Greenland ice sheet surface mass balance:Evaluating simulations and making projections with regional climate models
Four high-resolution regional climate models (RCMs) have been set up for the area of Greenland, with the aim of providing future projections of Greenland ice sheet surface mass balance (SMB), and its contribution to sea level rise, with greater accuracy than is possible from coarser-resolution gener...
Published in: | The Cryosphere |
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Main Authors: | , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2012
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Online Access: | https://kclpure.kcl.ac.uk/portal/en/publications/c88a8481-199f-42ee-aab8-9c11f36c8a22 https://doi.org/10.5194/tc-6-1275-2012 https://kclpure.kcl.ac.uk/ws/files/101638196/Greenland_ice_sheet_surface_RAE_Published1December2012_GOLD_VoR_C_BY_.pdf http://www.scopus.com/inward/record.url?scp=84873686536&partnerID=8YFLogxK |
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ftkingscollondon:oai:kclpure.kcl.ac.uk:publications/c88a8481-199f-42ee-aab8-9c11f36c8a22 2024-05-19T07:41:03+00:00 Greenland ice sheet surface mass balance:Evaluating simulations and making projections with regional climate models Rae, J. G.L. Aoalgeirsdóttir, G. Edwards, T. L. Fettweis, X. Gregory, J. M. Hewitt, H. T. Lowe, J. A. Lucas-Picher, P. Mottram, R. H. Payne, A. J. Ridley, J. K. Shannon, S. R. Van De Berg, W. J. Van De Wal, R. S.W. Van Den Broeke, M. R. 2012-12-01 application/pdf https://kclpure.kcl.ac.uk/portal/en/publications/c88a8481-199f-42ee-aab8-9c11f36c8a22 https://doi.org/10.5194/tc-6-1275-2012 https://kclpure.kcl.ac.uk/ws/files/101638196/Greenland_ice_sheet_surface_RAE_Published1December2012_GOLD_VoR_C_BY_.pdf http://www.scopus.com/inward/record.url?scp=84873686536&partnerID=8YFLogxK eng eng info:eu-repo/semantics/openAccess Rae , J G L , Aoalgeirsdóttir , G , Edwards , T L , Fettweis , X , Gregory , J M , Hewitt , H T , Lowe , J A , Lucas-Picher , P , Mottram , R H , Payne , A J , Ridley , J K , Shannon , S R , Van De Berg , W J , Van De Wal , R S W & Van Den Broeke , M R 2012 , ' Greenland ice sheet surface mass balance : Evaluating simulations and making projections with regional climate models ' , The Cryosphere , vol. 6 , no. 6 , pp. 1275-1294 . https://doi.org/10.5194/tc-6-1275-2012 article 2012 ftkingscollondon https://doi.org/10.5194/tc-6-1275-2012 2024-04-24T00:21:12Z Four high-resolution regional climate models (RCMs) have been set up for the area of Greenland, with the aim of providing future projections of Greenland ice sheet surface mass balance (SMB), and its contribution to sea level rise, with greater accuracy than is possible from coarser-resolution general circulation models (GCMs). This is the first time an intercomparison has been carried out of RCM results for Greenland climate and SMB. Output from RCM simulations for the recent past with the four RCMs is evaluated against available observations. The evaluation highlights the importance of using a detailed snow physics scheme, especially regarding the representations of albedo and meltwater refreezing. Simulations with three of the RCMs for the 21st century using SRES scenario A1B from two GCMs produce trends of between-5.5 and-1.1 Gt yr -2 in SMB (equivalent to +0.015 and +0.003 mm sea level equivalent yr -2 ), with trends of smaller magnitude for scenario E1, in which emissions are mitigated. Results from one of the RCMs whose present-day simulation is most realistic indicate that an annual mean near-surface air temperature increase over Greenland of ∼ 2° C would be required for the mass loss to increase such that it exceeds accumulation, thereby causing the SMB to become negative, which has been suggested as a threshold beyond which the ice sheet would eventually be eliminated. Article in Journal/Newspaper Greenland Ice Sheet The Cryosphere King's College, London: Research Portal The Cryosphere 6 6 1275 1294 |
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Open Polar |
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King's College, London: Research Portal |
op_collection_id |
ftkingscollondon |
language |
English |
description |
