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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 41, Iss. 24 — Aug. 20, 2002
  • pp: 4937–4944

Simultaneous measurements of skin sea surface temperature and sea surface emissivity from a single thermal imagery

Kyu Yoshimori, Sumio Tamba, and Ryuzo Yokoyama  »View Author Affiliations


Applied Optics, Vol. 41, Issue 24, pp. 4937-4944 (2002)
http://dx.doi.org/10.1364/AO.41.004937


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Abstract

A novel method, to our knowledge, to measure simultaneously the thermal emissivity and skin temperature of a sea surface has been developed. The proposed method uses an infrared image that includes a sea surface and a reference object located near the surface. By combining this image with sky radiation temperature, we retrieve both skin sea surface temperature and sea surface emissivity from the single infrared image. Because the method requires no knowledge of thermal radiative properties of actual sea surfaces, it can be used even for a contaminated sea surface whose emissivity is hard to determine theoretically, e.g., oil slicks or slicks produced by biological wastes. Experimental results demonstrate that the estimated emissivity agrees with the theoretical prediction and, also, the recovered temperature distribution of skin sea surface has no appreciable high-temperature area that is due to reflection of the reference object. The method allows the acquisition of match-up data of radiometric sea surface temperatures that precisely correspond to the satellite observable data.

© 2002 Optical Society of America

OCIS Codes
(010.4450) Atmospheric and oceanic optics : Oceanic optics

History
Original Manuscript: September 24, 2001
Revised Manuscript: April 11, 2002
Published: August 20, 2002

Citation
Kyu Yoshimori, Sumio Tamba, and Ryuzo Yokoyama, "Simultaneous measurements of skin sea surface temperature and sea surface emissivity from a single thermal imagery," Appl. Opt. 41, 4937-4944 (2002)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-41-24-4937

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