Radiance of Sea and Sky in the Infrared Window 800–1200 cm^−1
1968; Optica Publishing Group; Volume: 58; Issue: 5 Linguagem: Inglês
10.1364/josa.58.000645
ISSN2375-1037
Autores Tópico(s)Atmospheric and Environmental Gas Dynamics
ResumoExpressions are obtained for the infrared radiance of a rough ocean surface by a method closely following that of Cox and Munk. For normal viewing, average radiance is found to be practically independent of roughness, but for oblique viewing blackness increases with roughness. Shadowing is treated in a simple approximate manner and estimates of surface radiance are made for glancing angles of viewing: an infrared horizon is predicted. The theoretical results, which are closely substantiated by observations, reveal the dish-shaped character of the ocean and indeed of any rough surface.
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