A Satellite-Observed Substantial Decrease in Multiyear Ice Area Export through the Fram Strait over the Last Decade

doi:10.3390/rs14112562

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋地质与环境重点实验室

	A Satellite-Observed Substantial Decrease in Multiyear Ice Area Export through the Fram Strait over the Last Decade
	Wang, Yunhe 3,4; Bi, Haibo 1,3,4; Liang, Yu 2,3,4
刊名	REMOTE SENSING
	2022-06-01
卷号	14 期号:11 页码:17
关键词	fram strait multiyear ice export arctic sea ice atmospheric circulation
DOI	10.3390/rs14112562
通讯作者	Bi, Haibo(bhb@qdio.ac.cn)
英文摘要	Revealing the changes in the Fram Strait (FS) multiyear ice (MYI) export is crucial due to their climate relevance in the context of the loss rate of MYI being faster than that of the total ice in the Arctic. Here, we estimated winter (October-April) MYI area export through the FS over the last 2 decades by using updated MYI concentration data retrieved from active and passive microwave satellite observations. We divided the period into two regimes relative to the ice index: D1 (2002/03-2010/11) and D2 (2012/13-2019/20). The observed variations of winter MYI exports D2 were compared with those of the previous decade D1. The results show that the MYI area exports display strong interannual variability. A significant decrease in MYI export for the periods between D1 and D2 is noted. On average, the wintertime MYI area exports declined sharply by 22% from 3.82 x 10(5) km(2) in D1 to 3.00 x 10(5) km(2) in D2. In addition, the percentage of MYI in the total sea ice outflow through the FS (PCM) also decreased distinctly from 72% in D1 to 59% in D2. Statistics show that weekly sea ice drift across the strait can explain 76% of the MYI area export variability. Furthermore, the dominant atmospheric drivers contributing to the decline in MYI area export during D2 were examined. In the last decade (D2), the strengthened low pressure in the North Atlantic sector, combined with an eastward shift in the axis of dipole anomaly (DA), resulted in reduced MYI advection from the Beaufort Sea and Siberian Coast toward the FS. Moreover, weakened cyclonic activity south of the FS also contributed to the reduction in MYI export during D2.
资助项目	National Natural Science Foundation of China[42106223] ; National Natural Science Foundation of China[42076185] ; Natural Science Foundation of Shandong Province, China[ZR2021QD059] ; Natural Science Foundation of Shandong Province, China[ZR2020MD100] ; China Postdoctoral Science Foundation[2020TQ0322] ; Pilot National Laboratory for Marine Science and Technology (Qingdao)[2022QNLM010204] ; Open Funds for the Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences[MGE2021KG15] ; Open Funds for the Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences[MGE2020KG04] ; Key Deployment Project of Centre for Ocean Mega-Research of Science, Chinese Academy of Sciences[COMS2020Q12]
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
语种	英语
出版者	MDPI
WOS记录号	WOS:000809009700001
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/179470]
专题	海洋研究所_海洋地质与环境重点实验室
通讯作者	Bi, Haibo
作者单位	1.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266237, Peoples R China 2.Univ Chinese Acad Sci, Beijing 101408, Peoples R China 3.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao 266071, Peoples R China 4.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Wang, Yunhe,Bi, Haibo,Liang, Yu. A Satellite-Observed Substantial Decrease in Multiyear Ice Area Export through the Fram Strait over the Last Decade[J]. REMOTE SENSING,2022,14(11):17.
APA	Wang, Yunhe,Bi, Haibo,&Liang, Yu.(2022).A Satellite-Observed Substantial Decrease in Multiyear Ice Area Export through the Fram Strait over the Last Decade.REMOTE SENSING,14(11),17.
MLA	Wang, Yunhe,et al."A Satellite-Observed Substantial Decrease in Multiyear Ice Area Export through the Fram Strait over the Last Decade".REMOTE SENSING 14.11(2022):17.