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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 18 — Aug. 31, 2009
  • pp: 16192–16208

Spectra of particulate backscattering in natural waters.

Howard R. Gordon, Marlon R. Lewis, Scott D. McLean, Michael S. Twardowski, Scott A. Freeman, Kenneth J. Voss, and G. Chris Boynton  »View Author Affiliations

Optics Express, Vol. 17, Issue 18, pp. 16192-16208 (2009)

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Hyperspectral profiles of downwelling irradiance and upwelling radiance in natural waters (oligotrophic and mesotrophic) are combined with inverse radiative transfer to obtain high resolution spectra of the absorption coefficient (a) and the backscattering coefficient (bb ) of the water and its constituents. The absorption coefficient at the mesotrophic station clearly shows spectral absorption features attributable to several phytoplankton pigments (Chlorophyll a, b, c, and Carotenoids). The backscattering shows only weak spectral features and can be well represented by a power-law variation with wavelength (λ): bb ~λ n , where n is a constant between 0.4 and 1.0. However, the weak spectral features in bb suggest that it is depressed in spectral regions of strong particle absorption. The applicability of the present inverse radiative transfer algorithm, which omits the influence of Raman scattering, is limited to λ < 490 nm in oligotrophic waters and λ < 575 nm in mesotrophic waters.

© 2009 OSA

OCIS Codes
(010.4450) Atmospheric and oceanic optics : Oceanic optics
(280.4991) Remote sensing and sensors : Passive remote sensing

ToC Category:
Atmospheric and Oceanic Optics

Original Manuscript: June 24, 2009
Revised Manuscript: August 14, 2009
Manuscript Accepted: August 21, 2009
Published: August 27, 2009

Virtual Issues
Vol. 4, Iss. 10 Virtual Journal for Biomedical Optics

Howard R. Gordon, Marlon R. Lewis, Scott D. McLean, Michael S. Twardowski, Scott A. Freeman, Kenneth J. Voss, and G. Chris Boynton, "Spectra of particulate backscattering in natural waters," Opt. Express 17, 16192-16208 (2009)

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