气候变化领域集成服务门户(CCPortal): Extratropical cyclones over East Asia: climatology; seasonal cycle; and long-term trend

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DOI	10.1007/s00382-019-05048-w
	Extratropical cyclones over East Asia: climatology; seasonal cycle; and long-term trend
	Lee J.; Son S.-W.; Cho H.-O.; Kim J.; Cha D.-H.; Gyakum J.R.; Chen D.
发表日期	2020
ISSN	0930-7575
起始页码	1131
结束页码	1144
卷号	54 期号:2020-01-02
英文摘要	Extratropical cyclones (ETCs) in East Asia are automatically detected and tracked by applying a Lagrangian tracking algorithm to the 850-hPa relative vorticity field. The ETC statistics, which are derived from ERA-Interim reanalysis dataset from 1979 to 2017, show that East Asian ETCs primarily form over Mongolia, East China, and the Kuroshio Current region with a maximum frequency of six to seven cyclones per month. Both Mongolia and East China ETCs are initiated on the leeward side of the mountains. While Mongolia ETCs downstream of the Altai–Sayan Mountains develop slowly, East China ETCs downstream of the Tibetan plateau develop rapidly as they travel across the warm ocean. Both of them show a maximum frequency and intensity in spring rather than in winter. In contrast, oceanic ETCs across the Kuroshio Current and the Kuroshio–Oyashio Extension, where sea surface temperature gradient is sharp, reach a maximum frequency in winter although their intensity is still maximum in spring. On the decadal timescale, both ETC frequency and intensity exhibit insignificant trends. Exceptions are springtime East China and summertime Mongolia ETCs whose frequencies have slightly decreased since 1979. This declining trend is consistent with the enhanced static stability in the region. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	Climatology; East Asia; Extratropical cyclone (ETC); Lagrangian tracking algorithm; Long-term trend; Seasonal cycle
语种	英语
scopus关键词	algorithm; climatology; extratropical cyclone; seasonal variation; trend analysis; vorticity; China; Mongolia; Qinghai-Xizang Plateau
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/145737
作者单位	School of Earth and Environmental Sciences, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea; Advanced Modeling Infrastructure Team, Numerical Modeling Center, Seoul, South Korea; School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology, Ulsan, South Korea; Department of Atmospheric and Oceanic Sciences, McGill University, Montreal, Canada; Regional Climate Group, Department of Earth Sciences, University of Gothenburg, Göteborg, Sweden
推荐引用方式 GB/T 7714	Lee J.,Son S.-W.,Cho H.-O.,et al. Extratropical cyclones over East Asia: climatology; seasonal cycle; and long-term trend[J],2020,54(2020-01-02).
APA	Lee J..,Son S.-W..,Cho H.-O..,Kim J..,Cha D.-H..,...&Chen D..(2020).Extratropical cyclones over East Asia: climatology; seasonal cycle; and long-term trend.Climate Dynamics,54(2020-01-02).
MLA	Lee J.,et al."Extratropical cyclones over East Asia: climatology; seasonal cycle; and long-term trend".Climate Dynamics 54.2020-01-02(2020).