Modelling the response of the Lambert Glacier–Amery Ice Shelf system, East Antarctica, to uncertain climate forcing over the 21st and 22nd centuries
The interaction between the climate system and the large polar ice sheet regions is a key process in global environmental change. We carried out dynamic ice simulations of one of the largest drainage systems in East Antarctica: the Lambert Glacier–Amery Ice Shelf system, with an adaptive mesh ice sh...
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fttriple:oai:gotriple.eu:oai:doaj.org/article:9469ef09435840498b4ab18aa05da85e 2023-05-15T13:22:02+02:00 Modelling the response of the Lambert Glacier–Amery Ice Shelf system, East Antarctica, to uncertain climate forcing over the 21st and 22nd centuries Y. Gong S. L. Cornford A. J. Payne 2014-06-01 https://doi.org/10.5194/tc-8-1057-2014 http://www.the-cryosphere.net/8/1057/2014/tc-8-1057-2014.pdf https://doaj.org/article/9469ef09435840498b4ab18aa05da85e en eng Copernicus Publications 1994-0416 1994-0424 doi:10.5194/tc-8-1057-2014 http://www.the-cryosphere.net/8/1057/2014/tc-8-1057-2014.pdf https://doaj.org/article/9469ef09435840498b4ab18aa05da85e undefined The Cryosphere, Vol 8, Iss 3, Pp 1057-1068 (2014) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2014 fttriple https://doi.org/10.5194/tc-8-1057-2014 2023-01-22T19:33:47Z The interaction between the climate system and the large polar ice sheet regions is a key process in global environmental change. We carried out dynamic ice simulations of one of the largest drainage systems in East Antarctica: the Lambert Glacier–Amery Ice Shelf system, with an adaptive mesh ice sheet model. The ice sheet model is driven by surface accumulation and basal melt rates computed by the FESOM (Finite-Element Sea-Ice Ocean Model) ocean model and the RACMO2 (Regional Atmospheric Climate Model) and LMDZ4 (Laboratoire de Météorologie Dynamique Zoom) atmosphere models. The change of ice thickness and velocity in the ice shelf is mainly influenced by the basal melt distribution, but, although the ice shelf thins in most of the simulations, there is little grounding line retreat. We find that the Lambert Glacier grounding line can retreat as much as 40 km if there is sufficient thinning of the ice shelf south of Clemence Massif, but the ocean model does not provide sufficiently high melt rates in that region. Overall, the increased accumulation computed by the atmosphere models outweighs ice stream acceleration so that the net contribution to sea level rise is negative. Article in Journal/Newspaper Amery Ice Shelf Antarc* Antarctica East Antarctica Ice Sheet Ice Shelf Lambert Glacier Sea ice The Cryosphere Unknown Amery ENVELOPE(-94.063,-94.063,56.565,56.565) Amery Ice Shelf ENVELOPE(71.000,71.000,-69.750,-69.750) Clemence Massif ENVELOPE(68.667,68.667,-72.200,-72.200) East Antarctica Lambert Glacier ENVELOPE(67.490,67.490,-73.065,-73.065) The Cryosphere 8 3 1057 1068 |
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Open Polar |
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fttriple |
language |
English |
topic |
geo envir |
spellingShingle |
geo envir Y. Gong S. L. Cornford A. J. Payne Modelling the response of the Lambert Glacier–Amery Ice Shelf system, East Antarctica, to uncertain climate forcing over the 21st and 22nd centuries |
topic_facet |
geo envir |
description |
The interaction between the climate system and the large polar ice sheet regions is a key process in global environmental change. We carried out dynamic ice simulations of one of the largest drainage systems in East Antarctica: the Lambert Glacier–Amery Ice Shelf system, with an adaptive mesh ice sheet model. The ice sheet model is driven by surface accumulation and basal melt rates computed by the FESOM (Finite-Element Sea-Ice Ocean Model) ocean model and the RACMO2 (Regional Atmospheric Climate Model) and LMDZ4 (Laboratoire de Météorologie Dynamique Zoom) atmosphere models. The change of ice thickness and velocity in the ice shelf is mainly influenced by the basal melt distribution, but, although the ice shelf thins in most of the simulations, there is little grounding line retreat. We find that the Lambert Glacier grounding line can retreat as much as 40 km if there is sufficient thinning of the ice shelf south of Clemence Massif, but the ocean model does not provide sufficiently high melt rates in that region. Overall, the increased accumulation computed by the atmosphere models outweighs ice stream acceleration so that the net contribution to sea level rise is negative. |
format |
Article in Journal/Newspaper |
author |
Y. Gong S. L. Cornford A. J. Payne |
author_facet |
Y. Gong S. L. Cornford A. J. Payne |
author_sort |
Y. Gong |
title |
Modelling the response of the Lambert Glacier–Amery Ice Shelf system, East Antarctica, to uncertain climate forcing over the 21st and 22nd centuries |
title_short |
Modelling the response of the Lambert Glacier–Amery Ice Shelf system, East Antarctica, to uncertain climate forcing over the 21st and 22nd centuries |
title_full |
Modelling the response of the Lambert Glacier–Amery Ice Shelf system, East Antarctica, to uncertain climate forcing over the 21st and 22nd centuries |
title_fullStr |
Modelling the response of the Lambert Glacier–Amery Ice Shelf system, East Antarctica, to uncertain climate forcing over the 21st and 22nd centuries |
title_full_unstemmed |
Modelling the response of the Lambert Glacier–Amery Ice Shelf system, East Antarctica, to uncertain climate forcing over the 21st and 22nd centuries |
title_sort |
modelling the response of the lambert glacier–amery ice shelf system, east antarctica, to uncertain climate forcing over the 21st and 22nd centuries |
publisher |
Copernicus Publications |
publishDate |
2014 |
url |
https://doi.org/10.5194/tc-8-1057-2014 http://www.the-cryosphere.net/8/1057/2014/tc-8-1057-2014.pdf https://doaj.org/article/9469ef09435840498b4ab18aa05da85e |
long_lat |
ENVELOPE(-94.063,-94.063,56.565,56.565) ENVELOPE(71.000,71.000,-69.750,-69.750) ENVELOPE(68.667,68.667,-72.200,-72.200) ENVELOPE(67.490,67.490,-73.065,-73.065) |
geographic |
Amery Amery Ice Shelf Clemence Massif East Antarctica Lambert Glacier |
geographic_facet |
Amery Amery Ice Shelf Clemence Massif East Antarctica Lambert Glacier |
genre |
Amery Ice Shelf Antarc* Antarctica East Antarctica Ice Sheet Ice Shelf Lambert Glacier Sea ice The Cryosphere |
genre_facet |
Amery Ice Shelf Antarc* Antarctica East Antarctica Ice Sheet Ice Shelf Lambert Glacier Sea ice The Cryosphere |
op_source |
The Cryosphere, Vol 8, Iss 3, Pp 1057-1068 (2014) |
op_relation |
1994-0416 1994-0424 doi:10.5194/tc-8-1057-2014 http://www.the-cryosphere.net/8/1057/2014/tc-8-1057-2014.pdf https://doaj.org/article/9469ef09435840498b4ab18aa05da85e |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/tc-8-1057-2014 |
container_title |
The Cryosphere |
container_volume |
8 |
container_issue |
3 |
container_start_page |
1057 |
op_container_end_page |
1068 |
_version_ |
1766362932490272768 |