Contribution of warm and moist atmospheric flow to a record minimum July sea ice extent of the Arctic in 2020

doi:10.5194/tc-16-1107-2022

IOCAS-IR > 海洋地质与环境重点实验室

	Contribution of warm and moist atmospheric flow to a record minimum July sea ice extent of the Arctic in 2020
	Liang, Yu 1,2,4; Bi, Haibo 1,2,3; Huang, Haijun 1,2; Lei, Ruibo 4,7; Liang, Xi 5; Cheng, Bin 6; Wang, Yunhe 1
	2022-03-31
发表期刊	CRYOSPHERE
ISSN	1994-0416
卷号	16 期号:3 页码:1107-1123
通讯作者	Bi, Haibo([email protected]) ; Huang, Haijun([email protected])
摘要	The satellite observations unveiled that the July sea ice extent of the Arctic shrank to the lowest value, since 1979, in 2020 with a major ice retreat in the Eurasian shelf seas including Kara, Laptev, and East Siberian seas. Based on the ERA-5 reanalysis products, we explored the impacts of warm and moist air-mass transport on this extreme event. The results revealed that anomalously high energy and moisture converged into these regions in the spring months (April to June) of 2020, leading to a burst of high moisture content and warming within the atmospheric column. The convergence is accompanied by local enhanced downward longwave surface radiation and turbulent fluxes, which is favorable for initiating an early melt onset in the region with severe ice loss. Once the melt begins, solar radiation plays a decisive role in leading to further sea ice depletion due to ice-albedo positive feedback. The typical trajectories of the synoptic cyclones that occurred on the Eurasian side in spring 2020 agree well with the path of atmospheric flow. Assessments suggest that variations in characteristics of the spring cyclones are conducive to the severe melt of sea ice. We argue that large-scale atmospheric circulation and synoptic cyclones acted in concert to trigger the exceptional poleward transport of total energy and moisture from April to June to cause this record minimum of sea ice extent in the following July.
DOI	10.5194/tc-16-1107-2022
收录类别	SCI
语种	英语
资助项目	General Project of Natural Science Foundation of Shandong Province[ZR2020MD100]; National Natural Science Foundation of China[41406215]; National Natural Science Foundation of China[42076185]; National Natural Science Foundation of China[41976219]; Key Deployment Project of Centre for Ocean Mega-Research of Science, Chinese Academy of Sciences[COMS2020Q12]; Open Funds for the Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences[MGE2020KG04]; Academy of Finland[317999]
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:000776044500001
出版者	COPERNICUS GESELLSCHAFT MBH
引用统计	被引频次：10[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/178607
专题	海洋地质与环境重点实验室
通讯作者	Bi, Haibo; Huang, Haijun
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 2.Univ Chinese Acad Sci, Yuquan Rd 19, Beijing 100049, Peoples R China 3.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266061, Peoples R China 4.MNR, Key Lab Polar Sci, Polar Res Inst China, Shanghai 200136, Peoples R China 5.Natl Marine Environm Forecasting Ctr, Key Lab Res Marine Hazard Forecasting Ctr, Beijing 100081, Peoples R China 6.Finnish Meteorol Inst, Polar Meteorol & Climatol, POB 33, Helsinki 00931, Finland 7.Zhejiang Univ, Technol & Equipment Engn Ctr Polar Observat, Zhoushan 316000, Peoples R China
第一作者单位	中国科学院海洋研究所
通讯作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Liang, Yu,Bi, Haibo,Huang, Haijun,et al. Contribution of warm and moist atmospheric flow to a record minimum July sea ice extent of the Arctic in 2020[J]. CRYOSPHERE,2022,16(3):1107-1123.
APA	Liang, Yu.,Bi, Haibo.,Huang, Haijun.,Lei, Ruibo.,Liang, Xi.,...&Wang, Yunhe.(2022).Contribution of warm and moist atmospheric flow to a record minimum July sea ice extent of the Arctic in 2020.CRYOSPHERE,16(3),1107-1123.
MLA	Liang, Yu,et al."Contribution of warm and moist atmospheric flow to a record minimum July sea ice extent of the Arctic in 2020".CRYOSPHERE 16.3(2022):1107-1123.

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