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Aerosol optical depth climatology over Central Asian countries based on Aqua-MODIS Collection 6.1 data: Aerosol variations and sources
Rupakheti, D (Rupakheti, Dipesh)1; Kang, SC (Kang, Shichang)1,2,6; Bilal, M (Bilal, Muhammad)3; Gong, JX (Gong, Juanxiao)1,6; Xia, XG (Xia, Xiangao)4; Cong, ZY (Cong, Zhiyuan)2,5
Source PublicationATMOSPHERIC ENVIRONMENT
2019
Volume207Issue:0Pages:205-214
DOI10.1016/j.atmosenv.2019.03.020
Abstract

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.

Subject AreaEnvironmental Sciences
WOS IDWOS:000467661600018
Language英语
Indexed BySCI
KeywordRetrieval Algorithm Sara Human Health Dust Storms Dark-target Air-quality Validation Pollution Products Aeronet Region
WOS Research AreaEnvironmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS SubjectEnvironmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
Cooperation Status国际
ISSN1352-2310
Department环境变化与地表过程重点实验室
URL查看原文
PublisherPERGAMON-ELSEVIER SCIENCE LTD
SubtypeArticle
Citation statistics
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/9270
Collection图书馆
Corresponding AuthorRupakheti, D (Rupakheti, Dipesh); Kang, SC (Kang, Shichang)
Affiliation1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou 730000, Gansu, Peoples R China;
2.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China;
3.Nanjing Univ Informat Sci & Technol, Sch Marine Sci, Nanjing 210044, Jiangsu, Peoples R China;
4.Chinese Acad Sci, Inst Atmospher Phys, Lab Middle Atmosphere & Global Environm Observat, Beijing 100029, Peoples R China;
5.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China;
6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China.
Recommended Citation
GB/T 7714
Rupakheti, D ,Kang, SC ,Bilal, M ,et al. Aerosol optical depth climatology over Central Asian countries based on Aqua-MODIS Collection 6.1 data: Aerosol variations and sources[J]. ATMOSPHERIC ENVIRONMENT,2019,207(0):205-214.
APA Rupakheti, D ,Kang, SC ,Bilal, M ,Gong, JX ,Xia, XG ,&Cong, ZY .(2019).Aerosol optical depth climatology over Central Asian countries based on Aqua-MODIS Collection 6.1 data: Aerosol variations and sources.ATMOSPHERIC ENVIRONMENT,207(0),205-214.
MLA Rupakheti, D ,et al."Aerosol optical depth climatology over Central Asian countries based on Aqua-MODIS Collection 6.1 data: Aerosol variations and sources".ATMOSPHERIC ENVIRONMENT 207.0(2019):205-214.
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