Abstract
Spatial and temporal characteristics of atmospheric visibility in China were investigated by using monitored meteorological data. The results show that The atmospheric lowest visibility (<10km) occurrence frequency in China can be observed in the east of Sichuan, Chongqing, and the east of Guizhou. The visibility in most regions of China exhibits a decreasing trend from 1980 to 2010. It is also found that fog is major weather phenomenon affecting visibility in China. The second is precipitation except the Northwest and Inner Mongolia, where sand and dust is the major weather phenomenon affecting visibility. Our results also identify the total radiation under the condition of low visibility is less than that under the condition of normal, meanwhile, the atmospheric scattered radiation increase. Net radiation in the condition of low visibility is less than that in the normal condition in most cases over China.
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