气候变化领域集成服务门户(CCPortal): Diurnal variation of summer precipitation modulated by air pollution: Observational evidences in the beijing metropolitan area

CCPortal

DOI	10.1088/1748-9326/ab99fc
	Diurnal variation of summer precipitation modulated by air pollution: Observational evidences in the beijing metropolitan area
	Zheng Z.; Zhao C.; Lolli S.; Wang X.; Wang Y.; Ma X.; Li Q.; Yang Y.
发表日期	2020
ISSN	17489318
卷号	15 期号:9
英文摘要	Studying precipitation diurnal variation characteristics is crucial to better understand their formation mechanism. Moreover, it is fundamental in assessing regional climate variability and to validate the effectiveness of cloud and precipitation parameterization schemes in weather and climate models. Based on observational data from 2008 to 2017, this manuscript objective is to assess the aerosol effects on summer precipitation on an hourly-scale diurnal variation basis in the Beijing metropolitan area. The results put in evidence that the precipitation frequency and duration on polluted days were 25.0% and 14.8% lower with respect to clean days. No significant differences were observed in total daily accumulated rainfall between clear and polluted days. While heavy precipitation mean intensity on polluted days increased by 13.5%, which is potentially linked with aerosol microphysical effects. Note that precipitation occurs earlier on polluted days, with peak time of 1 ∼ 2-hour in advance compared with clean days over the urban areas of Beijing, which may be primarily ascribed to the influence of advanced turning local circulation of mountain-valley breezes and urban heat island circulation due to aerosol-radiation effects. © 2020 The Author(s). Published by IOP Publishing Ltd.
语种	英语
scopus关键词	Aerosols; Climate models; Radiation effects; Accumulated rainfall; Formation mechanism; Heavy precipitation; Parameterization schemes; Precipitation frequency; Summer precipitation; Urban heat island circulation; Weather and climate models; Precipitation (meteorology); atmospheric pollution; diurnal variation; metropolitan area; observational method; precipitation (climatology); summer; Beijing [China]; China
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/153779
作者单位	Institute of Urban Meteorology, China Meteorological Administration, Beijing, China; School of Atmospheric Physics, Nanjing University of Information Science and Technology, Nanjing, China; School of Earth and Space Sciences, University of Science and Technology of China, Hefei, China; National Research Council (CNR), Institute of Methodologies for Environmental Analysis, Tito Scalo, Italy
推荐引用方式 GB/T 7714	Zheng Z.,Zhao C.,Lolli S.,et al. Diurnal variation of summer precipitation modulated by air pollution: Observational evidences in the beijing metropolitan area[J],2020,15(9).
APA	Zheng Z..,Zhao C..,Lolli S..,Wang X..,Wang Y..,...&Yang Y..(2020).Diurnal variation of summer precipitation modulated by air pollution: Observational evidences in the beijing metropolitan area.Environmental Research Letters,15(9).
MLA	Zheng Z.,et al."Diurnal variation of summer precipitation modulated by air pollution: Observational evidences in the beijing metropolitan area".Environmental Research Letters 15.9(2020).