气候变化领域集成服务门户(CCPortal): Seasonal changes in sea ice kinematics and deformation in the Pacific sector of the Arctic Ocean in 2018/19

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DOI	10.5194/tc-15-1321-2021
	Seasonal changes in sea ice kinematics and deformation in the Pacific sector of the Arctic Ocean in 2018/19
	Lei R.; Hoppmann M.; Cheng B.; Zuo G.; Gui D.; Cai Q.; Jakob Belter H.; Yang W.
发表日期	2021
ISSN	19940416
起始页码	1321
结束页码	1341
卷号	15 期号:3
英文摘要	Arctic sea ice kinematics and deformation play significant roles in heat and momentum exchange between the atmosphere and ocean, and at the same time they have profound impacts on biological processes and biogeochemical cycles. However, the mechanisms regulating their changes on seasonal scales and their spatial variability remain poorly understood. Using position data recorded by 32 buoys in the Pacific sector of the Arctic Ocean (PAO), we characterized the spatiotemporal variations in ice kinematics and deformation for autumn-winter 2018/19, during the transition from a melting sea ice regime to a nearly consolidated ice pack. In autumn, the response of the sea ice drift to wind and inertial forcing was stronger in the southern and western PAO compared to the northern and eastern PAO. These spatial heterogeneities gradually weakened from autumn to winter, in line with the seasonal increases in ice concentration and thickness. Correspondingly, ice deformation became much more localized as the sea ice mechanical strength increased, with the area proportion occupied by the strongest (15 %) ice deformation decreasing by about 50 % from autumn to winter. During the freezing season, ice deformation rate in the northern PAO was about 2.5 times higher than in the western PAO and probably related to the higher spatial heterogeneity of oceanic and atmospheric forcing in the north. North-south and east-west gradients in sea ice kinematics and deformation within the PAO, as observed especially during autumn in this study, are likely to become more pronounced in the future as a result of a longer melt season, especially in the western and southern parts. © Author(s) 2021.
英文关键词	atmosphere-ocean coupling; atmospheric forcing; biogeochemical cycle; deformation; heat transfer; heterogeneity; ice thickness; kinematics; momentum transfer; sea ice; seasonal variation; spatiotemporal analysis; Arctic Ocean; Pacific Sector; Southern Ocean
语种	英语
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/202360
作者单位	Key Laboratory for Polar Science of the Mnr, Polar Research Institute of China, Shanghai, China; Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany; Finnish Meteorological Institute, Helsinki, Finland; College of Electrical and Power Engineering, Taiyuan University of Technology, Taiyuan, China; Chinese Antarctic Center of Surveying and Mapping, Wuhan University, Wuhan, China; National Marine Environmental Forecasting Center of the Mnr, Beijing, China
推荐引用方式 GB/T 7714	Lei R.,Hoppmann M.,Cheng B.,et al. Seasonal changes in sea ice kinematics and deformation in the Pacific sector of the Arctic Ocean in 2018/19[J],2021,15(3).
APA	Lei R..,Hoppmann M..,Cheng B..,Zuo G..,Gui D..,...&Yang W..(2021).Seasonal changes in sea ice kinematics and deformation in the Pacific sector of the Arctic Ocean in 2018/19.Cryosphere,15(3).
MLA	Lei R.,et al."Seasonal changes in sea ice kinematics and deformation in the Pacific sector of the Arctic Ocean in 2018/19".Cryosphere 15.3(2021).