globalchange  > 气候变化与战略
DOI: 10.1016/j.atmosenv.2019.117081
论文题名:
Simulation of the responses of rainstorm in the Yangtze River Middle Reaches to changes in anthropogenic aerosol emissions
作者: Bai Y.; Qi H.; Zhao T.; Zhou Y.; Liu L.; Xiong J.; Zhou Z.; Cui C.
刊名: Atmospheric Environment
ISSN: 1352-2310
出版年: 2020
卷: 220
语种: 英语
英文关键词: Aerosols ; Drops ; Rivers ; Storms ; Aerosol-cloud interaction ; Anthropogenic aerosols ; Rainstorm ; WRF-Chem ; Yangtze River ; Precipitation (meteorology) ; aerosol ; anthropogenic source ; cloud droplet ; cloud water ; emission ; precipitation (climatology) ; rainstorm ; relative humidity ; simulation ; aerosol ; article ; concentration (parameter) ; humidity ; precipitation ; river ; simulation ; water content ; China ; Yangtze River
学科: Aerosol-cloud interaction ; Anthropogenic aerosol emissions ; Rainstorm ; WRF-Chem ; Yangtze River Middle Reaches
中文摘要: The model WRF-Chem sensitivity simulation experiments with changing intensity of anthropogenic emissions sources were applied to simulate a rainstorm process in the Yangtze River Middle Reaches (YRMR) during June 18–19, 2018 to study the responses of clouds and precipitation in the rainstorm to changes in aerosol concentrations in this region. The simulation experiments revealed that the aerosol-cloud interaction during low and high emission phases tended to inhibit and to enhance the precipitation process with the precipitation peak lagging 1–2 h. In the later period of rainstorm, high concentrations of aerosols improved precipitation efficiency significantly, resulting in more centralized clusters of intense precipitation. The cloud droplet number concentrations and cloud water contents demonstrated an increasing logarithmic relationship with increasing PM2.5 concentrations. The PM2.5 concentration of about 25 μg/m3 was estimated as the response threshold of cloud droplet number concentrations from sharp to smooth changes. Before and after the peak precipitation, the relationship between the average precipitation rates and PM2.5 concentrations presented an inverse power function. Aerosol-induced precipitation changes were sensitive to ambient relative humidity (RH). When 80% ≤ RH < 85%, the response of precipitation to aerosol emissions was in equilibrium. When RH < 80% or RH > 85% increasing anthropogenic aerosol emissions tended to inhibit or enhance precipitation, especially in the case of low (high) aerosol emissions. © 2019 Elsevier Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/161119
Appears in Collections:气候变化与战略

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作者单位: Hubei Key Laboratory for Heavy Rain Monitoring and Warning Research, Institute of Heavy Rain, China Meteorological Administration, Wuhan, 430205, China; Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, Nanjing University of Information Science and Technology, Nanjing, 210044, China

Recommended Citation:
Bai Y.,Qi H.,Zhao T.,et al. Simulation of the responses of rainstorm in the Yangtze River Middle Reaches to changes in anthropogenic aerosol emissions[J]. Atmospheric Environment,2020-01-01,220
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