Sand dust is a weather phenomenon and an environmental problem. Based on the historical weather data of 454 meteorological stations during the period of 2011.1-2017.4, the spatial distribution map of the number of dust days is drawn. And the spatial distribution and variation of dust days in spring are analyzed. The results show that there are significant regional differences in the spatial distribution of sand dust days. One central of dust days is in southern Xinjiang, and the other is in Middle-west Area of Inner Mongolia, And maximum intensity and scope is in March. The annual difference of dust day number is significant.

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2018
Author(s)