Absorption modeling in case II waters: the need to distinguish colored dissolved organic matter from nonchlorophyllous particulates

Mark Dowell; Jean-Francois Berthon; Nicolas Hoepffner; Stefania Grossi

doi:10.1117/12.266473

6 February 1997 Absorption modeling in case II waters: the need to distinguish colored dissolved organic matter from nonchlorophyllous particulates

Mark Dowell, Jean-Francois Berthon, Nicolas Hoepffner, Stefania Grossi

Author Affiliations +

Proceedings Volume 2963, Ocean Optics XIII; (1997) https://doi.org/10.1117/12.266473
Event: Ocean Optics XIII, 1996, Halifax, Nova Scotia, Canada

Abstract

The presented study examines, for substantial datasets in different Case II waters, the variability of the spectral absorption of Non-Chlorophyllous Particles (NCP) and Colored Dissolved Organic Matter (CDOM). The investigation has considered the validity of the currently proposed modeling of the absorption of these tow components as a single variable, in applications to Case II water environments. In order to encompass a broad range of environmental situations in the comparison of NCP and CDOM absorption spectra, two very different sites were selected. The locations investigated were the Southern Baltic Proper and a site in the Northern Adriatic close to the Italian coast. These two regions differ both in their basic oceanographic properties and int heir relative proportions of both space and time, combining a series of seasonal oceanographic campaigns in the Baltic with a complete annual time series of monthly measurements at a fixed point in the Adriatic. The analysis has shown that, in the selected European Case II waters, the observed variability of the spectral absorption of NCP and CDOM, both with respect to each other as well as to the total absorption, are independent. It is therefore suggested that, in the frame of Reflectance modeling in Case II waters, attention must be placed on accounting for NCP an CDOM individually when defining the absorption segment.

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Mark Dowell, Jean-Francois Berthon, Nicolas Hoepffner, and Stefania Grossi "Absorption modeling in case II waters: the need to distinguish colored dissolved organic matter from nonchlorophyllous particulates", Proc. SPIE 2963, Ocean Optics XIII, (6 February 1997); https://doi.org/10.1117/12.266473

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