Effect of retreating sea ice on Arctic cloud cover in simulated recent global warming
This study investigates the effect of sea ice reduction on Arctic cloud cover in historical simulations with the coupled atmosphere–ocean general circulation model MIROC5. Arctic sea ice has been substantially retreating since the 1980s, particularly in September, under simulated global warming cond...
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Online Access: | https://doi.org/10.5194/acp-16-14343-2016 https://doaj.org/article/8cf8f88c598c4757a59e6b1e34797c8a |
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ftdoajarticles:oai:doaj.org/article:8cf8f88c598c4757a59e6b1e34797c8a 2023-05-15T14:35:07+02:00 Effect of retreating sea ice on Arctic cloud cover in simulated recent global warming M. Abe T. Nozawa T. Ogura K. Takata 2016-11-01T00:00:00Z https://doi.org/10.5194/acp-16-14343-2016 https://doaj.org/article/8cf8f88c598c4757a59e6b1e34797c8a EN eng Copernicus Publications https://www.atmos-chem-phys.net/16/14343/2016/acp-16-14343-2016.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-16-14343-2016 1680-7316 1680-7324 https://doaj.org/article/8cf8f88c598c4757a59e6b1e34797c8a Atmospheric Chemistry and Physics, Vol 16, Pp 14343-14356 (2016) Physics QC1-999 Chemistry QD1-999 article 2016 ftdoajarticles https://doi.org/10.5194/acp-16-14343-2016 2022-12-31T15:02:49Z This study investigates the effect of sea ice reduction on Arctic cloud cover in historical simulations with the coupled atmosphere–ocean general circulation model MIROC5. Arctic sea ice has been substantially retreating since the 1980s, particularly in September, under simulated global warming conditions. The simulated sea ice reduction is consistent with satellite observations. On the other hand, Arctic cloud cover has been increasing in October, with about a 1-month lag behind the sea ice reduction. The delayed response leads to extensive sea ice reductions because the heat and moisture fluxes from the underlying open ocean into the atmosphere are enhanced. Sensitivity experiments with the atmospheric part of MIROC5 clearly show that sea ice reduction causes increases in cloud cover. Arctic cloud cover increases primarily in the lower troposphere, but it decreases in the near-surface layers just above the ocean; predominant temperature rises in these near-surface layers cause drying (i.e., decreases in relative humidity), despite increasing moisture flux. Cloud radiative forcing due to increases in cloud cover in autumn brings an increase in the surface downward longwave radiation (DLR) by approximately 40–60 % compared to changes in clear-sky surface DLR in fall. These results suggest that an increase in Arctic cloud cover as a result of reduced sea ice coverage may bring further sea ice retreat and enhance the feedback processes of Arctic warming. Article in Journal/Newspaper Arctic Global warming Sea ice Directory of Open Access Journals: DOAJ Articles Arctic Atmospheric Chemistry and Physics 16 22 14343 14356 |
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Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Physics QC1-999 Chemistry QD1-999 |
spellingShingle |
Physics QC1-999 Chemistry QD1-999 M. Abe T. Nozawa T. Ogura K. Takata Effect of retreating sea ice on Arctic cloud cover in simulated recent global warming |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
This study investigates the effect of sea ice reduction on Arctic cloud cover in historical simulations with the coupled atmosphere–ocean general circulation model MIROC5. Arctic sea ice has been substantially retreating since the 1980s, particularly in September, under simulated global warming conditions. The simulated sea ice reduction is consistent with satellite observations. On the other hand, Arctic cloud cover has been increasing in October, with about a 1-month lag behind the sea ice reduction. The delayed response leads to extensive sea ice reductions because the heat and moisture fluxes from the underlying open ocean into the atmosphere are enhanced. Sensitivity experiments with the atmospheric part of MIROC5 clearly show that sea ice reduction causes increases in cloud cover. Arctic cloud cover increases primarily in the lower troposphere, but it decreases in the near-surface layers just above the ocean; predominant temperature rises in these near-surface layers cause drying (i.e., decreases in relative humidity), despite increasing moisture flux. Cloud radiative forcing due to increases in cloud cover in autumn brings an increase in the surface downward longwave radiation (DLR) by approximately 40–60 % compared to changes in clear-sky surface DLR in fall. These results suggest that an increase in Arctic cloud cover as a result of reduced sea ice coverage may bring further sea ice retreat and enhance the feedback processes of Arctic warming. |
format |
Article in Journal/Newspaper |
author |
M. Abe T. Nozawa T. Ogura K. Takata |
author_facet |
M. Abe T. Nozawa T. Ogura K. Takata |
author_sort |
M. Abe |
title |
Effect of retreating sea ice on Arctic cloud cover in simulated recent global warming |
title_short |
Effect of retreating sea ice on Arctic cloud cover in simulated recent global warming |
title_full |
Effect of retreating sea ice on Arctic cloud cover in simulated recent global warming |
title_fullStr |
Effect of retreating sea ice on Arctic cloud cover in simulated recent global warming |
title_full_unstemmed |
Effect of retreating sea ice on Arctic cloud cover in simulated recent global warming |
title_sort |
effect of retreating sea ice on arctic cloud cover in simulated recent global warming |
publisher |
Copernicus Publications |
publishDate |
2016 |
url |
https://doi.org/10.5194/acp-16-14343-2016 https://doaj.org/article/8cf8f88c598c4757a59e6b1e34797c8a |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Global warming Sea ice |
genre_facet |
Arctic Global warming Sea ice |
op_source |
Atmospheric Chemistry and Physics, Vol 16, Pp 14343-14356 (2016) |
op_relation |
https://www.atmos-chem-phys.net/16/14343/2016/acp-16-14343-2016.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-16-14343-2016 1680-7316 1680-7324 https://doaj.org/article/8cf8f88c598c4757a59e6b1e34797c8a |
op_doi |
https://doi.org/10.5194/acp-16-14343-2016 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
16 |
container_issue |
22 |
container_start_page |
14343 |
op_container_end_page |
14356 |
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1766308005115068416 |