In the area in the west of the Takla Makan Desert, kosa has occurred more frequently corresponding to an increase in the occurrence frequency of strong wind and also corresponding to a decrease in the snow-falling area.
タクラマカン砂漠以西を除く発生地では、強風の発生頻度の増加および積雪面積の減少に伴って黄砂の発生頻度が増えている。