干旱区生态环境知识资源中心(Arid): Chemical speciation of PM2.5 in Tehran: Quantification of dust contribution and model validation

Arid

DOI	10.1016/j.apr.2020.07.020
	Chemical speciation of PM2.5 in Tehran: Quantification of dust contribution and model validation
	Yasar, Muge; Lai, Alexandra M.; de Foy, Benjamin; Schauer, James J.; Arhami, Mohammad; Hosseini, Vahid
通讯作者	Schauer, JJ
来源期刊	ATMOSPHERIC POLLUTION RESEARCH
ISSN	1309-1042
出版年	2020
卷号	11 期号:10 页码:1839-1846
英文摘要	Each year, considerable levels of dust particles coming from arid regions of the earth contribute to the atmosphere. Because dust has serious environmental and human health effects, predictions of dust concentrations and their contribution to PM surface concentrations are essential for atmospheric research and the implementation of air quality programs and rules. This study aims to assess dust contributions to PM2.5 in Tehran in order to provide guidance for air quality management systems as well as validate the updated Dust Regional Atmospheric Model version 2 (BSC-DREAM8b) and the NMMB/BSC-Dust model using chemical speciation of ground-based measurements of PM2.5. Accurate and reliable measurements are necessary to determine the sources of pollutants as well as to confirm, validate, and improve models. For this purpose, dust concentration and contribution were calculated from chemical speciation of PM2.5 samples that were obtained on a 6 day basis for a whole year from February 2014 to February 2015. The comparison of the dust observations to the model products revealed that model outputs were in good agreement for the monthly averaged values. However, for the daily averaged values, models and ground observation showed a considerable difference. In order to understand possible reasons for the discrepancy, differences between neighboring grid cells were investigated, as well as the effect of sampling frequency. It is found that agreement between models and observations was sensitive to sampling duration and frequency but not to spatial variability between grid cells. This study is the first validation of model outputs with the calculated dust concentration from ground-based chemical speciation of PM2.5 rather than using total PM or aerosol optical depth measurements as a proxy for dust concentrations.
英文关键词	Air pollution Dust Tehran PM2.5 BSC-DREAM8b NMMB/BSC-Dust
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000579860400004
WOS关键词	LONG-RANGE TRANSPORT ; AIR-POLLUTION ; PARTICULATE MATTER ; DESERT DUST ; DAILY MORTALITY ; SAHARAN DUST ; ADMISSIONS ; CYCLE ; MASS
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/326910
作者单位	[Yasar, Muge; Lai, Alexandra M.; Schauer, James J.] Univ Wisconsin, Madison, WI 53706 USA; [de Foy, Benjamin] St Louis Univ, St Louis, MO 63103 USA; [Arhami, Mohammad; Hosseini, Vahid] Sharif Univ Technol, Tehran, Iran
推荐引用方式 GB/T 7714	Yasar, Muge,Lai, Alexandra M.,de Foy, Benjamin,et al. Chemical speciation of PM2.5 in Tehran: Quantification of dust contribution and model validation[J],2020,11(10):1839-1846.
APA	Yasar, Muge,Lai, Alexandra M.,de Foy, Benjamin,Schauer, James J.,Arhami, Mohammad,&Hosseini, Vahid.(2020).Chemical speciation of PM2.5 in Tehran: Quantification of dust contribution and model validation.ATMOSPHERIC POLLUTION RESEARCH,11(10),1839-1846.
MLA	Yasar, Muge,et al."Chemical speciation of PM2.5 in Tehran: Quantification of dust contribution and model validation".ATMOSPHERIC POLLUTION RESEARCH 11.10(2020):1839-1846.