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Mapping heat flux
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ABSTRACT
An infrared camera technique designed for remote sensing of air-water heat flux has been developed. The technique uses the differential absorption of water between 3.817 and 4.514 microns. This difference causes each channel's radiance to originate over a different range of depths inside the air-water interface temperature gradient. Since this gradient varies only with total heat flux, the radiance difference between channels caused by the gradient also varies with heat flux. Laboratory experiments showed that this radiance difference correlates well with heat flux measured ...
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