Use pre-calculated ice cloud optical properties including full phase matrices. This option has newly been implemented and is not yet well validated. Please check your results carefully!! The parameterization is currently only available for the spectral region from 0.2 to 5 micrometers. The single scattering properties have been been generated by Hong Gang using the models by (). The parameterization is based on simple gamma distributions

$\displaystyle n(r) = n_0 r^{\alpha} \exp\left(-\frac{(\alpha+3)r}{r_e}\right),$ (1)

where $ n_0$ is found by normalization and $ \alpha$ is set to 1. In case of spherical particles the parameter $ r_e$ would be the effective radius. For aspherical particles, the parameter $ r_e$ is found iteratively so that the size distribution yields the required effective radius. The parameterization is availabe for the following habits: solid-column, hollow-column, rough-aggregate, rosette-6, plate, and droxtal. The default habit is solid-column. The habit can be specified using the option ic_habit.



Jonas Kylling 2010-03-06