Abstract
The effect of soil-water content θ in dust-source regions on the Asian dust event was examined using the AMSR-E soil-water product from 2003 to 2011. Soil water content θ ranging from 100 to 150 (g/cm3×103) has the highest correlation with Asian dust events in dust-source regions and over Japan. The NDVI-θ relationship was proposed to determine the effect of surface conditions on the Asian dust event. Actual relationships in 2005 (2006), when the Asian dust events were less frequent (more frequent), were far from the assumption. It can be considered that there are some issues in using the AMSR-E soil-water product when the Normalized Difference Vegetation Index (NDVI) is high because of difficulties in monitoring the soil-water content itself independent of the vegetation structure.
