气候变化领域集成服务门户(CCPortal): Mesoscale convective system precipitation characteristics over East Asia. Part I: Regional differences and seasonal variations

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DOI	10.1175/JCLI-D-20-0072.1
	Mesoscale convective system precipitation characteristics over East Asia. Part I: Regional differences and seasonal variations
	Li P.; Moseley C.; Prein A.F.; Chen H.; Li J.; Furtado K.; Zhoub T.
发表日期	2020
ISSN	0894-8755
起始页码	9271
结束页码	9286
卷号	33 期号:21
英文摘要	Mesoscale convective systems (MCSs) play an important role in modulating the global water cycle and energy balance and frequently generate high-impact weather events. The majority of existing literature studying MCS activity over East Asia is based on specific case studies and more climatological investigations revealing the precipitation characteristics of MCSs over eastern China are keenly needed. In this study, we use an iterative rain cell tracking method to identify and track MCS precipitation during 2008-16 to investigate regional differences and seasonal variations of MCS precipitation characteristics. Our results show that the middle-to-lower reaches of the Yangtze River basin (YRB-ML) receive the largest amount and exhibit the most pronounced seasonal cycle of MCS precipitation in eastern China. MCS precipitation over YRB-ML can exceed 2.6 mm day-1 in June, contributing over 30.0% of April-July total rainfall. Particularly long-lived MCSs occur over the eastern periphery of the Tibetan Plateau (ETP), with 25% of MCSs over the ETP persisting for more than 18 h in spring. In addition, spring MCSs feature larger rainfall areas, longer durations, and faster propagation speeds. Summer MCSs have a higher precipitation intensity and a more pronounced diurnal cycle except for southeastern China, where MCSs have similar precipitation intensity in spring and summer. There is less MCS precipitation in autumn, but an MCS precipitation center over the ETP still persists. MCSs reach peak hourly rainfall intensities during the time of maximum growth (a few hours after genesis), reach their maximum size around 5 h after genesis, and start decaying thereafter. © 2020 American Meteorological Society.
英文关键词	Iterative methods; Rain; Global water cycle; Mesoscale Convective System; Precipitation characteristics; Precipitation intensity; Regional differences; Seasonal variation; Southeastern china; Yangtze River basin; Storms; convective system; mesoscale meteorology; precipitation (climatology); rainfall; regional climate; seasonal variation; storm; Far East
语种	英语
来源期刊	Journal of Climate
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/171074
作者单位	State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, China Meteorological Administration, Beijing, China; LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; Department for Atmospheric Sciences, National Taiwan University, Taipei, Taiwan; National Center for Atmospheric Research, Boulder, CO, United States; Met Office, Exeter, United Kingdom; CAS Center for Excellence in Tibetan Plateau Earth Sciences, Chinese Academy of Sciences, Beijing, China; University of Chinese Academy of Sciences, Beijing, China
推荐引用方式 GB/T 7714	Li P.,Moseley C.,Prein A.F.,et al. Mesoscale convective system precipitation characteristics over East Asia. Part I: Regional differences and seasonal variations[J],2020,33(21).
APA	Li P..,Moseley C..,Prein A.F..,Chen H..,Li J..,...&Zhoub T..(2020).Mesoscale convective system precipitation characteristics over East Asia. Part I: Regional differences and seasonal variations.Journal of Climate,33(21).
MLA	Li P.,et al."Mesoscale convective system precipitation characteristics over East Asia. Part I: Regional differences and seasonal variations".Journal of Climate 33.21(2020).