Cirrus clouds are an important factor in the Earth’s climate system. We measured chemical and physical properties of the aerosols on which cirrus ice crystals formed in situ and in real time using a laser ablation single particle mass spectrometry technique deployed aboard a high altitude NASA research aircraft. Measurements from a number of locations spanning from the mid-latitudes through the tropics and during multiple season indicate that in most cases aerosol composition had a significant impact on the nucleation of the ice phase. Mineral dust and some metallic particles were highly enhanced in the ice phase when compared to their abundance outside of cloud. Particles such as soot and biological material, previously suggested as ice nuclei, were not found either due to a poor crystalline match or low abundance.

Diese Veranstaltung ist Teil der Reihe Aerosolphysikalisches Seminar

Referent/in
Daniel James Cziczo

MIT
Department of Earth, Atmospheric and Planetary Sciences

Veranstalter
Institut für Meteorologie und Klimaforschung
Karlsruher Institut für Technologie (KIT)
Hermann von Helmholtz Platz 1
76344 Eggenstein-Leopoldshafen
Tel: 0721-608-0
E-Mail: sekretariat ∂does-not-exist.imk-asf kit edu

Zielgruppe
Wissenschaftliche Mitarbeitende