Atmospheric input of trace elements to the western Pacific Ocean and the Kuroshio ocean area

In November 1992 to February 1993 (IOP TOGA-COARE), many aerosol samples, rainwater samples and dry deposition samples were collected on the vessel Xiangyanghong No.5 in the ocean area of IOP (2°S, 155°E) The time variations of concentration of crustal elements, sea salt elements are not very large.The dry deposition fluxes of crustal elements are related to the sources of air flows.According to the aerosol samples collected in the western Pacific Ocean during eight cruises under the China-U.S.joint TOGA project from December 1985 to July 1990 and the aerowl dato collected in the Kurachio ocean area from 1987 to 1991 (China-Japan Kuroshio joint-investigation), seasonal average dry deposition fluxes of crustal elements, pollutant elements and sea-salt elements are calculated.It is found that the dry deposition fluxes of elements Fe, Co, Zn and Sb have their highest values in spring in the Kuroshio ocean area because of the influencing of Asian dust-storm.But in the western Pacific Ocean they reach the highest values in autumn.In the ocean area of IOP, the dry deposition ituxes are the smallest.