The Climatic Features of Heavy Snow,Snowstorm and Snow Disaster in Inner Mongolia

The climatic features of heavy snow,snowstorm and snow disaster happened in Inner Mongolia were analyzed by using of the historical data of 131 meteorological observing stations in Inner Mongolia and the aerological 500hPa data in Asian-European region from 1961 to 1988.The analyses show that most of the heavy snow,snowstorm usually occurred in the east and north of Inner Mongolia,but the most severe snow disaster took place in the north of the area,and Zuodongxue(keeping snows cover in whole winter) is essential condition of snow disasters,and the meteorological parameters forming Zuodongxue were determined.The circulation features of heavy snow,snowstorm and snow disaster in Inner Mongolia were summarized.

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