LONG-TERM VARIATIONS OF FOG AND MIST IN MAINLAND CHINA DURING 1951-2005 |
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Authors: | WU Dui WU Xiao-jing LI Fei TAN Hao-bo CHEN Jing CHEN Huan-huan CHEN Hui-zhong CAO Zhi-qiang LI Hai-yan and SUN Xian |
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Institution: | Guangzhou Institute of Tropical and Marine Meteorology, China Meteorological Administration, Guangzhou 510080 China;Department of Atmospheric Science, School of Environmental Science and Engineer, Sun Yai-sen University, Guangzhou 510275 China;National Satellite Meteorological Center, Beijing 100081 China;Guangzhou Institute of Tropical and Marine Meteorology, China Meteorological Administration, Guangzhou 510080 China;Guangzhou Institute of Tropical and Marine Meteorology, China Meteorological Administration, Guangzhou 510080 China;Department of Atmospheric Science, School of Environmental Science and Engineer, Sun Yai-sen University, Guangzhou 510275 China;Department of Atmospheric Science, School of Environmental Science and Engineer, Sun Yai-sen University, Guangzhou 510275 China;Guangzhou Institute of Tropical and Marine Meteorology, China Meteorological Administration, Guangzhou 510080 China;National Satellite Meteorological Center, Beijing 100081 China;Guangzhou Institute of Tropical and Marine Meteorology, China Meteorological Administration, Guangzhou 510080 China;Department of Atmospheric Science, School of Environmental Science and Engineer, Sun Yai-sen University, Guangzhou 510275 China |
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Abstract: | Fog is an important indicator of weather. Long-term variations of fog and mist were studied by analyzing the meteorological data from 743 surface weather stations in mainland China during 1951-2005. In climatology, there are more foggy days in the southeast than in the northwest China and more in the winter half of the year than in the summer half. The decadal change of foggy days shows regional variation. Southwest China is the region with the most foggy days, and more than 20 foggy days occur in Sichuan Basin in one year. Persistent heavy fog usually appears in winter and spring over the North China Plain and Northeast China Plain. Misty days are much more frequent in the provinces south of the Yangtze River than in the regions north of it, and there is an obvious increase of misty days after the 1980s. Southwest China is the area with the most number of misty days, and more than 100 misty days occur in Sichuan Basin in a year. |
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Keywords: | mainland China fog mist long-term variation |
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