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Applied Optics

Applied Optics


  • Vol. 38, Iss. 15 — May. 20, 1999
  • pp: 3166–3174

Contribution of Raman scattering to water-leaving radiance: a reexamination

Howard R. Gordon  »View Author Affiliations

Applied Optics, Vol. 38, Issue 15, pp. 3166-3174 (1999)

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We have reexamined the contribution of Raman scattering to the water-leaving radiance in case 1 waters by carrying out radiative transfer simulations that combine the latest reported measurements of the absorption coefficient of pure water with direct measurements of the spectral variation of the Raman-scattering coefficient. The resulting contribution of Raman scattering is then compared with experimental measurements of the water-leaving radiance, and the fractional contribution of radiance produced by Raman scattering to the total radiance measured at a given wavelength is determined. The results show that (1) the contribution of Raman scattering to the water-leaving radiance in an ocean of pure seawater is as much as 50–100% larger than earlier predictions, and (2) the Raman contribution does not decay as rapidly with increasing concentrations of chlorophyllouslike pigments C as predicted earlier. In fact, the Raman fraction for C ≲ 1 mg/m3 is approximately ≳8% at wavelengths of interest in ocean color remote sensing and therefore cannot be ignored in ocean color modeling.

© 1999 Optical Society of America

OCIS Codes
(010.4450) Atmospheric and oceanic optics : Oceanic optics
(010.7340) Atmospheric and oceanic optics : Water
(280.0280) Remote sensing and sensors : Remote sensing and sensors
(290.5860) Scattering : Scattering, Raman

Original Manuscript: October 15, 1998
Revised Manuscript: January 27, 1999
Published: May 20, 1999

Howard R. Gordon, "Contribution of Raman scattering to water-leaving radiance: a reexamination," Appl. Opt. 38, 3166-3174 (1999)

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