Spatial and temporal Antarctic Ice Sheet mass trends, glacio-isostatic adjustment, and surface processes from a joint inversion of satellite altimeter, gravity, and GPS data
We present spatiotemporal mass balance trends for the Antarctic Ice Sheet from a statistical inversion of satellite altimetry, gravimetry, and elastic-corrected GPS data for the period 2003–2013. Our method simultaneously determines annual trends in ice dynamics, surface mass balance anomalies, and...
Published in: | Journal of Geophysical Research: Earth Surface |
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ftawi:oai:epic.awi.de:41458 2023-05-15T13:24:05+02:00 Spatial and temporal Antarctic Ice Sheet mass trends, glacio-isostatic adjustment, and surface processes from a joint inversion of satellite altimeter, gravity, and GPS data Martín-Español, Alba Zammit-Mangion, Andrew Clarke, Peter J. Flament, Thomas Helm, Veit King, Matt A. Luthcke, Scott B. Petrie, Elizabeth Rémy, Frederique Schön, Nana Wouters, Bert Bamber, Jonathan L. 2016-02-03 application/pdf https://epic.awi.de/id/eprint/41458/ https://epic.awi.de/id/eprint/41458/1/martin-espanol2016jgr.pdf https://doi.org/10.1002/2015JF003550 https://hdl.handle.net/10013/epic.48375 https://hdl.handle.net/10013/epic.48375.d001 unknown Wiley https://epic.awi.de/id/eprint/41458/1/martin-espanol2016jgr.pdf https://hdl.handle.net/10013/epic.48375.d001 Martín-Español, A. , Zammit-Mangion, A. , Clarke, P. J. , Flament, T. , Helm, V. orcid:0000-0001-7788-9328 , King, M. A. , Luthcke, S. B. , Petrie, E. , Rémy, F. , Schön, N. , Wouters, B. and Bamber, J. L. (2016) Spatial and temporal Antarctic Ice Sheet mass trends, glacio-isostatic adjustment, and surface processes from a joint inversion of satellite altimeter, gravity, and GPS data , Journal of Geophysical Research: Earth Surface, 121 (2), pp. 182-200 . doi:10.1002/2015JF003550 <https://doi.org/10.1002/2015JF003550> , hdl:10013/epic.48375 EPIC3Journal of Geophysical Research: Earth Surface, Wiley, 121(2), pp. 182-200, ISSN: 2169-9011 Article isiRev 2016 ftawi https://doi.org/10.1002/2015JF003550 2021-12-24T15:41:48Z We present spatiotemporal mass balance trends for the Antarctic Ice Sheet from a statistical inversion of satellite altimetry, gravimetry, and elastic-corrected GPS data for the period 2003–2013. Our method simultaneously determines annual trends in ice dynamics, surface mass balance anomalies, and a time-invariant solution for glacio-isostatic adjustment while remaining largely independent of forward models. We establish that over the period 2003–2013, Antarctica has been losing mass at a rate of −84 ± 22 Gt yr−1, with a sustained negative mean trend of dynamic imbalance of −111 ± 13 Gt yr−1. West Antarctica is the largest contributor with −112 ± 10 Gt yr−1, mainly triggered by high thinning rates of glaciers draining into the Amundsen Sea Embayment. The Antarctic Peninsula has experienced a dramatic increase in mass loss in the last decade, with a mean rate of −28 ± 7 Gt yr−1 and significantly higher values for the most recent years following the destabilization of the Southern Antarctic Peninsula around 2010. The total mass loss is partly compensated by a significant mass gain of 56 ± 18 Gt yr−1 in East Antarctica due to a positive trend of surface mass balance anomalies. Article in Journal/Newspaper Amundsen Sea Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica Ice Sheet West Antarctica Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Antarctic The Antarctic Antarctic Peninsula East Antarctica West Antarctica Amundsen Sea Journal of Geophysical Research: Earth Surface 121 2 182 200 |
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Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
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description |
