Contribution of sea ice albedo and insulation effects to Arctic amplification in the EC-Earth Pliocene simulation
In the present work, we simulate the Pliocene climate with the EC-Earth climate model as an equilibrium state for the current warming climate induced by rising CO2 in the atmosphere. The simulated Pliocene climate shows a strong Arctic amplification featuring pronounced warming sea surface temperatu...
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00003196 2023-05-15T13:11:01+02:00 Contribution of sea ice albedo and insulation effects to Arctic amplification in the EC-Earth Pliocene simulation Zheng, Jianqiu Zhang, Qiong Li, Qiang Zhang, Qiang Cai, Ming 2019-02 electronic https://doi.org/10.5194/cp-15-291-2019 https://noa.gwlb.de/receive/cop_mods_00003196 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00003154/cp-15-291-2019.pdf https://cp.copernicus.org/articles/15/291/2019/cp-15-291-2019.pdf eng eng Copernicus Publications Climate of the Past -- http://www.copernicus.org/EGU/cp/cp/published_papers.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2217985 -- 1814-9332 https://doi.org/10.5194/cp-15-291-2019 https://noa.gwlb.de/receive/cop_mods_00003196 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00003154/cp-15-291-2019.pdf https://cp.copernicus.org/articles/15/291/2019/cp-15-291-2019.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess CC-BY article Verlagsveröffentlichung article Text doc-type:article 2019 ftnonlinearchiv https://doi.org/10.5194/cp-15-291-2019 2022-02-08T23:00:42Z In the present work, we simulate the Pliocene climate with the EC-Earth climate model as an equilibrium state for the current warming climate induced by rising CO2 in the atmosphere. The simulated Pliocene climate shows a strong Arctic amplification featuring pronounced warming sea surface temperature (SST) over the North Atlantic, in particular over the Greenland Sea and Baffin Bay, which is comparable to geological SST reconstructions from the Pliocene Research, Interpretation and Synoptic Mapping group (PRISM; Dowsett et al., 2016). To understand the underlying physical processes, the air–sea heat flux variation in response to Arctic sea ice change is quantitatively assessed by a climate feedback and response analysis method (CFRAM) and an approach similar to equilibrium feedback assessment. Given the fact that the maximum SST warming occurs in summer while the maximum surface air temperature warming happens during winter, our analyses show that a dominant ice-albedo effect is the main reason for summer SST warming, and a 1 % loss in sea ice concentration could lead to an approximate 1.8 W m−2 increase in shortwave solar radiation into open sea surface. During the winter months, the insulation effect induces enhanced turbulent heat flux out of the sea surface due to sea ice melting in previous summer months. This leads to more heat released from the ocean to the atmosphere, thus explaining why surface air temperature warming amplification is stronger in winter than in summer. Article in Journal/Newspaper albedo Arctic Baffin Bay Baffin Bay Baffin Greenland Greenland Sea North Atlantic Sea ice Niedersächsisches Online-Archiv NOA Arctic Baffin Bay Greenland Climate of the Past 15 1 291 305 |
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Niedersächsisches Online-Archiv NOA |
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English |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Zheng, Jianqiu Zhang, Qiong Li, Qiang Zhang, Qiang Cai, Ming Contribution of sea ice albedo and insulation effects to Arctic amplification in the EC-Earth Pliocene simulation |
topic_facet |
article Verlagsveröffentlichung |
description |
In the present work, we simulate the Pliocene climate with the EC-Earth climate model as an equilibrium state for the current warming climate induced by rising CO2 in the atmosphere. The simulated Pliocene climate shows a strong Arctic amplification featuring pronounced warming sea surface temperature (SST) over the North Atlantic, in particular over the Greenland Sea and Baffin Bay, which is comparable to geological SST reconstructions from the Pliocene Research, Interpretation and Synoptic Mapping group (PRISM; Dowsett et al., 2016). To understand the underlying physical processes, the air–sea heat flux variation in response to Arctic sea ice change is quantitatively assessed by a climate feedback and response analysis method (CFRAM) and an approach similar to equilibrium feedback assessment. Given the fact that the maximum SST warming occurs in summer while the maximum surface air temperature warming happens during winter, our analyses show that a dominant ice-albedo effect is the main reason for summer SST warming, and a 1 % loss in sea ice concentration could lead to an approximate 1.8 W m−2 increase in shortwave solar radiation into open sea surface. During the winter months, the insulation effect induces enhanced turbulent heat flux out of the sea surface due to sea ice melting in previous summer months. This leads to more heat released from the ocean to the atmosphere, thus explaining why surface air temperature warming amplification is stronger in winter than in summer. |
format |
Article in Journal/Newspaper |
author |
Zheng, Jianqiu Zhang, Qiong Li, Qiang Zhang, Qiang Cai, Ming |
author_facet |
Zheng, Jianqiu Zhang, Qiong Li, Qiang Zhang, Qiang Cai, Ming |
author_sort |
Zheng, Jianqiu |
title |
Contribution of sea ice albedo and insulation effects to Arctic amplification in the EC-Earth Pliocene simulation |
title_short |
Contribution of sea ice albedo and insulation effects to Arctic amplification in the EC-Earth Pliocene simulation |
title_full |
Contribution of sea ice albedo and insulation effects to Arctic amplification in the EC-Earth Pliocene simulation |
title_fullStr |
Contribution of sea ice albedo and insulation effects to Arctic amplification in the EC-Earth Pliocene simulation |
title_full_unstemmed |
Contribution of sea ice albedo and insulation effects to Arctic amplification in the EC-Earth Pliocene simulation |
title_sort |
contribution of sea ice albedo and insulation effects to arctic amplification in the ec-earth pliocene simulation |
publisher |
Copernicus Publications |
publishDate |
2019 |
url |
https://doi.org/10.5194/cp-15-291-2019 https://noa.gwlb.de/receive/cop_mods_00003196 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00003154/cp-15-291-2019.pdf https://cp.copernicus.org/articles/15/291/2019/cp-15-291-2019.pdf |
geographic |
Arctic Baffin Bay Greenland |
geographic_facet |
Arctic Baffin Bay Greenland |
genre |
albedo Arctic Baffin Bay Baffin Bay Baffin Greenland Greenland Sea North Atlantic Sea ice |
genre_facet |
albedo Arctic Baffin Bay Baffin Bay Baffin Greenland Greenland Sea North Atlantic Sea ice |
op_relation |
Climate of the Past -- http://www.copernicus.org/EGU/cp/cp/published_papers.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2217985 -- 1814-9332 https://doi.org/10.5194/cp-15-291-2019 https://noa.gwlb.de/receive/cop_mods_00003196 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00003154/cp-15-291-2019.pdf https://cp.copernicus.org/articles/15/291/2019/cp-15-291-2019.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/cp-15-291-2019 |
container_title |
Climate of the Past |
container_volume |
15 |
container_issue |
1 |
container_start_page |
291 |
op_container_end_page |
305 |
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1766245599907151872 |