The Black Sea IOPs based on SeaWiFS data

In this study, a regional algorithm for retrieving Inherent Optical Properties ( IOPs ) has been developed for the Black Sea using remote sensing reflectance at five wavelengths in the visible spectral range corresponding to the Sea-viewing Wide Field of View Sensor ( SeaWiFS ). The model retrieves a spectral signature of particle backscattering coefficient at 555 nm, b bp (λ), and its spectral slope, n p , total absorption coefficient of colored detrital matter (sum of colored dissolved matter and non-algal particles, CDM ) at 490 nm, a CDM (λ), spectral slope of CDM absorption coefficient, S , and chlorophyll a concentration, C a . These satellite derived set of IOPs and bio-optical properties measured in situ in the western open Black Sea within period 1998-1999 have been analyzed. The result reveals four specific cases corresponding to 1) variation of spectral slope of CDM absorption coefficient, 2) coccolithophores blooms, 3) domination of micro-celled phytoplankton (diatoms and/or dinoflagellates) and 4) presences of the picoplankton in phytoplankton community. Examples of the spatial distribution and seasonal variability of the retrieved parameters in half-monthly composite maps are presented. A complete set of these maps for SeaWiFS lifetime is available on http://blackseacolor.com/.