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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 19 — Sep. 15, 2008
  • pp: 14683–14688

Ocean color remote sensing: choosing the correct depth weighting function.

Jacek Piskozub, Tomasz Neumann, and Ludomir Woźniak  »View Author Affiliations

Optics Express, Vol. 16, Issue 19, pp. 14683-14688 (2008)

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Values of reflectance and remote sensing reflectance are proportional to the ratio of sea water backscattering to absorption. However, in vertically non-homogeneous waters, this fraction needs to be depth weighted. The usual practice uses normalized vertical transmittance profiles as the weighting function. Recently, it was shown that the correct approach is to use, instead of transmittance, its first derivative. We used both approaches to calculate spectral reflectance and remote sensing reflectance over a submerged bubble cloud and chlorophyll rich layer and compared the results with a radiative transfer Monte Carlo code. We also compared several methods of approximating diffuse attenuation (not measured directly) to estimate the effect on calculating reflectance. Our results show that the traditional method of IOP weighting is inadequate in the presence of bubble clouds and/or chlorophyll rich layers. This is relevant for both “ground truth” studies and inverse methods of remote sensing (including lidar ones) for vertically inhomogeneous ocean sea waters.

© 2008 Optical Society of America

OCIS Codes
(010.4450) Atmospheric and oceanic optics : Oceanic optics
(120.0280) Instrumentation, measurement, and metrology : Remote sensing and sensors
(010.4455) Atmospheric and oceanic optics : Oceanic propagation
(010.1350) Atmospheric and oceanic optics : Backscattering
(010.5620) Atmospheric and oceanic optics : Radiative transfer

ToC Category:
Atmospheric and oceanic optics

Original Manuscript: July 7, 2008
Revised Manuscript: August 12, 2008
Manuscript Accepted: August 29, 2008
Published: September 3, 2008

Virtual Issues
Vol. 3, Iss. 11 Virtual Journal for Biomedical Optics

Jacek Piskozub, Tomasz Neumann, and Ludomir Wozniak, "Ocean color remote sensing: choosing the correct depth weighting function," Opt. Express 16, 14683-14688 (2008)

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