## Abstract

By means of radiative transfer simulations we developed a model for
estimating the absorption *a*, the scattering *b*,
and the backscattering *b*
_{b} coefficients in the
upper ocean from irradiance reflectance just beneath the sea surface,
*R*(0^{-}), and the average attenuation
coefficient for downwelling irradiance,
〈*K*
_{d}〉_{1}, between the surface and
the first attenuation depth. The model accounts for Raman
scattering by water, and it does not require any assumption about the
spectral shapes of *a*, *b*, and
*b*
_{b}. The best estimations are obtained for
*a* and *b*
_{b} in the blue and green
spectral regions, where errors of a few percent to <10% are expected
over a broad range of chlorophyll concentration in water. The model
is useful for satellite ocean color applications because the model
input, *R*(0^{-}) and
〈*K*
_{d}〉_{1}, can be retrieved from
remote sensing and the model output, *a* and
*b*
_{b}, is the major determinant of remote-sensing
reflectance.

© 2000 Optical Society of America

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