SEMIC: an efficient surface energy and mass balance model applied to the Greenland ice sheet
We present SEMIC, a Surface Energy and Mass balance model of Intermediate Complexity for snow- and ice-covered surfaces such as the Greenland ice sheet. SEMIC is fast enough for glacial cycle applications, making it a suitable replacement for simpler methods such as the positive degree day (PDD) met...
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Copernicus Publications
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Online Access: | https://doi.org/10.5194/tc-11-1519-2017 https://www.the-cryosphere.net/11/1519/2017/tc-11-1519-2017.pdf https://doaj.org/article/f23a99190c3a4c47aed048258daec0fb |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:f23a99190c3a4c47aed048258daec0fb 2023-05-15T16:28:15+02:00 SEMIC: an efficient surface energy and mass balance model applied to the Greenland ice sheet M. Krapp A. Robinson A. Ganopolski 2017-07-01 https://doi.org/10.5194/tc-11-1519-2017 https://www.the-cryosphere.net/11/1519/2017/tc-11-1519-2017.pdf https://doaj.org/article/f23a99190c3a4c47aed048258daec0fb en eng Copernicus Publications doi:10.5194/tc-11-1519-2017 1994-0416 1994-0424 https://www.the-cryosphere.net/11/1519/2017/tc-11-1519-2017.pdf https://doaj.org/article/f23a99190c3a4c47aed048258daec0fb undefined The Cryosphere, Vol 11, Pp 1519-1535 (2017) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2017 fttriple https://doi.org/10.5194/tc-11-1519-2017 2023-01-22T19:12:44Z We present SEMIC, a Surface Energy and Mass balance model of Intermediate Complexity for snow- and ice-covered surfaces such as the Greenland ice sheet. SEMIC is fast enough for glacial cycle applications, making it a suitable replacement for simpler methods such as the positive degree day (PDD) method often used in ice sheet modelling. Our model explicitly calculates the main processes involved in the surface energy and mass balance, while maintaining a simple interface and requiring minimal data input to drive it. In this novel approach, we parameterise diurnal temperature variations in order to more realistically capture the daily thaw–freeze cycles that characterise the ice sheet mass balance. We show how to derive optimal model parameters for SEMIC specifically to reproduce surface characteristics and day-to-day variations similar to the regional climate model MAR (Modèle Atmosphérique Régional, version 2) and its incorporated multilayer snowpack model SISVAT (Soil Ice Snow Vegetation Atmosphere Transfer). A validation test shows that SEMIC simulates future changes in surface temperature and surface mass balance in good agreement with the more sophisticated multilayer snowpack model SISVAT included in MAR. With this paper, we present a physically based surface model to the ice sheet modelling community that is general enough to be used with in situ observations, climate model, or reanalysis data, and that is at the same time computationally fast enough for long-term integrations, such as glacial cycles or future climate change scenarios. Article in Journal/Newspaper Greenland Ice Sheet The Cryosphere Unknown Greenland The Cryosphere 11 4 1519 1535 |
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English |
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geo envir M. Krapp A. Robinson A. Ganopolski SEMIC: an efficient surface energy and mass balance model applied to the Greenland ice sheet |
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geo envir |
description |
We present SEMIC, a Surface Energy and Mass balance model of Intermediate Complexity for snow- and ice-covered surfaces such as the Greenland ice sheet. SEMIC is fast enough for glacial cycle applications, making it a suitable replacement for simpler methods such as the positive degree day (PDD) method often used in ice sheet modelling. Our model explicitly calculates the main processes involved in the surface energy and mass balance, while maintaining a simple interface and requiring minimal data input to drive it. In this novel approach, we parameterise diurnal temperature variations in order to more realistically capture the daily thaw–freeze cycles that characterise the ice sheet mass balance. We show how to derive optimal model parameters for SEMIC specifically to reproduce surface characteristics and day-to-day variations similar to the regional climate model MAR (Modèle Atmosphérique Régional, version 2) and its incorporated multilayer snowpack model SISVAT (Soil Ice Snow Vegetation Atmosphere Transfer). A validation test shows that SEMIC simulates future changes in surface temperature and surface mass balance in good agreement with the more sophisticated multilayer snowpack model SISVAT included in MAR. With this paper, we present a physically based surface model to the ice sheet modelling community that is general enough to be used with in situ observations, climate model, or reanalysis data, and that is at the same time computationally fast enough for long-term integrations, such as glacial cycles or future climate change scenarios. |
format |
Article in Journal/Newspaper |
author |
M. Krapp A. Robinson A. Ganopolski |
author_facet |
M. Krapp A. Robinson A. Ganopolski |
author_sort |
M. Krapp |
title |
SEMIC: an efficient surface energy and mass balance model applied to the Greenland ice sheet |
title_short |
SEMIC: an efficient surface energy and mass balance model applied to the Greenland ice sheet |
title_full |
SEMIC: an efficient surface energy and mass balance model applied to the Greenland ice sheet |
title_fullStr |
SEMIC: an efficient surface energy and mass balance model applied to the Greenland ice sheet |
title_full_unstemmed |
SEMIC: an efficient surface energy and mass balance model applied to the Greenland ice sheet |
title_sort |
semic: an efficient surface energy and mass balance model applied to the greenland ice sheet |
publisher |
Copernicus Publications |
publishDate |
2017 |
url |
https://doi.org/10.5194/tc-11-1519-2017 https://www.the-cryosphere.net/11/1519/2017/tc-11-1519-2017.pdf https://doaj.org/article/f23a99190c3a4c47aed048258daec0fb |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet The Cryosphere |
genre_facet |
Greenland Ice Sheet The Cryosphere |
op_source |
The Cryosphere, Vol 11, Pp 1519-1535 (2017) |
op_relation |
doi:10.5194/tc-11-1519-2017 1994-0416 1994-0424 https://www.the-cryosphere.net/11/1519/2017/tc-11-1519-2017.pdf https://doaj.org/article/f23a99190c3a4c47aed048258daec0fb |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/tc-11-1519-2017 |
container_title |
The Cryosphere |
container_volume |
11 |
container_issue |
4 |
container_start_page |
1519 |
op_container_end_page |
1535 |
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1766017891250995200 |