气候变化领域集成服务门户(CCPortal): Analysis of the meteorological impact on PM2.5 pollution in Changchun based on KZ filter and WRF-CMAQ

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DOI	10.1016/j.atmosenv.2021.118924
	Analysis of the meteorological impact on PM2.5 pollution in Changchun based on KZ filter and WRF-CMAQ
	Fang C.; Qiu J.; Li J.; Wang J.
发表日期	2022
ISSN	1352-2310
卷号	271
英文摘要	During the “13th Five Year Plan” period, the nationwide mean concentration of PM2.5 in 2020 decreased by 28.8% compared to that in 2015. Exploring the relative impact of anthropogenic emission control and meteorological conditions to the reduction in PM2.5 concentration is a key step in further ensuring the accuracy of plans for the control of atmospheric environmental problems. In this study, the KZ filter and WRF-CMAQ model were used to quantitatively evaluate the relative impact of anthropogenic emission control and meteorological conditions to the decline in PM2.5 concentration. The KZ filter results show that the changes in PM2.5 concentration in Changchun were mainly caused by the short-term (45.95%–54.74%) and seasonal (31.62%–42.65%) fluctuations of pollution precursor emissions and meteorological conditions, and the average decline rate for the PM2.5 concentration after meteorological adjustment (3.36) is lower than that of the original data (3.74). Based on the KZ filter results, the relative impact proportions of meteorological conditions and anthropogenic emission control to the decline in PM2.5 concentration in Changchun are 11.36% and 88.64%, respectively, while the numerical simulation results of the WRF-CMAQ model show values of 14.79% and 85.21%, respectively. The results of both methods indicate that, although both meteorological conditions and anthropogenic emission control are conducive to the improvement of the atmospheric environment, anthropogenic emission control played a major role in the decline in PM2.5 in Changchun from 2015 to 2020, and the impact of meteorological conditions is relatively limited. © 2021 Elsevier Ltd
关键词	Changchun KZ filter Meteorological impact WRF-CMAQ
语种	英语
scopus关键词	Anthropogenic emissions; Changchun; Emissions control; Five-year plans; KZ filter; Meteorological condition; Meteorological impact; PM 2.5; Relative impact; WRF-CMAQ; Emission control; anthropogenic aspects and related phenomena; anthropogenic effect; anthropogenic source; climate classification; climate conditions; concentration (composition); emission control; large eddy simulation; mesoscale meteorology; meteorology; simulation; spatiotemporal analysis; Changchun; China; Jilin
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/248081
作者单位	College of New Energy and Environment, Jilin University, Changchun, 130012, China
推荐引用方式 GB/T 7714	Fang C.,Qiu J.,Li J.,et al. Analysis of the meteorological impact on PM2.5 pollution in Changchun based on KZ filter and WRF-CMAQ[J],2022,271.
APA	Fang C.,Qiu J.,Li J.,&Wang J..(2022).Analysis of the meteorological impact on PM2.5 pollution in Changchun based on KZ filter and WRF-CMAQ.ATMOSPHERIC ENVIRONMENT,271.
MLA	Fang C.,et al."Analysis of the meteorological impact on PM2.5 pollution in Changchun based on KZ filter and WRF-CMAQ".ATMOSPHERIC ENVIRONMENT 271(2022).