한반도 주변해역의 시공간적 흡광 변동성 및 해색 알고리즘에의 영향 분석

Abstract

Understanding for the light field of sea water is very important in Ocean Color Remote Sensing (OCRS) because it brings immense information concerning the ocean environmental properties. The signal recorded on the sensor is an energy leaving from the sea surface after incidence light has been absorbed and scattered by sea water constituents. The amount of scattering is a lot smaller than that of absorption relatively, so the influence of absorption is more critical. Many studieshave been accomplished in various seas around the world, but we found only a few investigations in optically more complex waters around the Korea.Thus, in this study we analyze the absorption coefficient of sea water constituents, phytoplankton (chlorophyll), Suspended Particulate Matter (SPM) and Dissolved Organic Matter (DOM) for the various Korean Waters. About 1300 water samples have been collected from 2003 to 2014 around the Korean waters. It should be noted that sea areas around the Korea have different characteristics separately, so we analyzed the optical properties of each separated sea waters and compared each other results. The absorption spectral shape of SPM and DOM showed exponentially decreasing pattern toward longer wavelength. Slope for the each spectrum represented the information of absorption characteristics. Using this result, we modeled the remote sensing reflectance (Rrs) spectra and simulated ocean color algorithms fg from the sea surface after incidence light has been absorbed and scattered by sea water constituents. The amount of scattering is a lot smaller than that of absorption relatively, so the influence of absorption is more critical. Many studieshave been accomplished in various seas around the world, but we found only a few investigations in optically more complex waters around the Korea.Thus, in this study we analyze the absorption coefficient of sea water constituents, phytoplankton (chlorophyll), Suspended Particulate Matter (SPM) and Dissolved Organic Matter (DOM) for the various Korean Waters. About 1300 water samples have been collected from 2003 to 2014 around the Korean waters. It should be noted that sea areas around the Korea have different characteristics separately, so we analyzed the optical properties of each separated sea waters and compared each other results. The absorption spectral shape of SPM and DOM showed exponentially decreasing pattern toward longer wavelength. Slope for the each spectrum represented the information of absorption characteristics. Using this result, we modeled the remote sensing reflectance (Rrs) spectra and simulated ocean color algorithms f