Clouds at — 30 or — 35ºF are often entirely liquid because they do not contain any efficient ice -
nucleating particles.
Not exact matches
At this temperature and density elements can
nucleate and form solid
particles.
Cziczo argues that lead «supercharges» ice -
nucleating dust
particles in the atmosphere.
At supersaturated atmospheric conditions, bare and coated
particles had a nearly equivalent predisposition for
nucleating ice.
«We found that exposing
particles to sunlight makes the
particles increasingly more oxidized and acidic, which in turn makes it easier for such
particles to
nucleate water and make cloud droplets,» said Professor Sergey Nizkorodov, a physical chemist at UCI who led the study.
The results showed lead in about half of the
particles that
nucleate clouds.
And this is why CERN is necessary - because it carries a bit more weight in scientific matters - and they are working to understand the unknown mechanisms of how 10 micron
particles nucleate from smaller
particles (and
nucleate from smaller
particles they obviously do, how much cosmic rays affect that is unknown).