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DOI	10.1021/acsearthspacechem.0c00306
	Aerosol Optical Properties Measured Using a PAX in Central Asia from 2016 to 2019 and the Climatic and Environmental Outlooks
	Wang, Lin; Zhang, Xin; Ming, Jing
通讯作者	Ming, J (corresponding author), Beacon Sci & Consulting, Malvern, SA 5061, Australia.
来源期刊	ACS EARTH AND SPACE CHEMISTRY
ISSN	2472-3452
出版年	2021
卷号	5 期号:1 页码:95-105
英文摘要	Aerosol optical properties, including absorption and scattering coefficients (B-abs, and B-scat), extinction coefficient (B-ext), single scattering albedo (SSA), and so forth, are critical metrics to estimate the radiative balance of the atmosphere. However, their ground measurements are sparsely distributed in the world, where Central Asia is void in these measurements. We had been performing the measurements of AOPs and BC with a photoacoustic extinctiometer (PAX) in Jimunai, a border town of China neighboring Kazakhstan, Central Asia, from Aug 2016 to Apr 2019. This three-year study first reported statistically significant trends of B-abs, B-scat, B-ext, SSA, and derived concentrations of BC (Mann-Kendall trend test, p-value 0.05) in the Central-Asian area. B-abs and B-scat show increasing trends and SSA was decreasing determined by the greater increasing pace of B-abs than B-scat. Seasonal and diurnal variations of the AOPs were associated with climate shift and residents' commute activity, respectively. The difference in the magnitudes and trends of AOPs between the measurements and satellites' observations advise that more care should be invested when choosing remote-sensing data to represent the AOPs at a specific site. The increasing trend of derived BC concentrations is reflected in the deposition record of BC in a snowpit of the nearby Muz Taw glacier. We suppose that the dramatically increasing BC particles emitted from Jimunai are significant factors triggering the melting of the adjacent mountain glaciers. The outflow of dust from the neighboring Gurbantiinggiit Desert could occasionally invade into Jimunai and deteriorate the local air quality, as evidenced by a probable dust event captured by the PAX on Feb 15, 2018. Finally, we outlook the future perspectives of measurements in Jimunai as a long-standing station.
英文关键词	absorption coefficient (B-abs) scattering coefficient (B-scat) single scattering albedo (SSA) black carbon dust PAX Jimunai Central Asia
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000613199500010
WOS关键词	MUZ TAW GLACIER ; BLACK CARBON ; LIGHT-ABSORPTION ; CHINA ; DUST ; AETHALOMETER ; TRENDS
WOS类目	Chemistry, Multidisciplinary ; Geochemistry & Geophysics
WOS研究方向	Chemistry ; Geochemistry & Geophysics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/349245
作者单位	[Wang, Lin; Zhang, Xin] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China; [Ming, Jing] Beacon Sci & Consulting, Malvern, SA 5061, Australia
推荐引用方式 GB/T 7714	Wang, Lin,Zhang, Xin,Ming, Jing. Aerosol Optical Properties Measured Using a PAX in Central Asia from 2016 to 2019 and the Climatic and Environmental Outlooks[J],2021,5(1):95-105.
APA	Wang, Lin,Zhang, Xin,&Ming, Jing.(2021).Aerosol Optical Properties Measured Using a PAX in Central Asia from 2016 to 2019 and the Climatic and Environmental Outlooks.ACS EARTH AND SPACE CHEMISTRY,5(1),95-105.
MLA	Wang, Lin,et al."Aerosol Optical Properties Measured Using a PAX in Central Asia from 2016 to 2019 and the Climatic and Environmental Outlooks".ACS EARTH AND SPACE CHEMISTRY 5.1(2021):95-105.