A Discussion of the Climate Feature and Impact of Sand Dust Weather in Shannxi Province

According to “sand dust weather warning and service temporary rule” formulated by China Meteorological Administration, climate features, distribution and impact of sand dust weather in Shaanxi province are discussed based on data of 94 meteorological stations from 1970 to 2000. Here sand dust weather includes sandstorm, blowing sand and floating dust. Result indicates that more sand dust weather occured in northern Shaanxi than in the southern part, and more sandstorm in Shanbei; There is more blowing sand in northern Shanbei, while more floating dust appeared in southern Shanbei, Guanzhong and Shannan. In addition, the sand dust weather appears more frequently in the spring and winter months than in other months, especially in Apr. In recent 30 years, the sand dust weather tends to decrease.

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