气候变化领域集成服务门户(CCPortal): Aerosol optical depth climatology over Central Asian countries based on Aqua-MODIS Collection 6.1 data: Aerosol variations and sources

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DOI	10.1016/j.atmosenv.2019.03.020
	Aerosol optical depth climatology over Central Asian countries based on Aqua-MODIS Collection 6.1 data: Aerosol variations and sources
	Rupakheti, Dipesh; Kang, Shichang; Bilal, Muhammad; Gong, Juanxiao; Xia, Xiangao; Cong, Zhiyuan
通讯作者	Rupakheti, D ; Kang, SC (通讯作者)
发表日期	2019
ISSN	1352-2310
EISSN	1873-2844
起始页码	205
结束页码	214
卷号	207
英文摘要	The aim of this study is to explore the aerosol optical depth (AOD) - an indicator of air quality, based on satellite data over Central Asia. Due to limited studies and lack of knowledge regarding AOD variations over this region, five countries (Kazakhstan, Kyrgyzstan, Tajikistan, Turkmenistan, and Uzbekistan) and fifteen sites including the capital cities were selected for the analysis. Long-term Aqua-MODIS Collection 6.1 Deep Blue (DB) AOD observations at 10 km spatial resolution were obtained for 2002-2017 and the angstrom ngstrom exponent (AE) was calculated using spectral AOD observations. AOD and AE were explored based on seasonal and inter-annual scale. The relationship between aerosol loading and economic indicator (gross domestic product) was also analyzed. Highest frequencies of low AOD and high AE were observed in all countries. Average AOD (AE) values during the study period were 0.17 +/- 0.09 (1.29 +/- 0.17) for Kazakhstan, 0.11 +/- 0.13 (1.41 +/- 0.13) for Kyrgyzstan, 0.17 +/- 0.14 (1.36 +/- 0.18) for Tajikistan, 0.20 +/- 0.10 (1.10 +/- 0.28) for Turkmenistan, and 0.18 +/- 0.09 (1.18 +/- 0.24) for Uzbekistan. Summer season experienced highest aerosol loading over Kazakhstan, Tajikistan, and Uzbekistan, whereas spring season experienced highest aerosol loading over Kyrgyzstan and Turkmenistan possibly due to the influence of less precipitation and dust from the arid regions. All fifteen cities selected in this study exhibited increasing aerosol load. Aerosol types based on the relationship between AOD and AE were investigated, results suggested the clean continental aerosol as a major aerosol type over the region, whereas the contribution of mixed aerosols was observed during spring and summer seasons. This study suggests for establishment of ground-based aerosol monitoring stations network and inclusions of modeling works to understand the complex nature of aerosol over this vast landmass.
关键词	RETRIEVAL ALGORITHM SARA HUMAN HEALTH DUST STORMS DARK-TARGET AIR-QUALITY VALIDATION POLLUTION PRODUCTS AERONET REGION
英文关键词	MODIS; DB; AOD; Angstrom exponent; Aerosol classification; Central asia
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000467661600018
来源期刊	ATMOSPHERIC ENVIRONMENT
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259514
推荐引用方式 GB/T 7714	Rupakheti, Dipesh,Kang, Shichang,Bilal, Muhammad,et al. Aerosol optical depth climatology over Central Asian countries based on Aqua-MODIS Collection 6.1 data: Aerosol variations and sources[J]. 中国科学院青藏高原研究所,2019,207.
APA	Rupakheti, Dipesh,Kang, Shichang,Bilal, Muhammad,Gong, Juanxiao,Xia, Xiangao,&Cong, Zhiyuan.(2019).Aerosol optical depth climatology over Central Asian countries based on Aqua-MODIS Collection 6.1 data: Aerosol variations and sources.ATMOSPHERIC ENVIRONMENT,207.
MLA	Rupakheti, Dipesh,et al."Aerosol optical depth climatology over Central Asian countries based on Aqua-MODIS Collection 6.1 data: Aerosol variations and sources".ATMOSPHERIC ENVIRONMENT 207(2019).