Application of a 3D delta-Eddington radiative transfer model to calculation of solar heating and photolysis rates in a stratocumulus cloud layer

Victor V. Filyushkin; Douglas K. Lilly

doi:10.1117/12.163537

2 November 1993 Application of a 3D Delta-Eddington radiative transfer model to calculation of solar heating and photolysis rates in a stratocumulus cloud layer

Victor V. Filyushkin, Douglas K. Lilly

Author Affiliations +

Proceedings Volume 2049, Atmospheric Radiation; (1993) https://doi.org/10.1117/12.163537
Event: High Latitude Optics, 1993, Tromso, Norway

Abstract

A number of problems of aerosol/cloud and radiation/cloud interactions, as well as cloud chemistry, related to climate change study, which could be addressed with 3-D cloud structure models which incorporate a detailed `inventory' of physical processes. Also, cloud remote sensing problems can be sensitive to the 3-D structure of clouds. Those problems motivate us to develop a 3-D Large Eddy Simulation model with explicit description of cloud microphysical processes. The model output contains fields of aerosol and drop size distributions, among other output parameters. Some results of recent model runs are presented. In order to study a 3-D radiance response of the system we derive a `two-stream' approximation of radiative transfer for a 3-D inhomogeneous medium based on a 3-D delta- Eddington method. The basic equations of the method are derived and the solution method is outlined. Relevance of the model to investigation of arctic stratus layers is discussed.

Citation Download Citation

Victor V. Filyushkin and Douglas K. Lilly "Application of a 3D Delta-Eddington radiative transfer model to calculation of solar heating and photolysis rates in a stratocumulus cloud layer", Proc. SPIE 2049, Atmospheric Radiation, (2 November 1993); https://doi.org/10.1117/12.163537

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