干旱区生态环境知识资源中心(Arid): Investigation on particulate matter 2.5 (PM2.5) for the past two decades in the central part of Iran, using background meteorological parameters

Arid

DOI	10.1007/s12517-021-08485-2
	Investigation on particulate matter 2.5 (PM2.5) for the past two decades in the central part of Iran, using background meteorological parameters
	Fazel-Rastgar, Farahnaz; Sivakumar, Venkataraman
通讯作者	Fazel-Rastgar, F (corresponding author), Univ KwaZulu Natal, Discipline Phys, Sch Chem & Phys, Private Bag X54001, ZA-4000 Durban, South Africa.
来源期刊	ARABIAN JOURNAL OF GEOSCIENCES
ISSN	1866-7511
EISSN	1866-7538
出版年	2021
卷号	14 期号:21
英文摘要	This study aims to understand the contribution of the weather pattern changes into the wintertime poor air quality with increased dust incidence in the central part of Iran (study area) during the past two decades. A monthly mean of time series using MERRA database for the winter total surface dust (PM2.5) concentration shows an increase of similar to 3.52 kgm(-3) per decade in the central part of Iran during 2000-2018 (study period). A statistical analysis based on the Pearson correlation coefficient has shown a strong negative (medium positive relationship) between central Siberian High surface temperature (mean sea level pressure) and the Iran central total surface dust (PM2.5) concentration. This study shows that two key factors with two different dust sources (internal and external) have contributed to the wintertime poor air quality associated with dust increasing over the study area. On one side, the anomalies of the low-level wind vectors at 850 hPa display the intensified north easterly currents from Aral Sea toward the northeast and central part of Iran and forming an anti-cyclonic circulation (similar to 1.5 ms(-1) in the core) possibly collecting the dust from Dasht-e Kavir desert and Kavir-e Lut into the study region. On the other side, the vertical wind structure analysis shows significant changes in the regional wind circulations. This is associated with enhanced meridional and zonal (positive anomalies) transports leading to rising (increased vertical motion) dust particles from north-east Africa to Syria, Iraq, and then to the western and central parts of Iran and then with negative anomalies of the meridional and zonal transports leading to sinking air (subsidence) toward the surface over the study area.
英文关键词	Siberian High Iran central part PM2.5 Wind circulation
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000707716100002
WOS关键词	CLIMATE-CHANGE ; AIR-POLLUTION ; HAZE POLLUTION ; DUST STORMS ; QUALITY ; CHINA ; IMPACT ; VARIABILITY ; SENSITIVITY ; PRESSURE
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/362592
作者单位	[Fazel-Rastgar, Farahnaz; Sivakumar, Venkataraman] Univ KwaZulu Natal, Discipline Phys, Sch Chem & Phys, Private Bag X54001, ZA-4000 Durban, South Africa
推荐引用方式 GB/T 7714	Fazel-Rastgar, Farahnaz,Sivakumar, Venkataraman. Investigation on particulate matter 2.5 (PM2.5) for the past two decades in the central part of Iran, using background meteorological parameters[J],2021,14(21).
APA	Fazel-Rastgar, Farahnaz,&Sivakumar, Venkataraman.(2021).Investigation on particulate matter 2.5 (PM2.5) for the past two decades in the central part of Iran, using background meteorological parameters.ARABIAN JOURNAL OF GEOSCIENCES,14(21).
MLA	Fazel-Rastgar, Farahnaz,et al."Investigation on particulate matter 2.5 (PM2.5) for the past two decades in the central part of Iran, using background meteorological parameters".ARABIAN JOURNAL OF GEOSCIENCES 14.21(2021).