Berlin 2014 – wissenschaftliches Programm

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UP: Fachverband Umweltphysik

UP 13: Klimamodellierung

UP 13.4: Vortrag

Donnerstag, 20. März 2014, 14:15–14:30, MAG 100

The role of different modes of ice initiation for rain formation — •Thibault Hiron^1,2, Andrea Flossmann¹, and Marie Monier¹ — ¹LaMP, Université Blaise Pascal/CNRS, Clermont-Ferrand, France — ²IMK-AAF, Karlsruhe Institut für Technologie, Karlsruhe, Germany

In mid-latitudes most clouds develop rain while passing through the ice phase.

In order to initiate the ice phase at temperatures above -35^∘C, particular aerosol particles are necessary, called IN (ice nuclei). Only little is known regarding the required properties of an aerosol particle to act as IN at a certain temperature region. Furthermore, it is uncertain whether they will act through condensation freezing, immersion freezing or contact freezing.

The detailed bin-resolved microphysics model DESCAM has been used to study the role of the different modes of ice initiation on rain formation using data from the literature, coupled with the sensitivity tests.