October 10, 2019 at 13:00
Nordenskiöldsalen, Geovetenskapens Hus, Stockholm University

Aerosol particles in the atmosphere are important because of their impact on climate. One of these effects relates to the fact that cloud droplets form on aerosol particles (so-called cloud condensation nuclei, CCN), and that an enhanced number concentration of CCN results in an increased reflection of the formed clouds, exerting a cooling on our planet. About 50% of the particles are not directly emitted as particles but are formed in the atmosphere from gaseous precursors. According to the Svensmark hypothesis this process is most influenced by the Sun’s interaction with galactic cosmic rays and therefore the latter is responsible for the major part of today’s warming. This presentation will give insight into the CLOUD experiment at CERN, which was set up to test the Svensmark hypothesis.

Contact information

Visiting addresses:

Geovetenskapens Hus,
Svante Arrhenius väg 8, Stockholm

Arrheniuslaboratoriet, Svante Arrhenius väg 16, Stockholm (Unit for Toxicological Chemistry)

Mailing address:
Department of Environmental Science
Stockholm University
106 91 Stockholm

Press enquiries should be directed to:

Stella Papadopoulou
Science Communicator
Phone +46 (0)8 674 70 11