气候变化领域集成服务门户(CCPortal): Multiscale analysis of a record-breaking heavy rainfall event in Guangdong, China

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DOI	10.1016/j.atmosres.2019.104703
	Multiscale analysis of a record-breaking heavy rainfall event in Guangdong, China
	Li H.; Wan Q.; Peng D.; Liu X.; Xiao H.
发表日期	2020
ISSN	0169-8095
卷号	232
英文摘要	An extremely heavy rainfall event hit eastern Guangdong province, China on 30 August 2018, during which Gaotan station observed a record-breaking 1056.7 mm of precipitation in a 24-h period. Using analysis data, observations from soundings, automatic weather stations and radar, as well as a Lagrangian model, the multiscale characteristics of this record-breaking rainfall event are investigated, including large-scale forcing, moisture transport, mesoscale circulations, and microphysical features. The monsoon depression near the Indo-China Peninsula and the Beibu Gulf played an important role in sustaining the moisture supply from main source regions of the Arabian Sea, the Bay of Bengal and the South China Sea. The low-level winds turned from southwesterly to southerly-southeasterly, favoring back-building processes mainly due to orographic lifting by the southwest-northeast oriented Mt. Lianhua. The repeated formation and maintenance of rainbands along Mt. Lianhua, which were attributable to the back-building processes, local convergence near Gaotan, and the high terrain to the northeast of Gaotan, accounted for the extremely heavy rainfall over Gaotan. Graupel dominated above the freezing level over Gaotan during the period of intense precipitation, suggesting that riming and melting processes were vital contributors to the surface heavy rainfall. © 2019 Elsevier B.V.
英文关键词	Back-building processes; Heavy rainfall; Moisture transport; Topography
学科领域	Lagrange multipliers; Moisture; Radar stations; Topography; Weather information services; Automatic weather stations; Building process; Heavy rainfall; Intense precipitation; Mesoscale circulation; Moisture transport; Monsoon depressions; Multi scale analysis; Rain; extreme event; melting; moisture transfer; monsoon; orographic effect; precipitation (climatology); topography; wind; China; Guangdong
语种	英语
scopus关键词	Lagrange multipliers; Moisture; Radar stations; Topography; Weather information services; Automatic weather stations; Building process; Heavy rainfall; Intense precipitation; Mesoscale circulation; Moisture transport; Monsoon depressions; Multi scale analysis; Rain; extreme event; melting; moisture transfer; monsoon; orographic effect; precipitation (climatology); topography; wind; China; Guangdong
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/120580
作者单位	Institute of Tropical and Marine Meteorology, China Meteorological Administration, Guangzhou, China
推荐引用方式 GB/T 7714	Li H.,Wan Q.,Peng D.,et al. Multiscale analysis of a record-breaking heavy rainfall event in Guangdong, China[J],2020,232.
APA	Li H.,Wan Q.,Peng D.,Liu X.,&Xiao H..(2020).Multiscale analysis of a record-breaking heavy rainfall event in Guangdong, China.Atmospheric Research,232.
MLA	Li H.,et al."Multiscale analysis of a record-breaking heavy rainfall event in Guangdong, China".Atmospheric Research 232(2020).