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DOI	10.1007/s00382-019-04870-6
	Assessment of the Atlantic water layer in the Arctic Ocean in CMIP5 climate models
	Shu Q.; Wang Q.; Su J.; Li X.; Qiao F.
发表日期	2019
ISSN	0930-7575
起始页码	5279
结束页码	5291
卷号	53 期号:2020-09-10
英文摘要	Atlantic water (AW) plays an important role in the thermal balance of the Arctic Ocean, but thus far there has been no comprehensive assessment of the AW layer in the Arctic Ocean simulated by coupled climate models in the framework of Coupled Model Intercomparison Project (CMIP). In this study we assessed the climatology and the trend of the Arctic AW layer in the historical simulations of 41 CMIP5 climate models. The results show that the CMIP5 intermodel spread is large in terms of simulated hydrography, AW core temperature (AWCT) and AW core depth (AWCD) in the Arctic Ocean. The CMIP5 multimodel means are found to be able to reproduce the main climatological spatial patterns of both the AWCT, which is warm near the Fram Strait and decreases along the AW pathways, and the AWCD, which deepens along the AW pathways. However, similar to standalone ocean-ice models, the CMIP5 climate models also face the common problems of too deep and too thick AW layer. AWCT bias in the Arctic Ocean is related to simulated water properties near the Fram Strait and in the Kara and Barents seas. Models with large AWCT biases are those with large biases in AW temperature in the Fram Strait. The biases of AWCT are also significantly correlated with the ocean temperature in the Kara Sea, which is modulated by winter cooling, hence the mixed layer depth and sea ice cover in the Barents Sea. The CMIP5 models largely underestimate the interannual variability of the AWCT, and the CMIP5-simulated increasing trend of the AWCT in the Arctic Ocean is considerably lower than the observed one since the late 1970s. © 2019, The Author(s).
语种	英语
scopus关键词	annual variation; atmosphere-ocean coupling; climate modeling; CMIP; heat balance; sea ice; water mass; Arctic; Arctic Ocean; Barents Sea; Fram Strait; Kara Sea
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/145913
作者单位	First Institute of Oceanography, Ministry of Natural Resources, Qingdao, China; Laboratory for Regional Oceanography and Numerical Modeling, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, China; Key Laboratory of Marine Science and Numerical Modeling, Ministry of Natural Resources, Qingdao, China; Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany; Physical Oceanography Laboratory/CIMST, Ocean University of China, Qingdao, China; Laboratory for Ocean and Climate Dynamics, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, China; Key Laboratory of Ocean Circulation and Waves, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
推荐引用方式 GB/T 7714	Shu Q.,Wang Q.,Su J.,et al. Assessment of the Atlantic water layer in the Arctic Ocean in CMIP5 climate models[J],2019,53(2020-09-10).
APA	Shu Q.,Wang Q.,Su J.,Li X.,&Qiao F..(2019).Assessment of the Atlantic water layer in the Arctic Ocean in CMIP5 climate models.Climate Dynamics,53(2020-09-10).
MLA	Shu Q.,et al."Assessment of the Atlantic water layer in the Arctic Ocean in CMIP5 climate models".Climate Dynamics 53.2020-09-10(2019).