气候变化领域集成服务门户(CCPortal): Numerical modeling of regional transport of PM2.5 during a severe pollution event in the Beijing–Tianjin

CCPortal

DOI	10.1016/j.atmosenv.2021.118393
	Numerical modeling of regional transport of PM2.5 during a severe pollution event in the Beijing–Tianjin–Hebei region in November 2015
	Zhang W.; Hai S.; Zhao Y.; Sheng L.; Zhou Y.; Wang W.; Li W.
发表日期	2021
ISSN	1352-2310
卷号	254
英文摘要	Regional transport is one of the major causes of severe haze pollution in the Beijing–Tianjin–Hebei (BTH) region. However, the process of pollutant transport and the specific mechanisms that affect haze pollution in the BTH region remain unclear. In this study, the WRF-Chem model was used to quantify the contribution of regional transport to a severe pollution event over the BTH region that occurred between October 29 and November 6, 2015. The results show that the regional transport of pollutants from the area south of the BTH region, which was induced by synoptic forcing and topographic effects, contributed up to 70% of the PM2.5 concentration in the BTH region. The peak PM2.5 concentration closely corresponded to a light southerly wind, high relative humidity, low planetary boundary layer height, and weak turbulent kinetic energy. The pollutants derived from regional transport were located mainly at an altitude of 0.5–1.5 km during the accumulating stage and at 0–3 km during the severely polluted stage, which reflects mainly the height of the inversion layer and the strength of the wind, whereas pollution derived from local emissions was restricted mainly to the near-surface layer (<500 m). This study highlights that, in addition to local emission-reduction strategies, multi-provincial cooperative efforts will be necessary to improve air quality in the BTH region. © 2021 Elsevier Ltd
关键词	Beijing-Tianjin-Hebei (BTH) Region PM2.5 Regional transport WRF-Chem
语种	英语
scopus关键词	Air quality; Atmospheric thermodynamics; Boundary layer flow; Emission control; Kinetic energy; Kinetics; Beijing-tianjin-hebei regions; Haze pollutions; Local emissions; PM$-2.5$; Pollutants transport; Regional transport; Synoptic forcing; Topographic effects; Transport of pollutants; WRF/Chem; Boundary layers; air quality; atmospheric pollution; atmospheric transport; boundary layer; numerical model; particulate matter; pollutant transport; air quality; altitude; article; boundary layer; China; humidity; particulate matter 2.5; Beijing [China]; China; Hebei; Tianjin
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/248439
作者单位	College of Oceanic and Atmospheric Sciences, Ocean University of China, Qingdao, 266100, China; Key Laboratory of Physical Oceanography, Ocean University of China, Qingdao, 266100, China
推荐引用方式 GB/T 7714	Zhang W.,Hai S.,Zhao Y.,等. Numerical modeling of regional transport of PM2.5 during a severe pollution event in the Beijing–Tianjin–Hebei region in November 2015[J],2021,254.
APA	Zhang W..,Hai S..,Zhao Y..,Sheng L..,Zhou Y..,...&Li W..(2021).Numerical modeling of regional transport of PM2.5 during a severe pollution event in the Beijing–Tianjin–Hebei region in November 2015.ATMOSPHERIC ENVIRONMENT,254.
MLA	Zhang W.,et al."Numerical modeling of regional transport of PM2.5 during a severe pollution event in the Beijing–Tianjin–Hebei region in November 2015".ATMOSPHERIC ENVIRONMENT 254(2021).