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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 6, Iss. 8 — Aug. 26, 2011

An inherent-optical-property-centered approach to correct the angular effects in water-leaving radiance

Zhong Ping Lee, Keping Du, Kenneth J. Voss, Giuseppe Zibordi, Bertrand Lubac, Robert Arnone, and Alan Weidemann  »View Author Affiliations


Applied Optics, Vol. 50, Issue 19, pp. 3155-3167 (2011)
http://dx.doi.org/10.1364/AO.50.003155


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Abstract

Remote-sensing reflectance ( R rs ), which is defined as the ratio of water-leaving radiance ( L w ) to downwelling irradiance just above the surface ( E d ( 0 + ) ), varies with both water constituents (including bottom properties of optically-shallow waters) and angular geometry. L w is commonly measured in the field or by satellite sensors at convenient angles, while E d ( 0 + ) can be measured in the field or estimated based on atmospheric properties. To isolate the variations of R rs (or L w ) resulting from a change of water constituents, the angular effects of R rs (or L w ) need to be removed. This is also a necessity for the calibration and validation of satellite ocean color measurements. To reach this objective, for optically-deep waters where bottom contribution is negligible, we present a system centered on water’s inherent optical properties (IOPs). It can be used to derive IOPs from angular R rs and offers an alternative to the system centered on the concentration of chlorophyll. This system is applicable to oceanic and coastal waters as well as to multiband and hyperspectral sensors. This IOP-centered system is applied to both numerically simulated data and in situ measurements to test and evaluate its performance. The good results obtained suggest that the system can be applied to angular R rs to retrieve IOPs and to remove the angular variation of R rs .

© 2011 Optical Society of America

OCIS Codes
(010.4450) Atmospheric and oceanic optics : Oceanic optics
(010.0280) Atmospheric and oceanic optics : Remote sensing and sensors

ToC Category:
Atmospheric and Oceanic Optics

History
Original Manuscript: January 12, 2011
Revised Manuscript: March 29, 2011
Manuscript Accepted: April 6, 2011
Published: June 22, 2011

Virtual Issues
Vol. 6, Iss. 8 Virtual Journal for Biomedical Optics

Citation
Zhong Ping Lee, Keping Du, Kenneth J. Voss, Giuseppe Zibordi, Bertrand Lubac, Robert Arnone, and Alan Weidemann, "An inherent-optical-property-centered approach to correct the angular effects in water-leaving radiance," Appl. Opt. 50, 3155-3167 (2011)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ao-50-19-3155

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