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

Jennifer A. Hanafin, Peter J. Minnett

Research output: Contribution to journalArticle

46 Scopus citations

Abstract

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.

Original languageEnglish (US)
Pages (from-to)398-411
Number of pages14
JournalApplied Optics
Volume44
Issue number3
DOIs
StatePublished - Jan 20 2005

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering

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