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Related Experiment Video

Updated: Jun 15, 2026

Scattering And Absorption of Light in Planetary Regoliths

Scattering And Absorption of Light in Planetary Regoliths

Published on: July 1, 2019

Single and multiple scattering contributions to circumsolar radiation.

M A Box, A Deepak

|March 9, 2010

Summary

Multiple scattering significantly impacts circumsolar radiation, especially in forward directions at optical depths around 0.4. However, almucantar radiance shape up to 10 degrees shows less sensitivity to these multiple scattering effects.

Area of Science:

Atmospheric optics
Radiative transfer theory

Background:

Circumsolar radiation is crucial for understanding solar energy transfer.
Accurate modeling of scattering is essential for atmospheric and climate studies.

Purpose of the Study:

To compute single and multiple scattering contributions to circumsolar radiation.
To analyze the sensitivity of angular radiance distributions to multiple scattering.

Main Methods:

Solving the radiative transfer equation using a Gauss-Seidel iterative method.
Analyzing radiation patterns along the almucantar and sun vertical.

Main Results:

Multiple scattering contributions are significant for optical depths near 0.4 in the forward direction.

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Almucantar radiance shape up to 10 degrees is relatively insensitive to multiple scattering.

Results were validated against an existing radiative transfer code.

Conclusions:

Multiple scattering plays a key role in forward-directed circumsolar radiation.
The angular distribution of almucantar radiance is robust to multiple scattering effects within a certain range.