气候变化领域集成服务门户(CCPortal): Regional atmospheric pollutant transport mechanisms over the North China Plain driven by topography and planetary boundary layer processes

CCPortal

DOI	10.1016/j.atmosenv.2019.117098
	Regional atmospheric pollutant transport mechanisms over the North China Plain driven by topography and planetary boundary layer processes
	Quan J.; Dou Y.; Zhao X.; Liu Q.; Sun Z.; Pan Y.; Jia X.; Cheng Z.; Ma P.; Su J.; Xin J.; Liu Y.
发表日期	2020
ISSN	1352-2310
卷号	221
英文摘要	Comprehensive measurements were conducted in winter 2018 and combined with RMPAS-Chem model simulations to analyze the regional transport mechanisms of atmospheric pollutants over the North China Plain. The instruments used consisted of four Vaisala CL51 ceilometers for planetary boundary layer (PBL) heights and aerosol backscatter profiles, two wind profilers, one radiosonde for the profiles of meteorological variables, and an instrumented King-Air 350 aircraft for the profiles of atmospheric pollutants and meteorological variables. Additionally, observations from Environmental Protection Bureau stations were also analyzed, including hourly concentrations of surface PM2.5, SO2, NO2, CO, and O3. The results suggest that regional atmospheric pollutant transport is driven by a combination of topography and PBL processes. First, a mountain-induced vertical vortex forms over downwind regions; this elevates ground pollutants to form an elevated pollutant layer (EPL) at an altitude of 1.4–1.7 km. The EPL is then transported to Beijing via an enhanced southerly wind. Finally, the pollutants in the EPL are transported downward to the surface through PBL processes. © 2019 Elsevier Ltd
关键词	Elevated pollutant layer PBL Regional pollutant transport Vertical vortex
语种	英语
scopus关键词	Aircraft instruments; Atmospheric boundary layer; Atmospheric thermodynamics; Meteorological instruments; Pollution; Topography; Vortex flow; Atmospheric pollutants; Backscatter profiles; Comprehensive measurement; Elevated pollutant layer; Meteorological variables; Planetary boundary layers; Regional pollutants; Vertical vortex; Atmospheric movements; carbon monoxide; nitrogen dioxide; ozone; sulfate; aerosol; atmospheric pollution; backscatter; boundary layer; instrumentation; pollutant transport; radiosonde; vortex; aerosol; air pollutant; air pollution; altitude; Article; atmospheric transport; boundary layer; China; circadian rhythm; environmental temperature; meteorology; particulate matter; priority journal; topography; weather; wind; wind speed; Beijing [China]; China; North China Plain
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/249488
作者单位	Institute of Urban Meteorology, CMA, Beijing, China; Beijing Key Laboratory of Cloud, Precipitation, and Atmospheric Water Resources, Beijing, China; Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; Brookhaven National Laboratory, Upton, NY, United States
推荐引用方式 GB/T 7714	Quan J.,Dou Y.,Zhao X.,et al. Regional atmospheric pollutant transport mechanisms over the North China Plain driven by topography and planetary boundary layer processes[J],2020,221.
APA	Quan J..,Dou Y..,Zhao X..,Liu Q..,Sun Z..,...&Liu Y..(2020).Regional atmospheric pollutant transport mechanisms over the North China Plain driven by topography and planetary boundary layer processes.ATMOSPHERIC ENVIRONMENT,221.
MLA	Quan J.,et al."Regional atmospheric pollutant transport mechanisms over the North China Plain driven by topography and planetary boundary layer processes".ATMOSPHERIC ENVIRONMENT 221(2020).