ESTIMATION OF DRY DEPOSITION OF DUST IN ASSOCIATION WITH A WINTER-TIME YELLOW SAND EVENT OBSERVED OVER SOUTH KOREA DURING 25 TO 28 JANUARY 1999

摘要

Every year in spring the Korean peninsula including Japan frequently experiences Yellow Sand events that originate from inland Asia in the regions of loess, Gobi and sand deserts. Synoptically, the Yellow Sand phenomenon in Korea is reported as a weather phenomenon when the Asian dust is suspended in the atmosphere to reduce the visibility. Usually the color of the sky is often seen to be yellowish so that this weather phenomenon is called Yellow Sand.The consequence of the dust events is not only soiling the exposed materials but also causing respiratory and eye disease and also causing the change of chemical compositions of soil due to dust deposition on the ground. In addition, the production and long-range transport of mineral aerosols from the Asian continent impact atmospheric chemistry and the radiative balance over the region and biological productivity in the North Pacific Ocean (Gao et al., 1992).