Accession Number:

ADA433619

Title:

Breaking Waves and Microwave Polarimetric Emissivities: Final Report

Descriptive Note:

Final rept. 1 Dec 1999-30 Sep 2004

Corporate Author:

WASHINGTON UNIV SEATTLE APPLIED PHYSICS LAB

Personal Author(s):

Report Date:

2005-04-11

Pagination or Media Count:

6.0

Abstract:

Several field experiments designed to provide a detailed look at the physical processes affecting the microwave radiometric signal from breaking waves and foam patches were conducted. Significant results included 1 Showed that the microwave emissivity of a foam covered water surface does not behave as a blackbody in the microwave region. 2 Provided further evidence that fraction area whitecap coverage can be estimated from microwave brightness temperature. 3 Provided new data on the relationship between sea surface microwave emissivity and wind stress, atmospheric stability, and sea surface wave properties. 4 Showed that the fractional area foam coverage of a breaking wave, and the change in overall scene microwave brightness temperature it induces, depends on the azimuthal look angle as measured with respect to the direction of wave propagation.

Subject Categories:

  • Thermodynamics
  • Radio Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE