Applications: Atmospheric Ice Crystals
The aggregates (both external and internal) that were considered in Chap. 6 were not meant to simulate specific kinds of particles, but rather to illustrate the capabilities of the cluster model in association with the transition matrix approach in describing the optical properties of some system of interest. In the present chapter, on the contrary, we describe a specific application to the atmospheric ice crystals. The study of their scattering properties is an important topic in view of the role that they play in the meteorological phenomena and in the thermal budget of Earth. In particular, two problems are currently among the most studied ones: the contribution of the atmospheric ice crystals to the greenhouse effect, and the possibility of discriminating their shape by means of Polarimetrie radar devices.
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