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Asian dust storms, which often occur on spring, can long range transport and pass through the China Seas. During this process, it makes some impact on marine ecology and region climate. In this paper, the optical and thermal properties of Asian dust aerosols are firstly presented from the satellite MODIS observations. By comparing strong dust, weak dust, clear water and clouds, the reflectances of dust aerosols over ocean at the visible 0.47 mu m 0.86 mu m, and the near-infrared 1.64 mu m have some significant features, it satisfies R0.47