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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 41, Iss. 35 — Dec. 10, 2002
  • pp: 7369–7383

Observations of reflectance distribution around sunglint from a coastal ocean platform

Wenying Su, Thomas P. Charlock, and Ken Rutledge  »View Author Affiliations


Applied Optics, Vol. 41, Issue 35, pp. 7369-7383 (2002)
http://dx.doi.org/10.1364/AO.41.007369


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Abstract

A scanning spectral photometer is deployed on a rigid coastal ocean platform to measure upwelling solar radiances from the sea surface at nine elevation angles spanning 150° of azimuth. Measured radiance distributions at 500 nm wavelength have been compared with traditional model simulations employing the Cox and Munk distribution of wave slopes. The model captures the general features of the observed angular reflectance distributions, but: (a) the observed peak value of sunglint near the specular direction is larger than simulated, except for a very calm sea; the model-measurement differences increase with wind speed and are largest for low solar elevation; (b) the observed sunglint is wider than simulated. In contrast to some previous studies, our results do not show a clear dependence of the mean square sea-surface slope on stability (air-sea temperature difference).

© 2002 Optical Society of America

OCIS Codes
(010.4450) Atmospheric and oceanic optics : Oceanic optics
(030.5620) Coherence and statistical optics : Radiative transfer
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation

History
Original Manuscript: May 31, 2002
Revised Manuscript: September 9, 2002
Published: December 10, 2002

Citation
Wenying Su, Thomas P. Charlock, and Ken Rutledge, "Observations of reflectance distribution around sunglint from a coastal ocean platform," Appl. Opt. 41, 7369-7383 (2002)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-41-35-7369

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