Abstract:
This study focuses on empirical closure to the estimation of sea surface salinity (SSS)
by using remote sensing of ocean colour. There are two types of important
relationship of water optical properties. The first includes the understanding of
characteristics of coloured dissolved organic matter (CDOM) along the conservative
mixing in salinity gradient. The second one is the relationship between CDOM and
water-leaving radiance (upwelling and downwelling radiance). Based on the analysis
that we have conducted using statistical analysis, the best CDOM absorption in ultra
violet wavelength such as 350nm and 380nm can be estimated using blue green ratio
as Rrs (412/547) with value ofR
2
= 0.9018. Next, the seasonal dynamic of salinity in
coastal water area is determined from satellite ocean colour. During wet and well
mixed season (Northeast Monsoon) CDOM was almost mixing up well with salinity
but acted vice versa during the dry season (Southwest Monsoon). With these results,
CDOM and salinity can be estimated by satellite ocean colour as well.
