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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 11 — May. 28, 2007
  • pp: 7019–7031

Spectral variability of the particulate backscattering ratio

A. L. Whitmire, E. Boss, T. J. Cowles, and W. S. Pegau  »View Author Affiliations


Optics Express, Vol. 15, Issue 11, pp. 7019-7031 (2007)
http://dx.doi.org/10.1364/OE.15.007019


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Abstract

The spectral dependency of the particulate backscattering ratio is relevant in the fields of ocean color inversion, light field modeling, and inferring particle properties from optical measurements. Aside from theoretical predictions for spherical, homogeneous particles, we have very limited knowledge of the actual in situ spectral variability of the particulate backscattering ratio. This work presents results from five research cruises that were conducted over a three-year period. Water column profiles of physical and optical properties were conducted across diverse aquatic environments that offered a wide range of particle populations. The main objective of this research was to examine the behavior of the spectral particulate backscattering ratio in situ, both in terms of its absolute magnitude and its variability across visible wavelengths, using over nine thousand 1-meter binned data points for each of five wavelengths of the spectral particulate backscattering ratio. Our analysis reveals no spectral dependence of the particulate backscattering ratio within our measurement certainty, and a geometric mean value of 0.013 for this dataset. This is lower than the commonly used value of 0.0183 from Petzold’s integrated volume scattering data. Within the first optical depth of the water column, the mean particulate backscattering ratio was 0.010.

© 2007 Optical Society of America

OCIS Codes
(010.4450) Atmospheric and oceanic optics : Oceanic optics
(290.1350) Scattering : Backscattering
(290.5850) Scattering : Scattering, particles

ToC Category:
Atmospheric and ocean optics

History
Original Manuscript: February 16, 2007
Revised Manuscript: May 10, 2007
Manuscript Accepted: May 16, 2007
Published: May 24, 2007

Virtual Issues
Vol. 2, Iss. 6 Virtual Journal for Biomedical Optics

Citation
A. L. Whitmire, E. Boss, T. J. Cowles, and W. S. Pegau, "Spectral variability of the particulate backscattering ratio," Opt. Express 15, 7019-7031 (2007)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-11-7019


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