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Ocean optics phase-function inverse equations.

N J McCormick1

  • 1Department of Mechanical Engineering, University of Washington, Seattle 98195-2600, USA. mccor@u.washington.edu

Applied Optics
|September 6, 2002
PubMed
Summary
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New equations determine Legendre polynomial coefficients for phase functions using radiance integrals. This method applies to measurements in water or at the surface, aiding optical property analysis.

Area of Science:

  • Optics
  • Remote Sensing
  • Atmospheric Science

Background:

  • The phase function is crucial for understanding light scattering in natural waters and the atmosphere.
  • Accurate determination of the phase function is essential for radiative transfer modeling.
  • Existing methods for phase function retrieval can be complex or require specific measurement geometries.

Purpose of the Study:

  • To develop a robust method for calculating Legendre polynomial expansion coefficients of the phase function.
  • To provide equations applicable to radiance measurements obtained in-situ (in water) or remotely (at the surface).

Main Methods:

  • Derivation of analytical equations linking radiance integrals to Legendre polynomial coefficients.
  • Utilizing angular and angular-spatial integration techniques.

Related Experiment Videos

  • Applying the method to radiance data acquired under various conditions.

    • Main Results:

    • Successfully derived equations for determining phase function coefficients.
    • Demonstrated the applicability of the method to both in-water and surface-based radiance measurements.
    • The results enable more accurate characterization of optical properties.

    Conclusions:

    • The derived equations offer a practical approach for retrieving phase function coefficients.
    • This work advances the understanding of light propagation and scattering in aquatic and atmospheric environments.
    • The method provides a valuable tool for optical remote sensing and radiative transfer studies.