München 2004 – wissenschaftliches Programm

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UP: Umweltphysik

UP 21: Aerosol und Messtechnik

UP 21.8: Fachvortrag

Dienstag, 23. März 2004, 18:15–18:30, HS 221

Aerosol simulation in radiative transfer modelling — •Sanghavi Suniti, Christoph von Friedeburg, Thomas Wagner, and Ulrich Platt — Institut fuer Umweltphysik, Heidelberg

Aerosols, through their different direct and indirect effects, play an important role in atmospheric radiative transfer. They display a marked degree of inhomogeneity in their occurence and properties, making it important to classify them in detail. In this talk, we present the different scenarios chosen to represent various aerosol species occuring in the atmosphere within the framework of a three dimensional Monte Carlo radiative transfer model. We discuss the sensitivity of the modelled retrievals on the size distribution and vertical profile of the aerosols and on their single scattering properties. The single scattering properties of a given species are calculated using the Mie theory whose approximation to nonspherical particles is discussed. Future possibilies to expand the existing model to include nonspherical particles, to simulate 3D clouds, etc. are investigated.