气候变化领域集成服务门户(CCPortal): Impact of ocean heat transport on the Arctic sea-ice decline: a model study with EC-Earth3

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DOI	10.1007/s00382-020-05540-8
	Impact of ocean heat transport on the Arctic sea-ice decline: a model study with EC-Earth3
	Docquier D.; Koenigk T.; Fuentes-Franco R.; Karami M.P.; Ruprich-Robert Y.
发表日期	2021
ISSN	0930-7575
卷号	56 期号:2021-05-06
英文摘要	The recent increase in Atlantic and Pacific ocean heat transports has led to a decrease in Arctic sea-ice area and volume. As the respective contributions from both oceans in driving sea-ice loss is still uncertain, our study explores this. We use the EC-Earth3 coupled global climate model and perform different sensitivity experiments to gain insights into the relationships between ocean heat transport and Arctic sea ice. In these model experiments, the sea-surface temperature is artificially increased in different regions of the North Atlantic and North Pacific Oceans and with different levels of warming. All the experiments lead to enhanced ocean heat transport, and consequently to a decrease in Arctic sea-ice area and volume. We show that the wider the domain in which the sea-surface temperature is increased and the larger the level of warming, the larger the increase in ocean heat transport and the stronger the decrease in Arctic sea-ice area and volume. We also find that for a same amount of ocean heat transport increase, the reductions in Arctic sea-ice area and volume are stronger when the sea-surface temperature increase is imposed in the North Pacific, compared to the North Atlantic. This is explained by the lower-salinity water at the Bering Strait and atmospheric warming of the North Atlantic Ocean in the Pacific experiments. Finally, we find that the sea-ice loss is mainly driven by reduced basal growth along the sea-ice edge and enhanced basal melt in the Central Arctic. This confirms that the ocean heat transport is the primary driver of Arctic sea-ice loss in our experiments. © 2021, The Author(s).
英文关键词	EC-Earth; Modeling; Ocean heat transport; Sea ice
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/183356
作者单位	Swedish Meteorological and Hydrological Institute, Rossby Centre, Norrköping, Sweden; Barcelona Supercomputing Center, Barcelona, Spain
推荐引用方式 GB/T 7714	Docquier D.,Koenigk T.,Fuentes-Franco R.,et al. Impact of ocean heat transport on the Arctic sea-ice decline: a model study with EC-Earth3[J],2021,56(2021-05-06).
APA	Docquier D.,Koenigk T.,Fuentes-Franco R.,Karami M.P.,&Ruprich-Robert Y..(2021).Impact of ocean heat transport on the Arctic sea-ice decline: a model study with EC-Earth3.Climate Dynamics,56(2021-05-06).
MLA	Docquier D.,et al."Impact of ocean heat transport on the Arctic sea-ice decline: a model study with EC-Earth3".Climate Dynamics 56.2021-05-06(2021).