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Applied Optics

Applied Optics


  • Vol. 44, Iss. 3 — Jan. 20, 2005
  • pp: 398–411

Measurements of the infrared emissivity of a wind-roughened sea surface

Jennifer A. Hanafin and Peter J. Minnett  »View Author Affiliations

Applied Optics, Vol. 44, Issue 3, pp. 398-411 (2005)

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Spectral statistical-analysis techniques were developed and applied to high-spectral-resolution infrared measurements of the sea surface. The effective incidence angle of a ship-borne instrument in typical at-sea conditions was found to introduce errors of up to 0.7 K in sea-surface temperature retrievals at a 55° view angle. The sea-surface emissivity was determined over the 8–12-μm window at view angles of 40° and 55° and at wind speeds up to 13 ms−1. The emissivity was found to increase in magnitude with increasing wind speed, rather than decrease, as predicted by widely used parameterizations. Use of these parameterizations can cause significant bias in remote sensing of sea-surface temperature in noncalm conditions.

© 2005 Optical Society of America

OCIS Codes
(010.4450) Atmospheric and oceanic optics : Oceanic optics
(010.7340) Atmospheric and oceanic optics : Water
(120.0280) Instrumentation, measurement, and metrology : Remote sensing and sensors
(120.6660) Instrumentation, measurement, and metrology : Surface measurements, roughness
(240.6690) Optics at surfaces : Surface waves

Original Manuscript: March 4, 2004
Revised Manuscript: August 20, 2004
Manuscript Accepted: September 21, 2004
Published: January 20, 2005

Jennifer A. Hanafin and Peter J. Minnett, "Measurements of the infrared emissivity of a wind-roughened sea surface," Appl. Opt. 44, 398-411 (2005)

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