气候变化领域集成服务门户(CCPortal): Development and application of a street-level meteorology and pollutant tracking system (S-TRACK)

CCPortal

DOI	10.5194/acp-22-2221-2022
	Development and application of a street-level meteorology and pollutant tracking system (S-TRACK)
	Zhang, Huan; Gong, Sunling; Zhang, Lei; Ni, Jingwei; He, Jianjun; Wang, Yaqiang; Wang, Xu; Shi, Lixin; Mo, Jingyue; Ke, Huabing; Lu, Shuhua
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	2221
结束页码	2236
卷号	22 期号:4 页码:16
英文摘要	A multi-model simulation system for street-level circulation and pollutant tracking (S-TRACK) has been developed by integrating the Weather Research and Forecasting (WRF), the STAR-CCM+ (computational fluid dynamics model - CFD), and the Flexible Particle (FLEXPART) models. The winter wind environmental characteristics and the potential contribution of traffic sources to nearby receptor sites in a city district of China are analysed with the system for January 2019. It is found that complex building layouts change the structure of the wind field and thus have an impact on the transport of pollutants. The wind speed inside the building block is lower than the background wind speed due to the dragging effect of dense buildings. Ventilation is better when the dominant airflow is in the same direction as the building layout. Influenced by the building layout, the local circulations show that the windward side of the building is mostly the divergence zone, and the leeward side is mostly the convergence zone, which is more obvious for high buildings. With the hypothesis that the traffic sources are uniformly distributed on each road and with identical traffic intensity, the potential contribution ratios (PCRs) of four traffic sources to certain specific sites under the influence of the street-level circulations are estimated with the method of residence time analysis. It is found that the contribution ratio varies with the height of the receptor site. As a result of the generally upward motion in the airflow, the position with the greatest PCR from the four road traffic sources is located at a certain height which is commonly influenced by the distance of this location from the traffic source and the background wind field (about 15 m in this study). The potential contribution of a road to one of the receptor sites is also investigated under different wind directions. The established system and the results can be used to understand the characteristics of urban wind environment and to help the air pollution control planning in urban areas.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000760380800001
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/273895
作者单位	Chinese Academy of Meteorological Sciences (CAMS); Chinese Academy of Sciences; Chinese Academy of Meteorological Sciences (CAMS)
推荐引用方式 GB/T 7714	Zhang, Huan,Gong, Sunling,Zhang, Lei,et al. Development and application of a street-level meteorology and pollutant tracking system (S-TRACK)[J],2022,22(4):16.
APA	Zhang, Huan.,Gong, Sunling.,Zhang, Lei.,Ni, Jingwei.,He, Jianjun.,...&Lu, Shuhua.(2022).Development and application of a street-level meteorology and pollutant tracking system (S-TRACK).ATMOSPHERIC CHEMISTRY AND PHYSICS,22(4),16.
MLA	Zhang, Huan,et al."Development and application of a street-level meteorology and pollutant tracking system (S-TRACK)".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.4(2022):16.