Effect of the Observation Length on the Two-Dimensional Shadowing Function of the Sea Surface: Application on Infrared 3–13-μm Emissivity
Applied Optics, Vol. 39, Issue 20, pp. 3433-3442 (2000)
http://dx.doi.org/10.1364/AO.39.003433
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Abstract
An analytical approach of the two-dimensional emissivity of a rough sea surface in the infrared band is presented. The emissivity characterizes the intrinsic radiation of the sea surface. Because the temperature measured by the infrared camera depends on the emissivity, the emissivity is a relevant parameter for retrieving the sea-surface temperature from remotely sensed radiometric measurements, such as from satellites. This theory is developed from the first-order geometrical-optics approximation and is based on recent research. The typical approach assumes that the slope in the upwind direction is greater than the slope in the crosswind direction, involving the use of a one-dimensional shadowing function with the observed surface assumed to be infinite. We introduce the two-dimensional shadowing function and the surface observation length parameters that are included in the modeling of the two-dimensional emissivity.
© 2000 Optical Society of America
[Optical Society of America ]
OCIS Codes
(000.5490) General : Probability theory, stochastic processes, and statistics
(010.4450) Atmospheric and oceanic optics : Oceanic optics
(030.6600) Coherence and statistical optics : Statistical optics
(080.2720) Geometric optics : Mathematical methods (general)
Citation
Christophe Bourlier, Joseph Saillard, and Gérard Berginc, "Effect of the Observation Length on the Two-Dimensional Shadowing Function of the Sea Surface: Application on Infrared 3–13-μm Emissivity," Appl. Opt. 39, 3433-3442 (2000)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-39-20-3433
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