气候变化领域集成服务门户(CCPortal): Influence of microphysical processes on the initiation of the mesoscale convective system of a rainstorm over Beijing

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DOI	10.1016/j.atmosres.2021.105518
	Influence of microphysical processes on the initiation of the mesoscale convective system of a rainstorm over Beijing
	Chen Y.; Ping F.; Zhou S.; Shen X.; Sun Y.
发表日期	2021
ISSN	0169-8095
卷号	254
英文摘要	The initiation process of a rainstorm mesoscale convective system (MCS) that occurred in Beijing from 18 to 19 July 2016 was simulated using the Weather Research and Forecasting model, version 3.9, coupled with bulk or bin microphysics schemes. Overall, the rainstorm was simulated well, and thus the simulation was used to further assess the initiation process. Results showed that the convective cell was initiated and developed by the terrain convergence line and the forcing of latent heat release and the cold surface. The interaction between dynamic convergence and the latent heat forcing associated with the microphysical processes was studied separately with bulk and bin microphysics schemes to reveal the effects of the microphysical processes upon the initiation of the MCS. Further analysis of the mass and heat budgets of hydrometeors showed that the microphysical processes played a key role, both with the bulk and bin microphysics schemes, although considerable differences existed between their simulations. First, compared with the bulk scheme, the bin scheme displayed an earlier initiation and lower position of convection, which led to a lower mass center of rainwater, with more liquid water. Second, rainwater particles in the bin scheme simulation mainly came from the collection of cloud water and the melting of graupel, whereas the origin in the bulk scheme simulation was the melting of ice particles. The heat release of hydrometeors enhanced the environmental latent heat and further strengthened the circulation, which, combined with the cooling effects, caused stronger rainfall in the simulation with the bin scheme. © 2021
英文关键词	Bin scheme; Bulk scheme; MCS initiation; Microphysical processes
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/236809
作者单位	Key Laboratory of Meteorological Disaster, Ministry of Education / Joint International Research Laboratory of Climate and Environment Change / Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science and Technology, Nanjing, 210044, China; School of Remote Sensing and Geomatics Engineering, Nanjing University of Information Science and Technology, Nanjing, 210044, China; Laboratory of Cloud-Precipitation Physics and Severe Storms (LACS), Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, 519082, China
推荐引用方式 GB/T 7714	Chen Y.,Ping F.,Zhou S.,et al. Influence of microphysical processes on the initiation of the mesoscale convective system of a rainstorm over Beijing[J],2021,254.
APA	Chen Y.,Ping F.,Zhou S.,Shen X.,&Sun Y..(2021).Influence of microphysical processes on the initiation of the mesoscale convective system of a rainstorm over Beijing.Atmospheric Research,254.
MLA	Chen Y.,et al."Influence of microphysical processes on the initiation of the mesoscale convective system of a rainstorm over Beijing".Atmospheric Research 254(2021).