气候变化领域集成服务门户(CCPortal): Parameterizing the vertical downward dispersion of ship exhaust gas in the near field

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DOI	10.5194/acp-21-5935-2021
	Parameterizing the vertical downward dispersion of ship exhaust gas in the near field
	Badeke R.; Matthias V.; Grawe D.
发表日期	2021
ISSN	1680-7316
起始页码	5935
结束页码	5951
卷号	21 期号:8
英文摘要	Estimating the impact of ship emissions on local air quality is a topic of high relevance, especially in large harbor cities. For chemistry-transport modeling studies, the initial plume rise and dispersion play a crucial role for the distribution of pollutants into vertical model layers. This study aims at parameterizing the vertical downward dispersion in the near field of a prototype cruise ship, depending on several meteorological and technical input parameters. By using the microscale chemistry, transport and stream model (MITRAS), a parameterization scheme was developed to calculate the downward dispersion, i.e., the fraction of emissions, which will be dispersed below stack height. This represents the local concentration in the vicinity of the ship. Cases with and without considering the obstacle effect of the ship have been compared. Wind speed and ship size were found to be the strongest factors influencing the downward dispersion, which can reach values up to 55 % at high wind speed and lateral wind. This compares to 31 % in the case where the obstacle effect was not considered and shows the importance of obstacle effects when assessing the ground-level pollution situation in ports. © 2021 EDP Sciences. All rights reserved.
语种	英语
scopus关键词	air quality; atmospheric pollution; exhaust emission; parameterization; pollutant; vertical distribution; wind velocity
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/246964
作者单位	Hereon Institute of Coastal Environmental Chemistry, Helmholtz-Zentrum Hereon GmbH, Geesthacht, 21502, Germany; Center for Earth System Research and Sustainability (CEN), Meteorological Institute, Universität Hamburg, Hamburg, 20146, Germany
推荐引用方式 GB/T 7714	Badeke R.,Matthias V.,Grawe D.. Parameterizing the vertical downward dispersion of ship exhaust gas in the near field[J],2021,21(8).
APA	Badeke R.,Matthias V.,&Grawe D..(2021).Parameterizing the vertical downward dispersion of ship exhaust gas in the near field.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(8).
MLA	Badeke R.,et al."Parameterizing the vertical downward dispersion of ship exhaust gas in the near field".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.8(2021).