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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 2 — Jan. 16, 2012
  • pp: 1070–1083

Theoretical analysis of ocean color radiances anomalies and implications for phytoplankton groups detection in case 1 waters

S. Alvain, H. Loisel, and D. Dessailly  »View Author Affiliations

Optics Express, Vol. 20, Issue 2, pp. 1070-1083 (2012)

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Past years have seen the development of different approaches to detect phytoplankton groups from space. One of these methods, the PHYSAT one, is empirically based on reflectance anomalies. Despite observations in good agreement with in situ measurements, the underlying theoretical explanation of the method is still missing and needed by the ocean color community as it prevents improvements of the methods and characterization of uncertainties on the inversed products. In this study, radiative transfer simulations are used in addition to in situ measurements to understand the organization of the signals used in PHYSAT. Sensitivity analyses are performed to assess the impact of the variability of the following three parameters on the reflectance anomalies: specific phytoplankton absorption, colored dissolved organic matter absorption, and particles backscattering. While the later parameter explains the largest part of the anomalies variability, results show that each group is generally associated with a specific bio-optical environment which should be considered to improve methods of phytoplankton groups detection.

© 2012 OSA

OCIS Codes
(010.4450) Atmospheric and oceanic optics : Oceanic optics
(010.1030) Atmospheric and oceanic optics : Absorption
(010.1350) Atmospheric and oceanic optics : Backscattering
(010.1690) Atmospheric and oceanic optics : Color

ToC Category:
Atmospheric and Oceanic Optics

Original Manuscript: September 6, 2011
Revised Manuscript: November 6, 2011
Manuscript Accepted: November 10, 2011
Published: January 4, 2012

Virtual Issues
Vol. 7, Iss. 3 Virtual Journal for Biomedical Optics

S. Alvain, H. Loisel, and D. Dessailly, "Theoretical analysis of ocean color radiances anomalies and implications for phytoplankton groups detection in case 1 waters," Opt. Express 20, 1070-1083 (2012)

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