气候变化领域集成服务门户(CCPortal): Assessment of meteorology vs. control measures in the China fine particular matter trend from 2013 to 2019 by an environmental meteorology index

CCPortal

DOI	10.5194/acp-21-2999-2021
	Assessment of meteorology vs. control measures in the China fine particular matter trend from 2013 to 2019 by an environmental meteorology index
	Gong S.; Liu H.; Zhang B.; He J.; Zhang H.; Wang Y.; Wang S.; Zhang L.; Wang J.
发表日期	2021
ISSN	1680-7316
起始页码	2999
结束页码	3013
卷号	21 期号:4
英文摘要	A framework was developed to quantitatively assess the contribution of meteorology variations to the trend of fine particular matter (PM2.5) concentrations and to separate the impacts of meteorology from the control measures in the trend, based upon the Environmental Meteorology Index (EMI). The model-based EMI realistically reflects the role of meteorology in the trend of PM2.5 and is explicitly attributed to three major factors: deposition, vertical accumulation and horizontal transports. Based on the 2013-2019 PM2.5 observation data and re-analysis meteorological data in China, the contributions of meteorology and control measures in nine regions of China were assessed separately by the EMI-based framework. Monitoring network observations show that the PM2.5 concentrations have declined by about 50 % on the national average and by about 35 % to 53 % for various regions. It is found that the nationwide emission control measures were the dominant factor in the declining trend of China PM2.5 concentrations, contributing about 47 % of the PM2.5 decrease from 2013 to 2019 on the national average and 32 % to 52 % for various regions. The meteorology has a variable and sometimes critical contribution to the year-by-year variations of PM2.5 concentrations, 5 % on the annual average and 10 %-20 % for the fall-winter heavy pollution seasons. © Author(s) 2021. This work is distributed under the Creative Commons Attribution 4.0 License.
语种	英语
scopus关键词	atmospheric pollution; concentration (composition); deposition; emission control; meteorology; particulate matter; pollution control; pollution monitoring; quantitative analysis; seasonal variation; trend analysis; China
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/247105
作者单位	State Key Laboratory of Severe Weather and Key Laboratory of Atmospheric Chemistry of CMA, Chinese Academy of Meteorological Sciences, Beijing, 100081, China; National Meteorological Center, Beijing, 100081, China; School of Environment, State Key Joint Laboratory of Environment Simulation and Pollution Control, Tsinghua University, Beijing, 100084, China; Hangzhou YiZhang Technology Co., Ltd., Hangzhou, China
推荐引用方式 GB/T 7714	Gong S.,Liu H.,Zhang B.,et al. Assessment of meteorology vs. control measures in the China fine particular matter trend from 2013 to 2019 by an environmental meteorology index[J],2021,21(4).
APA	Gong S..,Liu H..,Zhang B..,He J..,Zhang H..,...&Wang J..(2021).Assessment of meteorology vs. control measures in the China fine particular matter trend from 2013 to 2019 by an environmental meteorology index.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(4).
MLA	Gong S.,et al."Assessment of meteorology vs. control measures in the China fine particular matter trend from 2013 to 2019 by an environmental meteorology index".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.4(2021).