printlogo
http://www.ethz.ch/index_EN
Institute for Atmospheric and Climate Science
 
print
  

Lab and field studies of the ability of aerosols to act as ice nuclei (IN)

The importance of ice crystals in clouds for our climate is manifold: Their presence, number and shape influences the optical properties of clouds, the formation of precipitation and their lifetime. All of these aspects have an impact on the radiation balance and therefore on climate.

In our ice nucleation lab, we are focussing on the first step in this chain, the formation or nucleation of ice and the influencing factors which are: The number, size, and chemical composition of aerosol particles which act as „catalysts“ for the formation of ice and the environmental conditions like temperature and relative humidity.

One aspect is further complicating the study of ice nucleation and its consequences for
clouds: The fact that there are several modes or mechanisms, by which ice can form:

One of the goals of our work is to study all of these nucleation/freezing modes experimentally to learn more about their relative importance in real world clouds. To achieve this, we have developed several instruments to study these processes individually:

 

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

© 2014 ETH Zurich | Imprint | Disclaimer | 10 February 2010
top