We present spatiotemporal mass balance trends for the Antarctic Ice Sheet from a statistical inversion of satellite altimetry, gravimetry, and elastic-corrected GPS data for the period 2003–2013. Our method simultaneously determines annual trends in ice dynamics, surface mass balance anomalies, and a time-invariant solution for glacio-isostatic adjustment while remaining largely independent of forward models. We establish that over the period 2003–2013, Antarctica has been losing mass at a rate of −84 ± 22 Gt yr−1, with a sustained negative mean trend of dynamic imbalance of −111 ± 13 Gt yr−1. West Antarctica is the largest contributor with −112 ± 10 Gt yr−1, mainly triggered by high thinning rates of glaciers draining into the Amundsen Sea Embayment. The Antarctic Peninsula has experienced a dramatic increase in mass loss in the last decade, with a mean rate of −28 ± 7 Gt yr−1 and significantly higher values for the most recent years following the destabilization of the Southern Antarctic Peninsula around 2010. The total mass loss is partly compensated by a significant mass gain of 56 ± 18 Gt yr−1 in East Antarctica due to a positive trend of surface mass balance anomalies. |
format |
Article in Journal/Newspaper |
author |
Martín-Español, Alba Zammit-Mangion, Andrew Clarke, Peter J. Flament, Thomas Helm, Veit King, Matt A. Luthcke, Scott B. Petrie, Elizabeth Rémy, Frederique Schön, Nana Wouters, Bert Bamber, Jonathan L. |
spellingShingle |
Martín-Español, Alba Zammit-Mangion, Andrew Clarke, Peter J. Flament, Thomas Helm, Veit King, Matt A. Luthcke, Scott B. Petrie, Elizabeth Rémy, Frederique Schön, Nana Wouters, Bert Bamber, Jonathan L. Spatial and temporal Antarctic Ice Sheet mass trends, glacio-isostatic adjustment, and surface processes from a joint inversion of satellite altimeter, gravity, and GPS data |
author_facet |
Martín-Español, Alba Zammit-Mangion, Andrew Clarke, Peter J. Flament, Thomas Helm, Veit King, Matt A. Luthcke, Scott B. Petrie, Elizabeth Rémy, Frederique Schön, Nana Wouters, Bert Bamber, Jonathan L. |
author_sort |
Martín-Español, Alba |
title |
Spatial and temporal Antarctic Ice Sheet mass trends, glacio-isostatic adjustment, and surface processes from a joint inversion of satellite altimeter, gravity, and GPS data |
title_short |
Spatial and temporal Antarctic Ice Sheet mass trends, glacio-isostatic adjustment, and surface processes from a joint inversion of satellite altimeter, gravity, and GPS data |
title_full |
Spatial and temporal Antarctic Ice Sheet mass trends, glacio-isostatic adjustment, and surface processes from a joint inversion of satellite altimeter, gravity, and GPS data |
title_fullStr |
Spatial and temporal Antarctic Ice Sheet mass trends, glacio-isostatic adjustment, and surface processes from a joint inversion of satellite altimeter, gravity, and GPS data |
title_full_unstemmed |
Spatial and temporal Antarctic Ice Sheet mass trends, glacio-isostatic adjustment, and surface processes from a joint inversion of satellite altimeter, gravity, and GPS data |
title_sort |
spatial and temporal antarctic ice sheet mass trends, glacio-isostatic adjustment, and surface processes from a joint inversion of satellite altimeter, gravity, and gps data |
publisher |
Wiley |
publishDate |
2016 |
url |
https://epic.awi.de/id/eprint/41458/ https://epic.awi.de/id/eprint/41458/1/martin-espanol2016jgr.pdf https://doi.org/10.1002/2015JF003550 https://hdl.handle.net/10013/epic.48375 https://hdl.handle.net/10013/epic.48375.d001 |
geographic |
Antarctic The Antarctic Antarctic Peninsula East Antarctica West Antarctica Amundsen Sea |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula East Antarctica West Antarctica Amundsen Sea |
genre |
Amundsen Sea Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica Ice Sheet West Antarctica |
genre_facet |
Amundsen Sea Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica Ice Sheet West Antarctica |
op_source |
EPIC3Journal of Geophysical Research: Earth Surface, Wiley, 121(2), pp. 182-200, ISSN: 2169-9011 |
op_relation |
https://epic.awi.de/id/eprint/41458/1/martin-espanol2016jgr.pdf https://hdl.handle.net/10013/epic.48375.d001 Martín-Español, A. , Zammit-Mangion, A. , Clarke, P. J. , Flament, T. , Helm, V. orcid:0000-0001-7788-9328 , King, M. A. , Luthcke, S. B. , Petrie, E. , Rémy, F. , Schön, N. , Wouters, B. and Bamber, J. L. (2016) Spatial and temporal Antarctic Ice Sheet mass trends, glacio-isostatic adjustment, and surface processes from a joint inversion of satellite altimeter, gravity, and GPS data , Journal of Geophysical Research: Earth Surface, 121 (2), pp. 182-200 . doi:10.1002/2015JF003550 <https://doi.org/10.1002/2015JF003550> , hdl:10013/epic.48375 |
op_doi |
https://doi.org/10.1002/2015JF003550 |
container_title |
Journal of Geophysical Research: Earth Surface |
container_volume |
121 |
container_issue |
2 |
container_start_page |
182 |
op_container_end_page |
200 |
_version_ |
1766377390240432128 |