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Proceedings Paper

Angular Width Of The Downwelling Solar Radiance Profile As A Function Of Depth
Author(s): Michael Browne; Roy A. Axford
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Paper Abstract

The results are presented for an experiment in which the full angular width of the solar radiance distribution was measured at varying depths using a Silicon Intensified Target (SIT) underwater camera. The data show that for shallow depths, the width of the solar radiance distribution is strongly affected by the optical thickness of the cloud cover. In this experiment, under clear skies, as the depth increased from 27 to 677 ft, the angular width, full width at half maximum (FWHM), went from 35° to 59°. For very cloudy conditions, the solar radiance appears to be diffuse with an angular width of 62° FWHM even before striking the ocean's surface, and little change in angular width is observed from the surface to maximum depth.

Paper Details

Date Published: 7 August 1986
PDF: 4 pages
Proc. SPIE 0637, Ocean Optics VIII, (7 August 1986); doi: 10.1117/12.964219
Show Author Affiliations
Michael Browne, University of Arizona (United States)
Roy A. Axford, Naval Ocean Systems Center (United States)


Published in SPIE Proceedings Vol. 0637:
Ocean Optics VIII
Marvin A. Blizard, Editor(s)

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