Scenario Changes of Atlantic Water in the Arctic Ocean

doi:10.1175/JCLI-D-14-00522.1

	Scenario Changes of Atlantic Water in the Arctic Ocean
	Long, Zhenxia; Perrie, Will
刊名	JOURNAL OF CLIMATE
	2015-07
卷号	28 期号:14 页码:5523-5548
ISSN号	0894-8755
DOI	10.1175/JCLI-D-14-00522.1
英文摘要	The authors explore possible temperature modifications of the Atlantic Water Layer (AWL) induced by climate change, performing simulations for 1970 to 2099 with a coupled ice-ocean Arctic model (CIOM). Surface fields to drive the CIOM were provided by the Canadian Regional Climate Model (CRCM), driven by outputs from the Canadian Centre for Climate Modelling and Analysis (CCCma) Coupled Global Climate Model, version 3 (CGCM3) following the A1B climate change scenario. In the present climate, represented as 1990-2009, the CIOM can reliably reproduce the AWL compared to Polar Science Center Hydrographic Climatology (PHC) data. For the future climate, assuming the A1B climate change scenario, there is a significant increase in water volume transport into the central Arctic Ocean through Fram Strait due to the weakened atmospheric high pressure system over the western Arctic and an intensified atmospheric low pressure system over the Nordic seas. The AWL temperature tends to decrease from 0.36 degrees C in the 2010s to 0.26 degrees C in the 2060s. In the vertical, the warm Atlantic water core slightly expands before the 2030s, significantly shrinks after the 2050s, and essentially disappears by 2070-99, in the southern Beaufort Sea. The temperature decrease after 2030 is mainly due to the reduced heat fluxes in the Kara and Barents Seas. In the northeastern Barents and Kara Seas, the loss of sea ice increases the heat loss from the Atlantic water and reduces the water temperature near the bottom, contributing to decreased heat fluxes into the central Arctic Ocean, as well as decreased AWL temperature at central Arctic Ocean intermediate layers. In addition, the vertically integrated heat loss also plays an important role in the AWL cooling process.
WOS关键词	SEA-SURFACE HEIGHT ; CLIMATE-CHANGE ; ICE MODEL ; BEAUFORT SEA ; NORDIC SEAS ; CIRCULATION ; BASIN ; SIMULATIONS ; CONVECTION ; TRANSPORTS
WOS研究方向	Meteorology & Atmospheric Sciences
语种	英语
出版者	AMER METEOROLOGICAL SOC
WOS记录号	WOS:000359637800003
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/26561]
专题	自然资源部第一海洋研究所
通讯作者	Perrie, Will
作者单位	Bedford Inst Oceanog, Fisheries & Oceans Canada, Dartmouth, NS B2Y 4A2, Canada
推荐引用方式 GB/T 7714	Long, Zhenxia,Perrie, Will. Scenario Changes of Atlantic Water in the Arctic Ocean[J]. JOURNAL OF CLIMATE,2015,28(14):5523-5548.
APA	Long, Zhenxia,&Perrie, Will.(2015).Scenario Changes of Atlantic Water in the Arctic Ocean.JOURNAL OF CLIMATE,28(14),5523-5548.
MLA	Long, Zhenxia,et al."Scenario Changes of Atlantic Water in the Arctic Ocean".JOURNAL OF CLIMATE 28.14(2015):5523-5548.