干旱区生态环境知识资源中心(Arid): Impact assessment of a severe dust storm on atmospheric aerosols over an urban site in India

Arid

DOI	10.18520/cs/v118/i5/737-749
	Impact assessment of a severe dust storm on atmospheric aerosols over an urban site in India
	Taneja, Kanika 1; Ahmad, Shamshad 1; Ahmad, Kafeel 1; Attri, S. D.2
通讯作者	Taneja, Kanika
来源期刊	CURRENT SCIENCE
ISSN	0011-3891
出版年	2020
卷号	118 期号:5 页码:737-749
英文摘要	An intense dust storm occurred over the northwestern part of India between 28 and 31 May 2014, that drastically reduced air quality and visibility over the region. This study evaluates the impact of dust storm on aerosol characteristics over the mega city of Delhi. As the storm reached Delhi on 30 May 2014, the PM 10 concentration soared to an unusually high value of more than 933 mu g m(-3). The aerosol optical properties such as aerosol optical depth (AOD), angstrom ngstrom exponent (AE), single scattering albedo (SSA), and asymmetry parameter were measured using the ground-based sky radiometer installed at India Meteorological Department (IMD), New Delhi. During the dust event, higher AOD was recorded at 500 nm (1.456 +/- 0.158), while AE dropped to 0.287. Large variation in SSA indicated the optical state of dust to be more absorbing in nature. The water vapour content in the atmosphere was also analysed from measurements taken at the 940 nm channel of the instrument. During the study period, radiative forcing at the surface, atmosphere and top of the atmosphere ranged from -31 to - 82, 15 to 92 and 2 to 10 Wm(-2) respectively. On the day of dust storm, large reduction in aerosol radiative forcing was observed at the surface level that caused significant cooling.
英文关键词	Atmospheric aerosol dust storm sky radiometer radiative forcing urban site
类型	Article
语种	英语
国家	India
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000518390300020
WOS关键词	OPTICAL-PROPERTIES ; SUMMER MONSOON ; MIDDLE-EAST ; SUN ; VARIABILITY ; ABSORPTION ; SOFTWARE ; CLIMATE ; AERONET ; DESERT
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314307
作者单位	1.Jamia Millia Islamia, New Delhi 110025, India; 2.Indian Meteorol Dept, New Delhi 110003, India
推荐引用方式 GB/T 7714	Taneja, Kanika,Ahmad, Shamshad,Ahmad, Kafeel,et al. Impact assessment of a severe dust storm on atmospheric aerosols over an urban site in India[J],2020,118(5):737-749.
APA	Taneja, Kanika,Ahmad, Shamshad,Ahmad, Kafeel,&Attri, S. D..(2020).Impact assessment of a severe dust storm on atmospheric aerosols over an urban site in India.CURRENT SCIENCE,118(5),737-749.
MLA	Taneja, Kanika,et al."Impact assessment of a severe dust storm on atmospheric aerosols over an urban site in India".CURRENT SCIENCE 118.5(2020):737-749.