Arctic climate response to forcing from light-absorbing particles in snow and sea ice in CESM
The presence of light-absorbing aerosol particles deposited on arctic snow and sea ice influences the surface albedo, causing greater shortwave absorption, warming, and loss of snow and sea ice, lowering the albedo further. The Community Earth System Model version 1 (CESM1) now includes the radiativ...
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ftdoajarticles:oai:doaj.org/article:039ef441c53a4dc09635b2abaff976d0 2023-05-15T13:10:59+02:00 Arctic climate response to forcing from light-absorbing particles in snow and sea ice in CESM N. Goldenson S. J. Doherty C. M. Bitz M. M. Holland B. Light A. J. Conley 2012-09-01T00:00:00Z https://doi.org/10.5194/acp-12-7903-2012 https://doaj.org/article/039ef441c53a4dc09635b2abaff976d0 EN eng Copernicus Publications http://www.atmos-chem-phys.net/12/7903/2012/acp-12-7903-2012.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-12-7903-2012 1680-7316 1680-7324 https://doaj.org/article/039ef441c53a4dc09635b2abaff976d0 Atmospheric Chemistry and Physics, Vol 12, Iss 17, Pp 7903-7920 (2012) Physics QC1-999 Chemistry QD1-999 article 2012 ftdoajarticles https://doi.org/10.5194/acp-12-7903-2012 2022-12-31T06:15:55Z The presence of light-absorbing aerosol particles deposited on arctic snow and sea ice influences the surface albedo, causing greater shortwave absorption, warming, and loss of snow and sea ice, lowering the albedo further. The Community Earth System Model version 1 (CESM1) now includes the radiative effects of light-absorbing particles in snow on land and sea ice and in sea ice itself. We investigate the model response to the deposition of black carbon and dust to both snow and sea ice. For these purposes we employ a slab ocean version of CESM1, using the Community Atmosphere Model version 4 (CAM4), run to equilibrium for year 2000 levels of CO 2 and fixed aerosol deposition. We construct experiments with and without aerosol deposition, with dust or black carbon deposition alone, and with varying quantities of black carbon and dust to approximate year 1850 and 2000 deposition fluxes. The year 2000 deposition fluxes of both dust and black carbon cause 1–2 °C of surface warming over large areas of the Arctic Ocean and sub-Arctic seas in autumn and winter and in patches of Northern land in every season. Atmospheric circulation changes are a key component of the surface-warming pattern. Arctic sea ice thins by on average about 30 cm. Simulations with year 1850 aerosol deposition are not substantially different from those with year 2000 deposition, given constant levels of CO 2 . The climatic impact of particulate impurities deposited over land exceeds that of particles deposited over sea ice. Even the surface warming over the sea ice and sea ice thinning depends more upon light-absorbing particles deposited over land. For CO 2 doubled relative to year 2000 levels, the climate impact of particulate impurities in snow and sea ice is substantially lower than for the year 2000 equilibrium simulation. Article in Journal/Newspaper albedo Arctic Arctic Ocean black carbon Sea ice Directory of Open Access Journals: DOAJ Articles Arctic Arctic Ocean Atmospheric Chemistry and Physics 12 17 7903 7920 |
institution |
Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
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language |
English |
topic |
Physics QC1-999 Chemistry QD1-999 |
spellingShingle |
Physics QC1-999 Chemistry QD1-999 N. Goldenson S. J. Doherty C. M. Bitz M. M. Holland B. Light A. J. Conley Arctic climate response to forcing from light-absorbing particles in snow and sea ice in CESM |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
The presence of light-absorbing aerosol particles deposited on arctic snow and sea ice influences the surface albedo, causing greater shortwave absorption, warming, and loss of snow and sea ice, lowering the albedo further. The Community Earth System Model version 1 (CESM1) now includes the radiative effects of light-absorbing particles in snow on land and sea ice and in sea ice itself. We investigate the model response to the deposition of black carbon and dust to both snow and sea ice. For these purposes we employ a slab ocean version of CESM1, using the Community Atmosphere Model version 4 (CAM4), run to equilibrium for year 2000 levels of CO 2 and fixed aerosol deposition. We construct experiments with and without aerosol deposition, with dust or black carbon deposition alone, and with varying quantities of black carbon and dust to approximate year 1850 and 2000 deposition fluxes. The year 2000 deposition fluxes of both dust and black carbon cause 1–2 °C of surface warming over large areas of the Arctic Ocean and sub-Arctic seas in autumn and winter and in patches of Northern land in every season. Atmospheric circulation changes are a key component of the surface-warming pattern. Arctic sea ice thins by on average about 30 cm. Simulations with year 1850 aerosol deposition are not substantially different from those with year 2000 deposition, given constant levels of CO 2 . The climatic impact of particulate impurities deposited over land exceeds that of particles deposited over sea ice. Even the surface warming over the sea ice and sea ice thinning depends more upon light-absorbing particles deposited over land. For CO 2 doubled relative to year 2000 levels, the climate impact of particulate impurities in snow and sea ice is substantially lower than for the year 2000 equilibrium simulation. |
format |
Article in Journal/Newspaper |
author |
N. Goldenson S. J. Doherty C. M. Bitz M. M. Holland B. Light A. J. Conley |
author_facet |
N. Goldenson S. J. Doherty C. M. Bitz M. M. Holland B. Light A. J. Conley |
author_sort |
N. Goldenson |
title |
Arctic climate response to forcing from light-absorbing particles in snow and sea ice in CESM |
title_short |
Arctic climate response to forcing from light-absorbing particles in snow and sea ice in CESM |
title_full |
Arctic climate response to forcing from light-absorbing particles in snow and sea ice in CESM |
title_fullStr |
Arctic climate response to forcing from light-absorbing particles in snow and sea ice in CESM |
title_full_unstemmed |
Arctic climate response to forcing from light-absorbing particles in snow and sea ice in CESM |
title_sort |
arctic climate response to forcing from light-absorbing particles in snow and sea ice in cesm |
publisher |
Copernicus Publications |
publishDate |
2012 |
url |
https://doi.org/10.5194/acp-12-7903-2012 https://doaj.org/article/039ef441c53a4dc09635b2abaff976d0 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
albedo Arctic Arctic Ocean black carbon Sea ice |
genre_facet |
albedo Arctic Arctic Ocean black carbon Sea ice |
op_source |
Atmospheric Chemistry and Physics, Vol 12, Iss 17, Pp 7903-7920 (2012) |
op_relation |
http://www.atmos-chem-phys.net/12/7903/2012/acp-12-7903-2012.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-12-7903-2012 1680-7316 1680-7324 https://doaj.org/article/039ef441c53a4dc09635b2abaff976d0 |
op_doi |
https://doi.org/10.5194/acp-12-7903-2012 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
12 |
container_issue |
17 |
container_start_page |
7903 |
op_container_end_page |
7920 |
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