Ice sheet mass loss caused by dust and black carbon accumulation
Albedo is the dominant factor governing surface melt variability in the ablation area of ice sheets and glaciers. Aerosols such as mineral dust and black carbon (soot) accumulate on the ice surface and cause a darker surface and therefore a lower albedo. The darkening effect on the ice surface is cu...
Published in: | The Cryosphere |
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Copernicus Publications
2015
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fttriple:oai:gotriple.eu:oai:doaj.org/article:f565727ed1a64f34b8530c1bc5164285 2023-05-15T16:29:19+02:00 Ice sheet mass loss caused by dust and black carbon accumulation T. Goelles C. E. Bøggild R. Greve 2015-09-01 https://doi.org/10.5194/tc-9-1845-2015 http://www.the-cryosphere.net/9/1845/2015/tc-9-1845-2015.pdf https://doaj.org/article/f565727ed1a64f34b8530c1bc5164285 en eng Copernicus Publications 1994-0416 1994-0424 doi:10.5194/tc-9-1845-2015 http://www.the-cryosphere.net/9/1845/2015/tc-9-1845-2015.pdf https://doaj.org/article/f565727ed1a64f34b8530c1bc5164285 undefined The Cryosphere, Vol 9, Iss 5, Pp 1845-1856 (2015) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2015 fttriple https://doi.org/10.5194/tc-9-1845-2015 2023-01-22T17:51:00Z Albedo is the dominant factor governing surface melt variability in the ablation area of ice sheets and glaciers. Aerosols such as mineral dust and black carbon (soot) accumulate on the ice surface and cause a darker surface and therefore a lower albedo. The darkening effect on the ice surface is currently not included in sea level projections, and the effect is unknown. We present a model framework which includes ice dynamics, aerosol transport, aerosol accumulation and the darkening effect on ice albedo and its consequences for surface melt. The model is applied to a simplified geometry resembling the conditions of the Greenland ice sheet, and it is forced by several temperature scenarios to quantify the darkening effect of aerosols on future mass loss. The effect of aerosols depends non-linearly on the temperature rise due to the feedback between aerosol accumulation and surface melt. According to our conceptual model, accounting for black carbon and dust in future projections of ice sheet changes until the year 3000 could induce an additional volume loss of 7 %. Since we have ignored some feedback processes, the impact might be even larger. Article in Journal/Newspaper Greenland Ice Sheet The Cryosphere Unknown Greenland The Cryosphere 9 5 1845 1856 |
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geo envir T. Goelles C. E. Bøggild R. Greve Ice sheet mass loss caused by dust and black carbon accumulation |
topic_facet |
geo envir |
description |
Albedo is the dominant factor governing surface melt variability in the ablation area of ice sheets and glaciers. Aerosols such as mineral dust and black carbon (soot) accumulate on the ice surface and cause a darker surface and therefore a lower albedo. The darkening effect on the ice surface is currently not included in sea level projections, and the effect is unknown. We present a model framework which includes ice dynamics, aerosol transport, aerosol accumulation and the darkening effect on ice albedo and its consequences for surface melt. The model is applied to a simplified geometry resembling the conditions of the Greenland ice sheet, and it is forced by several temperature scenarios to quantify the darkening effect of aerosols on future mass loss. The effect of aerosols depends non-linearly on the temperature rise due to the feedback between aerosol accumulation and surface melt. According to our conceptual model, accounting for black carbon and dust in future projections of ice sheet changes until the year 3000 could induce an additional volume loss of 7 %. Since we have ignored some feedback processes, the impact might be even larger. |
format |
Article in Journal/Newspaper |
author |
T. Goelles C. E. Bøggild R. Greve |
author_facet |
T. Goelles C. E. Bøggild R. Greve |
author_sort |
T. Goelles |
title |
Ice sheet mass loss caused by dust and black carbon accumulation |
title_short |
Ice sheet mass loss caused by dust and black carbon accumulation |
title_full |
Ice sheet mass loss caused by dust and black carbon accumulation |
title_fullStr |
Ice sheet mass loss caused by dust and black carbon accumulation |
title_full_unstemmed |
Ice sheet mass loss caused by dust and black carbon accumulation |
title_sort |
ice sheet mass loss caused by dust and black carbon accumulation |
publisher |
Copernicus Publications |
publishDate |
2015 |
url |
https://doi.org/10.5194/tc-9-1845-2015 http://www.the-cryosphere.net/9/1845/2015/tc-9-1845-2015.pdf https://doaj.org/article/f565727ed1a64f34b8530c1bc5164285 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet The Cryosphere |
genre_facet |
Greenland Ice Sheet The Cryosphere |
op_source |
The Cryosphere, Vol 9, Iss 5, Pp 1845-1856 (2015) |
op_relation |
1994-0416 1994-0424 doi:10.5194/tc-9-1845-2015 http://www.the-cryosphere.net/9/1845/2015/tc-9-1845-2015.pdf https://doaj.org/article/f565727ed1a64f34b8530c1bc5164285 |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/tc-9-1845-2015 |
container_title |
The Cryosphere |
container_volume |
9 |
container_issue |
5 |
container_start_page |
1845 |
op_container_end_page |
1856 |
_version_ |
1766019022341537792 |