Ocean Color Satellite-derived Salinity Using Colored Dissolved Organic Matter(CDOM) in River-influenced Region

Abstract

Outflow from river (river water plume) significantly influences physical and biological processes in estuarine and coastal environments. It is important to understand seasonal and spatial variability of dynamics and distribution of the river water plume. Colored dissolved organic matter (CDOM) of terrestrial origin is transported by river water. For monitoring the river water plume, it is one of useful methods to utilize the product of CDOM derived from ocean-color satellite. Moreover, as a result of the river influence, many previous studies have been published that terrestrial CDOM was inversely correlated with sea surface salinity in various coastal regions. If satellite-derived CDOM can be used as a tracer of the river plume, mapping of salinity should be possible for the plume. In the present study, we will introduce the method for deriving sea surface salinity from ocean-color satellite data in the East China Sea.