Temporal and spatial relationship between fine particle aerosols and short-lived trace gas in Chinese ocean

被引：0
|
作者：
Xu B. [1 ]
Wei Y. [2 ,3 ]
Zhang H. [1 ]
Song Y. [1 ]
Yang Z. [1 ]
机构：
[1] Beijing PieSat Information Technology Co., Ltd., Beijing
[2] Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing
[3] University of Chinese Academy of Sciences, Beijing
来源：
Yaogan Xuebao/Journal of Remote Sensing | 2020年 / 24卷 / 02期
关键词：
Aerosols; Anthropogenic emissions; AOD[!sub]fine[!/sub; China's neighboring sea; Remote sensing; Spatiotemporal change; Trace gases;
D O I：
10.11834/jrs.2020r18231
中图分类号：
学科分类号：
摘要：
Aerosols have important effects on global energy balance, cloud properties, rainfall frequency, and atmospheric circulation. To understand the impact of aerosols on climate change, this paper explores the quantitative relationship between fine particle aerosols and gases.Aerosol Optical Depth (AOD), Fine Mode Fraction (FMF) from MODIS, and trace gas (SO2, NO2, and HCHO) from OMI were used to analyze the quantitative relationship between the fine aerosols and trace gases over the Yellow Sea, East China Sea, and South China Sea between 2006 and 2015.First, the mean values of the aerosols and trace gases were analyzed. The mean values of AODfine, SO2, NO2, and HCHO decreased orderly in the Yellow Sea, South China Sea, and East China Sea all decreased. Meanwhile, the sensitivity analysis of the relationship between aerosols and trace gases revealed that: AODfine is most sensitive to SO2 with a sensitivity of 0.424, which may be ascribed to the anthropogenic emissions from the coastal cities of Eastern China. Meanwhile, East China Sea and South China Sea demonstrate high sensitivity to HCHO (0.664 and 0.545, respectively), which can be ascribed to the biomass combustion in Southeast Asia and Southern China. The seasonal correlation analysis of aerosols and trace gases in these three regions reveal that the AODfine in the Yellow Sea has a strong correlation with SO2 during summer and autumn (R>0.5) mainly due to the high temperature and humidity. A significant correlation is observed between HCHO and AODfine was significant in the East China Sea (R=0.57), and a relatively good correlation is observed between HCHO and AODfine in the South China Sea was relatively good (R=0.57) due to regional and seasonal changes.In sum, fine particle modal aerosol has a significant correlation with trace gases, and such relationship provides a scientific basis for understanding the aerosol processes, especially those of artificial aerosols dominated by fine particles. © 2020, Science Press. All right reserved.
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页码：173 / 181
页数：8
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