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Dust incorporation from areas under the pathway of Asian dust transport traced from stable isotopes of carbonate particles

Hiroyuki Kitagawa  
【摘要】:Dust emission from the arid and semiarid areas in northwestern China such as the Gobi Deserts and Taklimakan Desert(hereafter,mentioned as Asian dust) is transported by the westerlies and the winter monsoon winds to Korea,Japan and the Pacific,even across the Pacific to the United States and Canada(Liu and Diamond,2005).The Asian dust alters the chemical functions of the atmosphere(Sokolik and Toon,1996;Husar et al.,2001),cloud physical process(Isono et al.,1959;Yin et al.,2002) and the biogeochemical process in Northwestern Pacific(Zhuang et al.,1992;Mahowald et al.,2005).The Asian dust events,accompanying with increasing concentration and decreasing visibility in the atmosphere intensively,cause seriously social and economic problems at the downwind mega-cities.

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