3. In-Situ Measurements to Establish the Bio-optical Model

To develop ocean color model for Case 2 waters; it is required to develop an appropriate bio-optical model in order to link the water constituent concentrations to the inherent optical properties (IOPs) and to link the IOPs to the subsurface irradiance reflectance R(0−) recorded by remote sensors. As part of this bio-optical modeling efforts, biweekly field campaigns were carried out in the Hudson/Raritan Estuary of New York-New Jersey during the course of the project (1998–2001) to obtain in-situ measurements of subsurface irradiance reflectance R(0−), together with in situ samples, that were later analyzed in the laboratory for their inherent optical properties and bio-optical modeling. The results of the field campaign with emphasis on August 1999 are presented in this chapter.