气候变化领域集成服务门户(CCPortal): Interannual variability in Transpolar Drift summer sea ice thickness and potential impact of Atlantification

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DOI	10.5194/tc-15-2575-2021
	Interannual variability in Transpolar Drift summer sea ice thickness and potential impact of Atlantification
	Belter H.J.; Krumpen T.; Von Albedyll L.; Alekseeva T.A.; Birnbaum G.; Frolov S.V.; Hendricks S.; Herber A.; Polyakov I.; Raphael I.; Ricker R.; Serovetnikov S.S.; Webster M.; Haas C.
发表日期	2021
ISSN	19940416
起始页码	2575
结束页码	2591
卷号	15 期号:6
英文摘要	Changes in Arctic sea ice thickness are the result of complex interactions of the dynamic and variable ice cover with atmosphere and ocean. Most of the sea ice exiting the Arctic Ocean does so through Fram Strait, which is why long-term measurements of ice thickness at the end of the Transpolar Drift provide insight into the integrated signals of thermodynamic and dynamic influences along the pathways of Arctic sea ice. We present an updated summer (July-August) time series of extensive ice thickness surveys carried out at the end of the Transpolar Drift between 2001 and 2020. Overall, we see a more than 20% thinning of modal ice thickness since 2001. A comparison of this time series with first preliminary results from the international Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) shows that the modal summer thickness of the MOSAiC floe and its wider vicinity are consistent with measurements from previous years at the end of the Transpolar Drift. By combining this unique time series with the Lagrangian sea ice tracking tool, ICETrack, and a simple thermodynamic sea ice growth model, we link the observed interannual ice thickness variability north of Fram Strait to increased drift speeds along the Transpolar Drift and the consequential variations in sea ice age. We also show that the increased influence of upward-directed ocean heat flux in the eastern marginal ice zones, termed Atlantification, is not only responsible for sea ice thinning in and around the Laptev Sea but also that the induced thickness anomalies persist beyond the Russian shelves and are potentially still measurable at the end of the Transpolar Drift after more than a year. With a tendency towards an even faster Transpolar Drift, winter sea ice growth will have less time to compensate for the impact processes, such as Atlantification, have on sea ice thickness in the eastern marginal ice zone, which will increasingly be felt in other parts of the sea-ice-covered Arctic. © 2021 BioMed Central Ltd.. All rights reserved.
英文关键词	annual variation; drift behavior; ice cover; ice thickness; Lagrangian analysis; polar region; sea ice; thermodynamics; time series; Arctic; Arctic Ocean; Fram Strait; Laptev Sea
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/202276
作者单位	Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany; Arctic and Antarctic Research Institute, St. Petersburg, Russian Federation; International Arctic Research Center, University of Alaska Fairbanks, Fairbanks, United States; College of Natural Science and Mathematics, University of Alaska Fairbanks, Fairbanks, United States; Finnish Meteorological Institute, Helsinki, Finland; Thayer School of Engineering, Dartmouth College, Hanover, United States; Geophysical Institute, University of Alaska Fairbanks, Fairbanks, United States; Physics/Electrical Engineering (Faculty 1), University of Bremen, Bremen, Germany
推荐引用方式 GB/T 7714	Belter H.J.,Krumpen T.,Von Albedyll L.,et al. Interannual variability in Transpolar Drift summer sea ice thickness and potential impact of Atlantification[J],2021,15(6).
APA	Belter H.J..,Krumpen T..,Von Albedyll L..,Alekseeva T.A..,Birnbaum G..,...&Haas C..(2021).Interannual variability in Transpolar Drift summer sea ice thickness and potential impact of Atlantification.Cryosphere,15(6).
MLA	Belter H.J.,et al."Interannual variability in Transpolar Drift summer sea ice thickness and potential impact of Atlantification".Cryosphere 15.6(2021).