Institut für Meteorologie und Klimaforschung


Underappreciated atmospheric organic ice nucleating particles

Dienstag, 04. Februar 2020, 15:00-16:00
KIT, Campus Nord, Gebäude 435, Seminarraum 2.05

The sources, abundance and nature of emissions of ice nucleating particles (INPs) affect aerosol-cloud interactions, precipitation, and climate (via cloud phase and lifetime influences) in ways that are not well characterized. While past research has emphasized the global relevance of mineral dusts and other inorganic particles as INPs, we find that INPs emitted from non-desert soils, within marine emissions (via sea spray), and from biomass burning are dominated by unresolved organic ice nucleating materials. While some of these INP sources are less efficient on a number or surface area basis compared to mineral dusts, they can dominate over large regions. Only marine INP sources have been integrated in any manner into cloud and climate modeling applications. I will review past studies, and summarize two recent campaigns that included measurements of INPs over remote oceans and in biomass burning plumes.

Diese Veranstaltung ist Teil der Reihe Karlsruher Meteorologisches Kolloquium
Dr. Paul DeMott

Colorado State University
Institut für Meteorologie und Klimaforschung - Atmosphärische Umweltforschung (IMK-IFU)
Karlsruher Institut für Technologie (KIT)
Kreuzeckbahnstraße 19
82467 Garmisch-Partenkirchen
E-Mail:hape schmidViv0∂imk kit edu