Four high-resolution regional climate models (RCMs) have been set up for the area of Greenland, with the aim of providing future projections of Greenland ice sheet surface mass balance (SMB), and its contribution to sea level rise, with greater accuracy than is possible from coarser-resolution general circulation models (GCMs). This is the first time an intercomparison has been carried out of RCM results for Greenland climate and SMB. Output from RCM simulations for the recent past with the four RCMs is evaluated against available observations. The evaluation highlights the importance of using a detailed snow physics scheme, especially regarding the representations of albedo and meltwater refreezing. Simulations with three of the RCMs for the 21st century using SRES scenario A1B from two GCMs produce trends of between-5.5 and-1.1 Gt yr -2 in SMB (equivalent to +0.015 and +0.003 mm sea level equivalent yr -2 ), with trends of smaller magnitude for scenario E1, in which emissions are mitigated. Results from one of the RCMs whose present-day simulation is most realistic indicate that an annual mean near-surface air temperature increase over Greenland of ∼ 2° C would be required for the mass loss to increase such that it exceeds accumulation, thereby causing the SMB to become negative, which has been suggested as a threshold beyond which the ice sheet would eventually be eliminated. |
format |
Article in Journal/Newspaper |
author |
Rae, J. G.L. Aoalgeirsdóttir, G. Edwards, T. L. Fettweis, X. Gregory, J. M. Hewitt, H. T. Lowe, J. A. Lucas-Picher, P. Mottram, R. H. Payne, A. J. Ridley, J. K. Shannon, S. R. Van De Berg, W. J. Van De Wal, R. S.W. Van Den Broeke, M. R. |
spellingShingle |
Rae, J. G.L. Aoalgeirsdóttir, G. Edwards, T. L. Fettweis, X. Gregory, J. M. Hewitt, H. T. Lowe, J. A. Lucas-Picher, P. Mottram, R. H. Payne, A. J. Ridley, J. K. Shannon, S. R. Van De Berg, W. J. Van De Wal, R. S.W. Van Den Broeke, M. R. Greenland ice sheet surface mass balance:Evaluating simulations and making projections with regional climate models |
author_facet |
Rae, J. G.L. Aoalgeirsdóttir, G. Edwards, T. L. Fettweis, X. Gregory, J. M. Hewitt, H. T. Lowe, J. A. Lucas-Picher, P. Mottram, R. H. Payne, A. J. Ridley, J. K. Shannon, S. R. Van De Berg, W. J. Van De Wal, R. S.W. Van Den Broeke, M. R. |
author_sort |
Rae, J. G.L. |
title |
Greenland ice sheet surface mass balance:Evaluating simulations and making projections with regional climate models |
title_short |
Greenland ice sheet surface mass balance:Evaluating simulations and making projections with regional climate models |
title_full |
Greenland ice sheet surface mass balance:Evaluating simulations and making projections with regional climate models |
title_fullStr |
Greenland ice sheet surface mass balance:Evaluating simulations and making projections with regional climate models |
title_full_unstemmed |
Greenland ice sheet surface mass balance:Evaluating simulations and making projections with regional climate models |
title_sort |
greenland ice sheet surface mass balance:evaluating simulations and making projections with regional climate models |
publishDate |
2012 |
url |
https://kclpure.kcl.ac.uk/portal/en/publications/c88a8481-199f-42ee-aab8-9c11f36c8a22 https://doi.org/10.5194/tc-6-1275-2012 https://kclpure.kcl.ac.uk/ws/files/101638196/Greenland_ice_sheet_surface_RAE_Published1December2012_GOLD_VoR_C_BY_.pdf http://www.scopus.com/inward/record.url?scp=84873686536&partnerID=8YFLogxK |
genre |
Greenland Ice Sheet The Cryosphere |
genre_facet |
Greenland Ice Sheet The Cryosphere |
op_source |
Rae , J G L , Aoalgeirsdóttir , G , Edwards , T L , Fettweis , X , Gregory , J M , Hewitt , H T , Lowe , J A , Lucas-Picher , P , Mottram , R H , Payne , A J , Ridley , J K , Shannon , S R , Van De Berg , W J , Van De Wal , R S W & Van Den Broeke , M R 2012 , ' Greenland ice sheet surface mass balance : Evaluating simulations and making projections with regional climate models ' , The Cryosphere , vol. 6 , no. 6 , pp. 1275-1294 . https://doi.org/10.5194/tc-6-1275-2012 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-6-1275-2012 |
container_title |
The Cryosphere |
container_volume |
6 |
container_issue |
6 |
container_start_page |
1275 |
op_container_end_page |
1294 |
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1799480636689350656 |