气候变化领域集成服务门户(CCPortal): Projected Changes of Water Currents and Circulation in Lake Michigan Under Representative Concentration Pathways Scenarios

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DOI	10.1029/2020JC016651
	Projected Changes of Water Currents and Circulation in Lake Michigan Under Representative Concentration Pathways Scenarios
	Sahoo B.; Mao M.; Xia M.
发表日期	2021
ISSN	21699275
卷号	126 期号:5
英文摘要	The Great Lakes’ atmosphere predominantly signposts signatures of climate change in terms of an elongated summer, depletion of ice-cover, and up-surging lake surface temperature and air temperature, which demands an in-depth comprehension of future lake circulation dynamics. After satisfactory validations for the lake meteorology and hydrodynamics during 2010–2019, historical and future predictions based on a downscaled climate model for the Great Lakes region under Representative Concentration Pathways (RCP) 4.5 and 8.5 scenarios are used to drive the Finite-Volume Community Ocean Model applied to Lake Michigan during the ice-free months of 2010–2069. Substantial rises in lake surface current speed during May–June and September–October are connected to the rising wind speed and air temperature in the lake domain. Under the RCP 4.5 scenario, the study expects a 6.5% per decade relative increase in surface current speed, with a rise of 1.3% in the coastal circulation (within 50-m depth from the coast) until 2050. Surface circulation strength can reach the highest rise (13%) during 2030–2039 and a slight drop (−1%) during 2050–2069. During May–December, only a 0.3% variation is predicted in current magnitudes under RCP 4.5 and 8.5 scenarios. The projections anticipate the occurrence of a stronger, wider, and northward shifting lake gyre with changing lake meteorology. Further analysis indicates that the reduced thermal gradient over the lake surface tends to resist sharp modulations in winds and lake dynamics in the successive decades. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	climatic projection; gyre dynamics; lake circulation; numerical modeling; Representative Concentration Pathway
语种	英语
来源期刊	Journal of Geophysical Research: Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186298
作者单位	CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China; Department of Natural Sciences, University of Maryland Eastern Shore, Princess Anne, MD, United States
推荐引用方式 GB/T 7714	Sahoo B.,Mao M.,Xia M.. Projected Changes of Water Currents and Circulation in Lake Michigan Under Representative Concentration Pathways Scenarios[J],2021,126(5).
APA	Sahoo B.,Mao M.,&Xia M..(2021).Projected Changes of Water Currents and Circulation in Lake Michigan Under Representative Concentration Pathways Scenarios.Journal of Geophysical Research: Oceans,126(5).
MLA	Sahoo B.,et al."Projected Changes of Water Currents and Circulation in Lake Michigan Under Representative Concentration Pathways Scenarios".Journal of Geophysical Research: Oceans 126.5(2021).