长株潭城市群气溶胶时空分布与传输规律

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Abstract

In order to capture the spatial-temporal variations and regional transport characteristics of air pollution in Changsha- Zhuzhou-Xiangtan urban agglomeration, the spatial-temporal variations of aerosol optical depth (AOD) were analyzed using the MODIS MAIAC data from 2008 to 2016. On this basis, the potential transport characteristics of air pollutant were studied using the Hybrid Single Particle Lagrangian Integrated Trajectory (HYSPLIT) model and global data assimilation system (GDAS) meteorological element data. Results showed that AOD showed a downward trend, with the most significant decline in spring and summer. The spatial distribution of AOD was mainly characterized by the high in west and north while low in east and south. In the meantime, it was closely related to economic development and urbanization. In addition, the long-distance transportation (>1500km), medium-distance transportation (500~1500km) and local transportation (0~500km) rates of air pollution were 16.56%, 30.7% and 52.74%, respectively. The potential diffusion of air pollutant mainly affected Hubei, Jiangxi, Anhui, Guangdong, Guangxi, Jiangsu and Zhejiang. This study not only helps to understand the spatial-temporal variations of air pollution in the Changsha-Zhuzhou- Xiangtan urban agglomeration, but also provides a scientific auxiliary basis for the regional joint prevention and control and the beautiful China construction.

Key words： aerosol optical depth spatial-temporal distribution forward trajectory transport path Changsha-Zhuzhou-Xiangtan urban agglomeration

Received: 15 October 2019

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P407

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	Articles by authors
	DING Ying
	FENG Hui-hui
	ZOU Bin
	LIU Ning
	YE Shu-chao

Cite this article:

DING Ying,FENG Hui-hui,ZOU Bin等. Spatial-temporal distribution and transport characteristic of aerosol in Changsha-Zhuzhou-Xiangtan urban agglomeration[J]. CHINA ENVIRONMENTAL SCIENCECE, 2020, 40(5): 1906-1914.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2020/V40/I5/1906

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