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Atmospheric Aerosol Optical Thickness and Dusty Weather in Northern China in Spring of 2001

SHEN Yan\|bo1,\ SHEN Zhi\|bao1,\ WANG Wan\|fu2(1. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China;2. The Conservation Institute of Dunhuang Academy, Dunhuang736200, China)\ \   
Using the Atmospheric Aerosol Optical Thickness (AOT) data at 5 stations, the characteristics of temporal and spacial distribution of AOT in the northern China in spring, 2001 were analyzed. The results indicate that the higher values (≥1.04) of AOT often appear in each month at 5 stations during the observation period, and it seems to be same as the general temporal and spacial distribution features of the dusty weather occurred in the northern China in spring. The relationships between atmospheric aerosol optical thickness and horizontal visibility as well as the dusty weather were discussed.
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