干旱区生态环境知识资源中心(Arid): Effect of dust loadings, meteorological conditions, and local emissions on aerosol mixing and loading variability over highly urbanized semiarid countries: United Arab Emirates case study

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DOI	10.1016/j.jastp.2020.105215
	Effect of dust loadings, meteorological conditions, and local emissions on aerosol mixing and loading variability over highly urbanized semiarid countries: United Arab Emirates case study
	Abuelgasim, Abdelgadir 1; Farahat, Ashraf 2
通讯作者	Farahat, Ashraf
来源期刊	JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS
ISSN	1364-6826
EISSN	1879-1824
出版年	2020
卷号	199
英文摘要	Long-term natural and anthropogenic aerosol characteristics over the United Arab Emirates (UAE) are investigated in this study. Aerosol characteristics were analyzed using data from the Moderate Resolution Imaging Spectroradiometer (MODIS), local meteorological stations, and the Aerosol Robotic Network (AERONET) ground-based station during 2006-2015. AOD values significantly increase during the spring and summer seasons and are associated with dust loading during major dust events. The mean annual variation of aerosol loading indicates about a 4.32 and a 11.36% change in the AOD and Angstrom Exponent (AE), respectively, during the study period. Monthly trends show larger AOD and AE variability, 5.4 and 37.8% respectively, with higher aerosol concentrations during the summer. In general, from November to March an upward trend in aerosol characteristics is observed from 2011 to 2015 compared to 2006-2010. In contrast, a neutral to weak decrease in AOD measurements are observed during April-September. Overall, this trend variability is sustained by natural aerosol emissions throughout the year. Meanwhile, a significant increase in AE was measured from May to August of 2011-2015 compared to 2006-2010. This is an indication of an increment of anthropogenic emissions from 2011 to 2015. A correlation between several meteorological parameters (temperature, relative humidity, wind speed, and wind direction) and MODIS measurements was performed to investigate the effect of local meteorological conditions on AOD from 2006 to 2015 over the UAE. Some statistical correlation was observed between AOD, wind speed, and air temperature. A weak correlation was observed between temperature, relative humidity, and AOD, while a strong correlation was observed between wind speed and AOD. Dry soil formed due to a lack of rainfall, along with high summer temperatures and high-speed winds which stimulate dust aerosol loading and lifetime in the atmosphere. Aerosol characteristics, including dominant aerosols, were identified over the UAE using the Mezaria AERONET station. Air mass flow towards the UAE from the North West (NW) and West (W) directions moves over highly polluted regions and desert areas. Coarse-mode aerosol particles dominate over the UAE during March-June associated with the dust season, while a high loading of fine-mode particles is mostly observed during September-January.
英文关键词	AERONET MODIS Meteorological stations Air quality UAE
类型	Article
语种	英语
国家	U Arab Emirates ; Saudi Arabia
收录类别	SCI-E
WOS记录号	WOS:000518867900009
WOS关键词	OPTICAL-PROPERTIES ; AIR-POLLUTION ; MIDDLE-EAST ; AERONET ; PRODUCTS ; MODIS ; NETWORK ; CLIMATE
WOS类目	Geochemistry & Geophysics ; Meteorology & Atmospheric Sciences
WOS研究方向	Geochemistry & Geophysics ; Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314901
作者单位	1.United Arab Emirates Univ, Coll Humanities & Social Sci, Natl Space Sci & Technol Ctr, Dept Geog & Urban Planning, Abu Dhabi 15551, U Arab Emirates; 2.King Fahd Univ Petr & Minerals Dhahran, Coll Gen Studies, Dept Phys, Dhahran 31261, Saudi Arabia
推荐引用方式 GB/T 7714	Abuelgasim, Abdelgadir,Farahat, Ashraf. Effect of dust loadings, meteorological conditions, and local emissions on aerosol mixing and loading variability over highly urbanized semiarid countries: United Arab Emirates case study[J],2020,199.
APA	Abuelgasim, Abdelgadir,&Farahat, Ashraf.(2020).Effect of dust loadings, meteorological conditions, and local emissions on aerosol mixing and loading variability over highly urbanized semiarid countries: United Arab Emirates case study.JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS,199.
MLA	Abuelgasim, Abdelgadir,et al."Effect of dust loadings, meteorological conditions, and local emissions on aerosol mixing and loading variability over highly urbanized semiarid countries: United Arab Emirates case study".JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS 199(2020).