气候变化领域集成服务门户(CCPortal): Estimation of the NO2 population exposure in the Northern Harbour district of Malta

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DOI	10.1016/j.atmosenv.2020.117918
	Estimation of the NO2 population exposure in the Northern Harbour district of Malta
	Fenech S.; Aquilina N.J.
发表日期	2021
ISSN	13522310
卷号	244
英文摘要	This study presents an estimate of the total NO2 exposure in a polluted and densely populated region in Malta, the Northern Harbour district. To estimate the population mobility, we follow a dynamic approach whereby four microenvironments are mapped onto defined Copernicus Urban Atlas 2012 land use classifications. These include the home (ME_home), work (ME_work), traffic (ME_traffic), and other outdoor activities (ME_other) microenvironments. In addition, generic time-activity profiles are used to estimate the hourly mobility in the different microenvironments depending on weekday or weekend profiles. Measured hourly NO2 ambient concentrations from the air quality network run by the Environment and Resources Authority (ERA) are used in conjunction with the estimated time-activity profiles to calculate the total exposure. The highest NO2 population exposure is estimated for ME_home (71%) as people spend the majority of the time in this microenvironment followed by ME_other (15%), ME_work (10%) and ME_traffic (4%), respectively. In addition, we test the sensitivity of the total NO2 exposure to changes in NO2 concentrations for different microenvironments. The total NO2 exposure using infiltration rates to estimate infiltrated outdoor NO2 concentrations in indoor microenvironments, is up to 25% lower compared to the NO2 exposure estimated using outdoor NO2 concentrations for all microenvironments. Results also suggest a decrease of 3% in the estimated NO2 exposure if a static population is assumed for each microenvironment as opposed to a dynamic one. Exposure assessments such as that presented in this study are essential to aid the development of targeted policies to limit such exposures. © 2020 Elsevier Ltd
英文关键词	Air pollution; Dynamic population; Microenvironments; Nitrogen dioxide; Population exposure
语种	英语
scopus关键词	Air quality; Land use; Air quality networks; Ambient concentrations; Densely populated regions; Dynamic approaches; Exposure assessment; Indoor microenvironments; Landuse classifications; Population exposure; Nitrogen oxides; nitrogen dioxide; air quality; assessment method; atmospheric pollution; concentration (composition); estimation method; mobility; pollution exposure; air monitoring; air pollution; air quality; Article; comparative study; environmental policy; geographic mapping; Malta; microenvironment; population density; population distribution; population exposure; priority journal; traffic; Malta [Southern Europe]
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/144858
作者单位	Department of Geosciences, Faculty of Science, University of Malta, Malta
推荐引用方式 GB/T 7714	Fenech S.,Aquilina N.J.. Estimation of the NO2 population exposure in the Northern Harbour district of Malta[J],2021,244.
APA	Fenech S.,&Aquilina N.J..(2021).Estimation of the NO2 population exposure in the Northern Harbour district of Malta.Atmospheric Environment,244.
MLA	Fenech S.,et al."Estimation of the NO2 population exposure in the Northern Harbour district of Malta".Atmospheric Environment 244(2021).