In the weather below

The frequency of flood disasters in the eastern monsoon region of China is high; The frequency of typhoons in the southeast coastal areas of China is high; Gansu Province, China is located in the northwest inland area of China. In winter and spring, the surface vegetation is scarce and the land is bare, which provides a lot of dust, which is close to the source of winter wind. In winter and spring, it is windy and prone to sandstorms. So this question chooses option C.