An efficient regional energy-moisture balance model for simulation of the Greenland Ice Sheet response to climate change
In order to explore the response of the Greenland ice sheet (GIS) to climate change on long (centennial to multi-millennial) time scales, a regional energy-moisture balance model has been developed. This model simulates seasonal variations of temperature and precipitation over Greenland and explicit...
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ftleibnizopen:oai:oai.leibnizopen.de:0W76PYkBdbrxVwz6U4Qj 2023-07-30T04:03:46+02:00 An efficient regional energy-moisture balance model for simulation of the Greenland Ice Sheet response to climate change Robinson, A. Calov, R. Ganopolski, A. 2010 application/pdf https://doi.org/10.34657/779 https://oa.tib.eu/renate/handle/123456789/659 eng eng München : European Geopyhsical Union CC BY 3.0 Unported https://creativecommons.org/licenses/by/3.0/ The Cryosphere, Volume 4, Issue 2, Page 129-144 550 article Text 2010 ftleibnizopen https://doi.org/10.34657/779 2023-07-10T12:48:26Z In order to explore the response of the Greenland ice sheet (GIS) to climate change on long (centennial to multi-millennial) time scales, a regional energy-moisture balance model has been developed. This model simulates seasonal variations of temperature and precipitation over Greenland and explicitly accounts for elevation and albedo feedbacks. From these fields, the annual mean surface temperature and surface mass balance can be determined and used to force an ice sheet model. The melt component of the surface mass balance is computed here using both a positive degree day approach and a more physically-based alternative that includes insolation and albedo explicitly. As a validation of the climate model, we first simulated temperature and precipitation over Greenland for the prescribed, present-day topography. Our simulated climatology compares well to observations and does not differ significantly from that of a simple parameterization used in many previous simulations. Furthermore, the calculated surface mass balance using both melt schemes falls within the range of recent regional climate model results. For a prescribed, ice-free state, the differences in simulated climatology between the regional energy-moisture balance model and the simple parameterization become significant, with our model showing much stronger summer warming. When coupled to a three-dimensional ice sheet model and initialized with present-day conditions, the two melt schemes both allow realistic simulations of the present-day GIS. publishedVersion Article in Journal/Newspaper Greenland Ice Sheet The Cryosphere LeibnizOpen (The Leibniz Association) Greenland |
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LeibnizOpen (The Leibniz Association) |
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English |
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550 Robinson, A. Calov, R. Ganopolski, A. An efficient regional energy-moisture balance model for simulation of the Greenland Ice Sheet response to climate change |
topic_facet |
550 |
description |
In order to explore the response of the Greenland ice sheet (GIS) to climate change on long (centennial to multi-millennial) time scales, a regional energy-moisture balance model has been developed. This model simulates seasonal variations of temperature and precipitation over Greenland and explicitly accounts for elevation and albedo feedbacks. From these fields, the annual mean surface temperature and surface mass balance can be determined and used to force an ice sheet model. The melt component of the surface mass balance is computed here using both a positive degree day approach and a more physically-based alternative that includes insolation and albedo explicitly. As a validation of the climate model, we first simulated temperature and precipitation over Greenland for the prescribed, present-day topography. Our simulated climatology compares well to observations and does not differ significantly from that of a simple parameterization used in many previous simulations. Furthermore, the calculated surface mass balance using both melt schemes falls within the range of recent regional climate model results. For a prescribed, ice-free state, the differences in simulated climatology between the regional energy-moisture balance model and the simple parameterization become significant, with our model showing much stronger summer warming. When coupled to a three-dimensional ice sheet model and initialized with present-day conditions, the two melt schemes both allow realistic simulations of the present-day GIS. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Robinson, A. Calov, R. Ganopolski, A. |
author_facet |
Robinson, A. Calov, R. Ganopolski, A. |
author_sort |
Robinson, A. |
title |
An efficient regional energy-moisture balance model for simulation of the Greenland Ice Sheet response to climate change |
title_short |
An efficient regional energy-moisture balance model for simulation of the Greenland Ice Sheet response to climate change |
title_full |
An efficient regional energy-moisture balance model for simulation of the Greenland Ice Sheet response to climate change |
title_fullStr |
An efficient regional energy-moisture balance model for simulation of the Greenland Ice Sheet response to climate change |
title_full_unstemmed |
An efficient regional energy-moisture balance model for simulation of the Greenland Ice Sheet response to climate change |
title_sort |
efficient regional energy-moisture balance model for simulation of the greenland ice sheet response to climate change |
publisher |
München : European Geopyhsical Union |
publishDate |
2010 |
url |
https://doi.org/10.34657/779 https://oa.tib.eu/renate/handle/123456789/659 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet The Cryosphere |
genre_facet |
Greenland Ice Sheet The Cryosphere |
op_source |
The Cryosphere, Volume 4, Issue 2, Page 129-144 |
op_rights |
CC BY 3.0 Unported https://creativecommons.org/licenses/by/3.0/ |
op_doi |
https://doi.org/10.34657/779 |
_version_ |
1772814863604645888 |