Anthropogenic Proportion of Aerosols over the Silk Road Economy Belt

doi:10.7522/j.issn.1000-694X.2018.00098

Journal of Desert Research ›› 2019, Vol. 39 ›› Issue (4): 16-26.DOI: 10.7522/j.issn.1000-694X.2018.00098

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Anthropogenic Proportion of Aerosols over the Silk Road Economy Belt

Zhang Zhijuan^1,2, Chen Bin^1,2, Yi Yuhong³, Liu Jingjing⁴, Jia Rui^1,2, Huang Jianping^1,2

1. College of Atmospheric Sciences, Lanzhou University, Lanzhou 730000, China;
2. Key Laboratory for Semi-Arid Climate Change of the Ministry of Education, Lanzhou University, Lanzhou 730000, China;
3. College of Earth Environment Sciences, Lanzhou University, Lanzhou 730000, China;
4. School of Mechanical and Instrument Engineering, Xi'an University of Technology, Xi'an 710000, China

Received:2018-07-12 Revised:2018-09-04 Online:2019-07-20 Published:2019-07-12

Abstract

Abstract: The spatial and temporal distributions of sulfate, black carbon, organic carbon, and dust aerosols over the regions along the Silk Road Economic Belt, with a decreased rate of 0.0035 per year for total AOD. Mineral dust is the dominant aerosol type in five undeveloped regions where were covered with barren soil and accompanied by active dust activities, accounting for 46%-65% of the total AOD. Total AOD increased at a rate of 0.0059 per year over Pakistan-India region and the mean contribution of anthropogenic aerosol ranged between 62% and 65% in four seasons. Among six regions, the contribution of anthropogenic aerosol was the smallest in North Africa with a minimum of 32.8%, and the largest in Eastern Europe with a maximum of 73.5%. The optical depth of anthropogenic aerosols increased with the increase of population density. In summary, our results indicated that anthropogenic aerosols were predominated over the region along the Silk Road Economic Belt throughout the year and were positively related to population density.

Key words: Silk Road Economy Belt, anthropogenic aerosol, natural aerosol, contribution

CLC Number:

P407

Zhang Zhijuan, Chen Bin, Yi Yuhong, Liu Jingjing, Jia Rui, Huang Jianping. Anthropogenic Proportion of Aerosols over the Silk Road Economy Belt[J]. Journal of Desert Research, 2019, 39(4): 16-26.

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Anthropogenic Proportion of Aerosols over the Silk Road Economy Belt

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