Sensitivity of the dynamics of Pine Island Glacier, West Antarctica, to climate forcing for the next 50 years
Pine Island Glacier, a major contributor to sea level rise in West Antarctica, has been undergoing significant changes over the last few decades. Here, we employ a three-dimensional, higher-order model to simulate its evolution over the next 50 yr in response to changes in its surface mass balance,...
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ftcopernicus:oai:publications.copernicus.org:tc24655 2023-05-15T13:54:27+02:00 Sensitivity of the dynamics of Pine Island Glacier, West Antarctica, to climate forcing for the next 50 years Seroussi, H. Morlighem, M. Rignot, E. Mouginot, J. Larour, E. Schodlok, M. Khazendar, A. 2018-09-27 application/pdf https://doi.org/10.5194/tc-8-1699-2014 https://tc.copernicus.org/articles/8/1699/2014/ eng eng doi:10.5194/tc-8-1699-2014 https://tc.copernicus.org/articles/8/1699/2014/ eISSN: 1994-0424 Text 2018 ftcopernicus https://doi.org/10.5194/tc-8-1699-2014 2020-07-20T16:24:55Z Pine Island Glacier, a major contributor to sea level rise in West Antarctica, has been undergoing significant changes over the last few decades. Here, we employ a three-dimensional, higher-order model to simulate its evolution over the next 50 yr in response to changes in its surface mass balance, the position of its calving front and ocean-induced ice shelf melting. Simulations show that the largest climatic impact on ice dynamics is the rate of ice shelf melting, which rapidly affects the glacier speed over several hundreds of kilometers upstream of the grounding line. Our simulations show that the speedup observed in the 1990s and 2000s is consistent with an increase in sub-ice-shelf melting. According to our modeling results, even if the grounding line stabilizes for a few decades, we find that the glacier reaction can continue for several decades longer. Furthermore, Pine Island Glacier will continue to change rapidly over the coming decades and remain a major contributor to sea level rise, even if ocean-induced melting is reduced. Text Antarc* Antarctica Ice Shelf Pine Island Pine Island Glacier West Antarctica Copernicus Publications: E-Journals West Antarctica Pine Island Glacier ENVELOPE(-101.000,-101.000,-75.000,-75.000) The Cryosphere 8 5 1699 1710 |
institution |
Open Polar |
collection |
Copernicus Publications: E-Journals |
op_collection_id |
ftcopernicus |
language |
English |
description |
Pine Island Glacier, a major contributor to sea level rise in West Antarctica, has been undergoing significant changes over the last few decades. Here, we employ a three-dimensional, higher-order model to simulate its evolution over the next 50 yr in response to changes in its surface mass balance, the position of its calving front and ocean-induced ice shelf melting. Simulations show that the largest climatic impact on ice dynamics is the rate of ice shelf melting, which rapidly affects the glacier speed over several hundreds of kilometers upstream of the grounding line. Our simulations show that the speedup observed in the 1990s and 2000s is consistent with an increase in sub-ice-shelf melting. According to our modeling results, even if the grounding line stabilizes for a few decades, we find that the glacier reaction can continue for several decades longer. Furthermore, Pine Island Glacier will continue to change rapidly over the coming decades and remain a major contributor to sea level rise, even if ocean-induced melting is reduced. |
format |
Text |
author |
Seroussi, H. Morlighem, M. Rignot, E. Mouginot, J. Larour, E. Schodlok, M. Khazendar, A. |
spellingShingle |
Seroussi, H. Morlighem, M. Rignot, E. Mouginot, J. Larour, E. Schodlok, M. Khazendar, A. Sensitivity of the dynamics of Pine Island Glacier, West Antarctica, to climate forcing for the next 50 years |
author_facet |
Seroussi, H. Morlighem, M. Rignot, E. Mouginot, J. Larour, E. Schodlok, M. Khazendar, A. |
author_sort |
Seroussi, H. |
title |
Sensitivity of the dynamics of Pine Island Glacier, West Antarctica, to climate forcing for the next 50 years |
title_short |
Sensitivity of the dynamics of Pine Island Glacier, West Antarctica, to climate forcing for the next 50 years |
title_full |
Sensitivity of the dynamics of Pine Island Glacier, West Antarctica, to climate forcing for the next 50 years |
title_fullStr |
Sensitivity of the dynamics of Pine Island Glacier, West Antarctica, to climate forcing for the next 50 years |
title_full_unstemmed |
Sensitivity of the dynamics of Pine Island Glacier, West Antarctica, to climate forcing for the next 50 years |
title_sort |
sensitivity of the dynamics of pine island glacier, west antarctica, to climate forcing for the next 50 years |
publishDate |
2018 |
url |
https://doi.org/10.5194/tc-8-1699-2014 https://tc.copernicus.org/articles/8/1699/2014/ |
long_lat |
ENVELOPE(-101.000,-101.000,-75.000,-75.000) |
geographic |
West Antarctica Pine Island Glacier |
geographic_facet |
West Antarctica Pine Island Glacier |
genre |
Antarc* Antarctica Ice Shelf Pine Island Pine Island Glacier West Antarctica |
genre_facet |
Antarc* Antarctica Ice Shelf Pine Island Pine Island Glacier West Antarctica |
op_source |
eISSN: 1994-0424 |
op_relation |
doi:10.5194/tc-8-1699-2014 https://tc.copernicus.org/articles/8/1699/2014/ |
op_doi |
https://doi.org/10.5194/tc-8-1699-2014 |
container_title |
The Cryosphere |
container_volume |
8 |
container_issue |
5 |
container_start_page |
1699 |
op_container_end_page |
1710 |
_version_ |
1766260360670609408 |