As a reference, it is said that, in an ordinary kosa, 30 percent of the dust flung up into the air falls and stays in the place where the kosa originates, 20 percent in its vicinity, and 50 percent is moved to, falls in and stays in far places like Japan, Korea and the Pacific Ocean.
参考として、通常の黄砂の場合、舞い上げられた砂塵の3割が発生地に、2割が発生地の周辺地域に、5割が日韓や太平洋などの遠方に運ばれて落下・沈着すると言われている。