气候变化领域集成服务门户(CCPortal): Urban source term estimation for mercury using a boundary-layer budget method

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DOI	10.5194/acp-19-3821-2019
	Urban source term estimation for mercury using a boundary-layer budget method
	Denzler B.; Bogdal C.; Kern C.; Tobler A.; Huo J.; Hungerbühler K.
发表日期	2019
ISSN	16807316
起始页码	3821
结束页码	3831
卷号	19 期号:6
英文摘要	Mercury is a heavy metal of particular concern due to its adverse effects on human health and the environment. Recognizing this problem, the UN Minamata Convention on Mercury was recently adopted, where signatory countries agreed to reduce anthropogenic mercury emissions. To evaluate the effectiveness of the convention, quantitative knowledge on mercury emissions is crucial. So far, bottom-up approaches have successfully been applied to quantify mercury emission-especially for point sources. Distributed sources make up a large share of the emission; however, they are still poorly characterized. Here, we present a top-down approach to estimate mercury emissions based on atmospheric measurements in the city of Zurich, Switzerland. While monitoring the atmospheric mercury concentrations during inversion periods in Zurich, we were able to relate the concentration increase to the mercury emission strength of the city using a box model. By means of this boundary-layer budget approach, we succeeded in narrowing down the emissions of Zurich to range between 41±8kga-1 (upper bound) and 24±8kga-1 (lower bound). Thereby, we could quantify emissions from mixed, diffuse and point-like sources and derive an annual mercury per capita emission of 0.06 to 0.10ga-1. The approach presented here has the potential to support authorities in setting up inventories and to validate emission estimations derived from the commonly applied bottom-up approaches. Furthermore, our method is applicable to other compounds and to a wide range of cities or other areas, where sources or sinks for mercury and other atmospheric pollutants are presumed. © 2019 Author(s).
语种	英语
scopus关键词	boundary layer; emission; estimation method; mercury (element); point source pollution; urban area; Switzerland; Zurich [Switzerland]; Zurich [Zurich (ADS)]; Mercurialis annua
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/144543
作者单位	Institute for Chemical and Bioengineering, ETH Zurich, Vladimir-Prelog-Weg 1, Zurich, 8093, Switzerland; Paul Scherrer Institute, Villigen, 5232, Switzerland
推荐引用方式 GB/T 7714	Denzler B.,Bogdal C.,Kern C.,et al. Urban source term estimation for mercury using a boundary-layer budget method[J],2019,19(6).
APA	Denzler B.,Bogdal C.,Kern C.,Tobler A.,Huo J.,&Hungerbühler K..(2019).Urban source term estimation for mercury using a boundary-layer budget method.Atmospheric Chemistry and Physics,19(6).
MLA	Denzler B.,et al."Urban source term estimation for mercury using a boundary-layer budget method".Atmospheric Chemistry and Physics 19.6(2019).