Correlation between SST and CDOM during Summer Coastal Upwelling along the Southeast Coast of Korea

Recently emergence of cold water from coastal upwelling has caused frequent damages to the coastal aquaculture along the southeast coast of Korea. So, the necessity of early forecasting of cold water using satellite data has emerged. Coastal upwelling generally detected by meteorological satellites of sea surface temperature (SST) data. However, this study tries to seek a possibility of use of ocean color satellite data to find the cold water, by Chromophoric dissolved organic matter (CDOM) concentration of upwelled cold water. The concentration of CDOM will change if coastal upwelling occurs. That could be observed through the ocean color sensor. 2017 summer, SST and CDOM concentrations in the in-situ and satellite data were matched up, when coastal upwelling occurred. As a result, SST and CDOM were correlated positively in coastal area, meanwhile negative correlation was found in off shore. When upwelling occurs, it is considered that high concentration of CDOM on the coast and subsurface flow to the off shore along with cold middle water, and then relatively low CDOM is supplied.