, we use satellite interferometric synthetic-aperture radar observations from 1992 to 2006 covering 85% of Antarctica’s coastline to estimate the total mass flux into the ocean. We compare the mass fluxes from large drainage basin units with interior snow accumulation calculated from a regional atmospheric climate model for 1980 to 2004. In East Antarctica, small glacier losses in Wilkes Land and glacier gains at the mouths of the Filchner and Ross ice shelves combine to a near-zero loss of 4±61 Gt yr−1. In West Antarctica, widespread losses along the Bellingshausen and Amundsen seas increased the ice sheet loss by 59% in 10 years to reach 132±60 Gt yr−1 in 2006. In the Peninsula, losses increased by 140% to reach 60±46 Gt yr−1 in 2006. Losses are concentrated along narrow channels occupied by outlet glaciers and are caused by ongoing and past glacier acceleration. Changes in glacier flow therefore have a significant, if not dominant impact on ice sheet mass balance. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Ice Sheet Ice Shelves West Antarctica Wilkes Land OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Antarctic East Antarctica West Antarctica Wilkes Land ENVELOPE(120.000,120.000,-69.000,-69.000) Nature Geoscience 1 2 106 110 |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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English |
description |
Large uncertainties remain in the current and future contribution to sea level rise from Antarctica. Climate warming may increase snowfall in the continent’s interior1,2,3, but enhance glacier discharge at the coast where warmer air and ocean temperatures erode the buttressing ice shelves4,5,6,7,8,9,10,11. Here, we use satellite interferometric synthetic-aperture radar observations from 1992 to 2006 covering 85% of Antarctica’s coastline to estimate the total mass flux into the ocean. We compare the mass fluxes from large drainage basin units with interior snow accumulation calculated from a regional atmospheric climate model for 1980 to 2004. In East Antarctica, small glacier losses in Wilkes Land and glacier gains at the mouths of the Filchner and Ross ice shelves combine to a near-zero loss of 4±61 Gt yr−1. In West Antarctica, widespread losses along the Bellingshausen and Amundsen seas increased the ice sheet loss by 59% in 10 years to reach 132±60 Gt yr−1 in 2006. In the Peninsula, losses increased by 140% to reach 60±46 Gt yr−1 in 2006. Losses are concentrated along narrow channels occupied by outlet glaciers and are caused by ongoing and past glacier acceleration. Changes in glacier flow therefore have a significant, if not dominant impact on ice sheet mass balance. |
format |
Article in Journal/Newspaper |
author |
Rignot, Eric Bamber, Jonathan L. van den Broeke, Michiel R. Davis, Curt Li, Yonghong van de Berg, Willem Jan van Meijgaard, Erik |
spellingShingle |
Rignot, Eric Bamber, Jonathan L. van den Broeke, Michiel R. Davis, Curt Li, Yonghong van de Berg, Willem Jan van Meijgaard, Erik Recent Antarctic ice mass loss from radar interferometry and regional climate modelling |
author_facet |
Rignot, Eric Bamber, Jonathan L. van den Broeke, Michiel R. Davis, Curt Li, Yonghong van de Berg, Willem Jan van Meijgaard, Erik |
author_sort |
Rignot, Eric |
title |
Recent Antarctic ice mass loss from radar interferometry and regional climate modelling |
title_short |
Recent Antarctic ice mass loss from radar interferometry and regional climate modelling |
title_full |
Recent Antarctic ice mass loss from radar interferometry and regional climate modelling |
title_fullStr |
Recent Antarctic ice mass loss from radar interferometry and regional climate modelling |
title_full_unstemmed |
Recent Antarctic ice mass loss from radar interferometry and regional climate modelling |
title_sort |
recent antarctic ice mass loss from radar interferometry and regional climate modelling |
publisher |
Nature Publishing Group |
publishDate |
2008 |
url |
https://oceanrep.geomar.de/id/eprint/48429/ https://oceanrep.geomar.de/id/eprint/48429/1/Rignot%20et%20al.pdf https://doi.org/10.1038/ngeo102 |
long_lat |
ENVELOPE(120.000,120.000,-69.000,-69.000) |
geographic |
Antarctic East Antarctica West Antarctica Wilkes Land |
geographic_facet |
Antarctic East Antarctica West Antarctica Wilkes Land |
genre |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet Ice Shelves West Antarctica Wilkes Land |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet Ice Shelves West Antarctica Wilkes Land |
op_relation |
https://oceanrep.geomar.de/id/eprint/48429/1/Rignot%20et%20al.pdf Rignot, E., Bamber, J. L., van den Broeke, M. R., Davis, C., Li, Y., van de Berg, W. J. and van Meijgaard, E. (2008) Recent Antarctic ice mass loss from radar interferometry and regional climate modelling. Nature Geoscience, 1 (2). pp. 106-110. DOI 10.1038/ngeo102 <https://doi.org/10.1038/ngeo102>. doi:10.1038/ngeo102 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1038/ngeo102 |
container_title |
Nature Geoscience |
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1 |
container_issue |
2 |
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106 |
op_container_end_page |
110 |
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1766270167811096576 |