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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 41, Iss. 30 — Oct. 20, 2002
  • pp: 6289–6306

Bidirectional reflectance of oceanic waters: accounting for Raman emission and varying particle scattering phase function

André Morel, David Antoine, and Bernard Gentili  »View Author Affiliations


Applied Optics, Vol. 41, Issue 30, pp. 6289-6306 (2002)
http://dx.doi.org/10.1364/AO.41.006289


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Abstract

The bidirectionality of the upward radiance field in oceanic case 1 waters has been reinvestigated by incorporation of revised parameterizations of inherent optical properties as a function of the chlorophyll concentration (Chl), considering Raman scattering and making the particle phase function shape (β̃ p ) continuously varying along with the Chl. Internal consistency is thus reached, as the decrease in backscattering probability (for increasing Chl) translates into a correlative change in β̃ p . The single particle phase function (previously used) precluded a realistic assessment of bidirectionality for waters with Chl > 1 mg m-3. This limitation is now removed. For low Chl, Raman emissions significantly affect the radiance field. For moderate Chl (0.1–1 mg m-3), new and previous bidirectional parameters remain close. The ocean reflectance anisotropy has implications in ocean color remote-sensing problems, in derivation of coherent water-leaving radiances, in associated calibration–validation activities, and in the merging of data obtained under various geometrical configurations.

© 2002 Optical Society of America

OCIS Codes
(010.4450) Atmospheric and oceanic optics : Oceanic optics
(290.4210) Scattering : Multiple scattering
(290.5840) Scattering : Scattering, molecules
(290.5850) Scattering : Scattering, particles
(290.5860) Scattering : Scattering, Raman

History
Original Manuscript: February 25, 2002
Revised Manuscript: July 5, 2002
Published: October 20, 2002

Citation
André Morel, David Antoine, and Bernard Gentili, "Bidirectional reflectance of oceanic waters: accounting for Raman emission and varying particle scattering phase function," Appl. Opt. 41, 6289-6306 (2002)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-41-30-6289


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