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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ftdoajarticles:oai:doaj.org/article:30bd4fecdbd4472faabec2236c586aca 2023-05-15T16:26:38+02:00 An efficient regional energy-moisture balance model for simulation of the Greenland Ice Sheet response to climate change A. Robinson R. Calov A. Ganopolski 2010-04-01T00:00:00Z https://doi.org/10.5194/tc-4-129-2010 https://doaj.org/article/30bd4fecdbd4472faabec2236c586aca EN eng Copernicus Publications http://www.the-cryosphere.net/4/129/2010/tc-4-129-2010.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-4-129-2010 1994-0416 1994-0424 https://doaj.org/article/30bd4fecdbd4472faabec2236c586aca The Cryosphere, Vol 4, Iss 2, Pp 129-144 (2010) Environmental sciences GE1-350 Geology QE1-996.5 article 2010 ftdoajarticles https://doi.org/10.5194/tc-4-129-2010 2023-01-08T01:35:49Z 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. Article in Journal/Newspaper Greenland Ice Sheet The Cryosphere Directory of Open Access Journals: DOAJ Articles Greenland The Cryosphere 4 2 129 144 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental sciences GE1-350 Geology QE1-996.5 |
spellingShingle |
Environmental sciences GE1-350 Geology QE1-996.5 A. Robinson R. Calov A. Ganopolski An efficient regional energy-moisture balance model for simulation of the Greenland Ice Sheet response to climate change |
topic_facet |
Environmental sciences GE1-350 Geology QE1-996.5 |
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. |
format |
Article in Journal/Newspaper |
author |
A. Robinson R. Calov A. Ganopolski |
author_facet |
A. Robinson R. Calov A. Ganopolski |
author_sort |
A. Robinson |
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 |
Copernicus Publications |
publishDate |
2010 |
url |
https://doi.org/10.5194/tc-4-129-2010 https://doaj.org/article/30bd4fecdbd4472faabec2236c586aca |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet The Cryosphere |
genre_facet |
Greenland Ice Sheet The Cryosphere |
op_source |
The Cryosphere, Vol 4, Iss 2, Pp 129-144 (2010) |
op_relation |
http://www.the-cryosphere.net/4/129/2010/tc-4-129-2010.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-4-129-2010 1994-0416 1994-0424 https://doaj.org/article/30bd4fecdbd4472faabec2236c586aca |
op_doi |
https://doi.org/10.5194/tc-4-129-2010 |
container_title |
The Cryosphere |
container_volume |
4 |
container_issue |
2 |
container_start_page |
129 |
op_container_end_page |
144 |
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1766015577935052800 |