Regional Patterns of Extreme Precipitation and Urban Signatures in Metropolitan Areas

doi:10.1029/2018JD029718

	Regional Patterns of Extreme Precipitation and Urban Signatures in Metropolitan Areas
	Zhang, Yongyong 1; Pang, Xuan 1; Xia, Jun 2; Shao, Quanxi 3; Yu, Entao 4,5; Zhao, Tongtiegang 6; She, Dunxian 2; Sun, Jianqi 4,5; Yu, Jingjie 1; Pan, Xinyao 7
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
	2019-01-27
卷号	124 期号:2 页码:641-663
关键词	extreme precipitation metrics urban signatures regional classification causal relationship metropolitan area
ISSN号	2169-897X
DOI	10.1029/2018JD029718
通讯作者	Zhang, Yongyong(zhangyy003@igsnrr.ac.cn)
英文摘要	Observations show that metropolitan areas throughout China, which are experiencing rapid urbanization, may have enhanced extreme precipitation. However, the underlying urban-induced mechanism is poorly understood, particularly for entire characteristics of extreme precipitation. Focusing on the Beijing metropolitan area, we investigate regional patterns of extreme precipitation characterized by magnitude, frequency, duration, and timing metrics according to daily observations from 1975 to 2015 at 20 weather stations. Urbanization effects are explored by physical metrics of urbanization, including area, complexity, fragmentation, and dominance deduced from five periods of land use maps. Results show that the magnitudes and frequencies of extreme precipitation have decreased over time, the consecutive precipitation days have been extended, and the Julian date of maximum precipitation has been delayed. Temporal trends at 40% of weather stations are significant. According to precipitation metrics and geographical features, three representative regions are identified: the central urban region, the windward slope of topographic area, and the mountainous region. Compared with the metrics in mountainous region, the magnitudes of windward slope and central urban region are 24.3-60.6% and 5.9-47.3% greater, respectively; the frequencies are increased by 1.17 and 1.10days, respectively; and the average date of maximum precipitation values are delayed by 7.0 and 4.0days, respectively. The magnitudes and frequencies are enhanced by expansion of urban area, complexity, fragmentation, dominance, and heat islands. The durations are positive for urban area and dominance but negative for urban complexity, fragmentation, and heat islands. Furthermore, the effects in central urban region are more significant due to high urbanization rates.
资助项目	Strategic Priority Research Program of the Chinese Academy of Sciences[XDA23040301] ; National Natural Science Foundation of China[41671024] ; International Fellowship Initiative, IGSNRR, CAS[2017VP04]
WOS关键词	CONVECTIVE PRECIPITATION ; FLOW REGIMES ; HEAT ; URBANIZATION ; CLIMATE ; IMPACT ; CLASSIFICATION ; SENSITIVITY ; FREQUENCY ; SURFACES
WOS研究方向	Meteorology & Atmospheric Sciences
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000458845300012
资助机构	Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; International Fellowship Initiative, IGSNRR, CAS
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/49433]
专题	中国科学院地理科学与资源研究所
通讯作者	Zhang, Yongyong
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing, Peoples R China 2.Wuhan Univ, State Key Lab Water Resources & Hydropower Engn S, Wuhan, Hubei, Peoples R China 3.CSIRO Data 61, Wembley, WA, Australia 4.Chinese Acad Sci, Inst Atmospher Phys, Nansen Zhu Int Res Ctr, Beijing, Peoples R China 5.Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Forecast & Evaluat Meteoro, Nanjing, Jiangsu, Peoples R China 6.Sun Yat Sen Univ, Dept Water Resources & Environm, Guangzhou, Guangdong, Peoples R China 7.Beijing Water Sci & Technol Inst, Beijing, Peoples R China 8.China Inst Water Resources & Hydropower Res, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Yongyong,Pang, Xuan,Xia, Jun,et al. Regional Patterns of Extreme Precipitation and Urban Signatures in Metropolitan Areas[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019,124(2):641-663.
APA	Zhang, Yongyong.,Pang, Xuan.,Xia, Jun.,Shao, Quanxi.,Yu, Entao.,...&Zhai, Xiaoyan.(2019).Regional Patterns of Extreme Precipitation and Urban Signatures in Metropolitan Areas.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,124(2),641-663.
MLA	Zhang, Yongyong,et al."Regional Patterns of Extreme Precipitation and Urban Signatures in Metropolitan Areas".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 124.2(2019):641-663.