Self-inhibiting growth of the Greenland Ice Sheet
The build-up of the Greenland Ice Sheet (GrIS) from ice-free conditions is studied in an ice sheet model (ISM) driven by fields from an atmospheric general circulation model (GCM) to demonstrate the importance of coupling between the two components. Experiments where the two are coupled off-line are...
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2012
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ftcopenhagenunip:oai:pure.atira.dk:publications/ce4a2896-6d6b-4544-ac3d-1a6025636045 2023-12-17T10:30:49+01:00 Self-inhibiting growth of the Greenland Ice Sheet Langen, Peter Lang Solgaard, Anne Munck Hvidberg, Christine Schøtt 2012 https://curis.ku.dk/portal/da/publications/selfinhibiting-growth-of-the-greenland-ice-sheet(ce4a2896-6d6b-4544-ac3d-1a6025636045).html https://doi.org/10.1029/2012GL051810 eng eng info:eu-repo/semantics/restrictedAccess Langen , P L , Solgaard , A M & Hvidberg , C S 2012 , ' Self-inhibiting growth of the Greenland Ice Sheet ' , Geophysical Research Letters , vol. 39 , L12502 , pp. 1-5 . https://doi.org/10.1029/2012GL051810 article 2012 ftcopenhagenunip https://doi.org/10.1029/2012GL051810 2023-11-22T23:59:13Z The build-up of the Greenland Ice Sheet (GrIS) from ice-free conditions is studied in an ice sheet model (ISM) driven by fields from an atmospheric general circulation model (GCM) to demonstrate the importance of coupling between the two components. Experiments where the two are coupled off-line are augmented by one where an intermediate ice sheet configuration is coupled back to the GCM. Forcing the ISM with GCM fields corresponding to the ice-free state leads to extensive regrowth which, however, is halted when the intermediate recoupling step is included. This inhibition of further growth is due to a Föhn effect of moist air parcels being lifted over the intermediate ice sheet and arriving in the low-lying Greenland interior with high temperatures. This demonstrates that two-way coupling between the atmosphere and the ice sheet is essential for understanding the dynamics and that large scale conditions cooler than those of today may be necessary for the GrIS to regrow to the present volume Article in Journal/Newspaper Greenland Ice Sheet University of Copenhagen: Research Greenland Geophysical Research Letters 39 12 n/a n/a |
institution |
Open Polar |
collection |
University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
description |
The build-up of the Greenland Ice Sheet (GrIS) from ice-free conditions is studied in an ice sheet model (ISM) driven by fields from an atmospheric general circulation model (GCM) to demonstrate the importance of coupling between the two components. Experiments where the two are coupled off-line are augmented by one where an intermediate ice sheet configuration is coupled back to the GCM. Forcing the ISM with GCM fields corresponding to the ice-free state leads to extensive regrowth which, however, is halted when the intermediate recoupling step is included. This inhibition of further growth is due to a Föhn effect of moist air parcels being lifted over the intermediate ice sheet and arriving in the low-lying Greenland interior with high temperatures. This demonstrates that two-way coupling between the atmosphere and the ice sheet is essential for understanding the dynamics and that large scale conditions cooler than those of today may be necessary for the GrIS to regrow to the present volume |
format |
Article in Journal/Newspaper |
author |
Langen, Peter Lang Solgaard, Anne Munck Hvidberg, Christine Schøtt |
spellingShingle |
Langen, Peter Lang Solgaard, Anne Munck Hvidberg, Christine Schøtt Self-inhibiting growth of the Greenland Ice Sheet |
author_facet |
Langen, Peter Lang Solgaard, Anne Munck Hvidberg, Christine Schøtt |
author_sort |
Langen, Peter Lang |
title |
Self-inhibiting growth of the Greenland Ice Sheet |
title_short |
Self-inhibiting growth of the Greenland Ice Sheet |
title_full |
Self-inhibiting growth of the Greenland Ice Sheet |
title_fullStr |
Self-inhibiting growth of the Greenland Ice Sheet |
title_full_unstemmed |
Self-inhibiting growth of the Greenland Ice Sheet |
title_sort |
self-inhibiting growth of the greenland ice sheet |
publishDate |
2012 |
url |
https://curis.ku.dk/portal/da/publications/selfinhibiting-growth-of-the-greenland-ice-sheet(ce4a2896-6d6b-4544-ac3d-1a6025636045).html https://doi.org/10.1029/2012GL051810 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_source |
Langen , P L , Solgaard , A M & Hvidberg , C S 2012 , ' Self-inhibiting growth of the Greenland Ice Sheet ' , Geophysical Research Letters , vol. 39 , L12502 , pp. 1-5 . https://doi.org/10.1029/2012GL051810 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1029/2012GL051810 |
container_title |
Geophysical Research Letters |
container_volume |
39 |
container_issue |
12 |
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n/a |
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1785583896434311168 |