气候变化领域集成服务门户(CCPortal): Synoptic weather patterns modulate the frequency, type and vertical structure of summer precipitation over Eastern China: A perspective from GPM observations

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DOI	10.1016/j.atmosres.2020.105342
	Synoptic weather patterns modulate the frequency, type and vertical structure of summer precipitation over Eastern China: A perspective from GPM observations
	Yang Y.; Wang R.; Chen F.; Liu C.; Bi X.; Huang M.
发表日期	2021
ISSN	0169-8095
卷号	249
英文摘要	Precipitation is one of the most important features of the weather in the East Asian monsoon climatic zone; however, the ways in which different synoptic weather patterns modulate the three-dimensional structures of precipitation are yet to be fully understood. Taking the example of eastern China and using the three-dimensional observations of precipitation measured by the dual-frequency precipitation radar onboard the Global Precipitation Measurement mission during 2014–2018, this study explores the rain rate (RR), precipitation frequency (PF), and vertical characteristics of precipitation during summer under four synoptic weather patterns (SWPs) objectively classified using reanalysis data. The four SWPs are referred to as Type 1, 2, 3, and 4. The RRs, PFs, and vertical structures over eastern China are closely linked to the variations of these four large-scale SWPs related to the western Pacific subtropical high (WPSH) and exhibit remarkable regional disparities. The highest PFs of stratiform, convective, and shallow convective precipitation over the whole of eastern China occur under Type 1, followed by Type 2. To the south of 40°N, a more intense RR for both stratiform and convective precipitation appears under Types 1 and 2, while to the north of 40°N these features appear under Types 3 and 4. The Contoured Frequency by Altitude Diagrams for both convective and stratiform precipitation exhibit large positive anomalies of large-value radar reflectivity above (below) 5 km over most regions under Types 2 and 4 (Types 1 and 3). Meanwhile, large positive anomalies for most regions occur under Types 3 and 4 for shallow convective precipitation and are mainly concentrated below the altitude of 4 km. These differences in vertical structures under different SWPs depend mainly on various vertical movements and water vapor moisture supplies related to the location of the WPSH. Our findings provide evidence of a possible linkage between the three-dimensional features of convective, shallow convective, and stratiform precipitation and large-scale WPSH circulation on the synoptic scale. © 2020 Elsevier B.V.
英文关键词	GPM; Synoptic weather patterns; Three-dimensional precipitation structures
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/236903
作者单位	Collaborative Innovation Centre on Forecast and Evaluation of Meteorological Disasters, School of Atmospheric Physics, Nanjing University of Information Science and Technology, Nanjing, China; Key Laboratory for Semi-Arid Climate Change of the Ministry of Education, College of Atmospheric Sciences, Lanzhou University, Lanzhou, China; Anhui Meteorological Information Center, Anhui Meteorological Bureau, Hefei, China; Anhui Province Key Laboratory of Atmospheric Science and Satellite Remote Sensing, Institute of Meteorological Sciences, Hefei, China; Guangzhou Institute of Tropical Oceanography, CMA, China
推荐引用方式 GB/T 7714	Yang Y.,Wang R.,Chen F.,et al. Synoptic weather patterns modulate the frequency, type and vertical structure of summer precipitation over Eastern China: A perspective from GPM observations[J],2021,249.
APA	Yang Y.,Wang R.,Chen F.,Liu C.,Bi X.,&Huang M..(2021).Synoptic weather patterns modulate the frequency, type and vertical structure of summer precipitation over Eastern China: A perspective from GPM observations.Atmospheric Research,249.
MLA	Yang Y.,et al."Synoptic weather patterns modulate the frequency, type and vertical structure of summer precipitation over Eastern China: A perspective from GPM observations".Atmospheric Research 249(2021).