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Related Experiment Videos

Phase function effects on oceanic light fields.

Curtis D Mobley1, Lydia K Sundman, Emmanuel Boss

  • 1Sequoia Scientific, Incorporated, Redmond, Washington 98052-3562, USA. mobley@sequoiasci.com

Applied Optics
|March 20, 2002
PubMed
Summary
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Accurate underwater optical models depend on scattering phase functions. Our algorithm generates precise phase functions, crucial for matching simulation data with real-world measurements.

Area of Science:

  • Ocean optics
  • Radiative transfer theory
  • Computational modeling

Background:

  • Underwater optical properties like radiance, irradiance, and reflectance are vital for remote sensing and underwater visibility.
  • The scattering phase function significantly influences these properties, especially at larger angles.

Purpose of the Study:

  • To investigate the sensitivity of underwater optical simulations to the scattering phase function.
  • To develop a method for generating accurate, depth- and wavelength-dependent scattering phase functions.
  • To assess the importance of phase function shape and backscatter fraction for model-data closure.

Main Methods:

  • Numerical simulations of underwater radiative transfer.
  • Development of an algorithm to generate Fournier-Forand phase functions with adjustable backscatter fractions.

Related Experiment Videos

  • Modeling of extensive datasets including inherent optical properties and radiometric variables.

    • Main Results:

    • Underwater optical properties are sensitive to scattering phase function shape at intermediate and large angles.
    • Precise backscatter fraction is critical for achieving model-data closure within 10% error.
    • The developed algorithm successfully generates phase functions tailored to specific backscatter fractions.

    Conclusions:

    • Accurate scattering phase functions, particularly their backscatter fraction, are essential for reliable underwater optical modeling.
    • The proposed algorithm provides a robust tool for generating necessary phase functions, improving model-data agreement.