Institute for Atmospheric and Climate Science


One interesting debate in the scientific community is the question if condensation freezing and immersion freezing are different mechanisms or not. To specifically study immersion freezing as it occurs in real world clouds we have developed the IMCA chamber, a vertical extension of the ZINC instrument. In this chamber, dry particles may activate as cloud droplets at warm temperatures and are subsequently cooled to the experimental temperature in ZINC where the freezing process is studied. Special care was taken in the design of this chamber that droplets do not evaporate during the cooling process. The following animation illustrates the fate of an aerosol particle during an IMCA/ZINC freezing experiment. The frozen fraction is measured at the bottom of the chamber with our IODE depolarization detector.


Wichtiger Hinweis:
Diese Website wird in älteren Versionen von Netscape ohne graphische Elemente dargestellt. Die Funktionalität der Website ist aber trotzdem gewährleistet. Wenn Sie diese Website regelmässig benutzen, empfehlen wir Ihnen, auf Ihrem Computer einen aktuellen Browser zu installieren. Weitere Informationen finden Sie auf
folgender Seite.

Important Note:
The content in this site is accessible to any browser or Internet device, however, some graphics will display correctly only in the newer versions of Netscape. To get the most out of our site we suggest you upgrade to a newer browser.
More information

© 2015 ETH Zurich | Imprint | Disclaimer | 10 February 2010