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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ftcdlib:oai:escholarship.org/ark:/13030/qt0h99p29h 2023-05-15T14:04:02+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 1699 - 1710 2014-09-17 application/pdf https://escholarship.org/uc/item/0h99p29h unknown eScholarship, University of California qt0h99p29h https://escholarship.org/uc/item/0h99p29h CC-BY CC-BY Cryosphere, vol 8, iss 5 Meteorology & Atmospheric Sciences Oceanography Physical Geography and Environmental Geoscience article 2014 ftcdlib 2021-04-16T07:10:50Z 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. Article in Journal/Newspaper Antarc* Antarctica Ice Shelf Pine Island Pine Island Glacier West Antarctica University of California: eScholarship Pine Island Glacier ENVELOPE(-101.000,-101.000,-75.000,-75.000) West Antarctica |
institution |
Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
unknown |
topic |
Meteorology & Atmospheric Sciences Oceanography Physical Geography and Environmental Geoscience |
spellingShingle |
Meteorology & Atmospheric Sciences Oceanography Physical Geography and Environmental Geoscience 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 |
topic_facet |
Meteorology & Atmospheric Sciences Oceanography Physical Geography and Environmental Geoscience |
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 |
Article in Journal/Newspaper |
author |
Seroussi, H Morlighem, M Rignot, E Mouginot, J Larour, E Schodlok, M Khazendar, A |
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 |
publisher |
eScholarship, University of California |
publishDate |
2014 |
url |
https://escholarship.org/uc/item/0h99p29h |
op_coverage |
1699 - 1710 |
long_lat |
ENVELOPE(-101.000,-101.000,-75.000,-75.000) |
geographic |
Pine Island Glacier West Antarctica |
geographic_facet |
Pine Island Glacier West Antarctica |
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 |
Cryosphere, vol 8, iss 5 |
op_relation |
qt0h99p29h https://escholarship.org/uc/item/0h99p29h |
op_rights |
CC-BY |
op_rightsnorm |
CC-BY |
_version_ |
1766274969263669248 |