Looking at the English-language media, one might be led to think that the latest CERN experimental results show that trees alone dominate cloud formation, by supplying the necessary cloud seeding medium. Little reference is made to cosmic rays acting as the cloud formation modulator, initiating the cloud seeding process, as hypothesized by Henrik Svensmark.
Lubos Motl at the Reference Frame noted that factions of the mainstream media seem to have spun the recent CERN papers in a “bizarre” way.
German press reports cite cosmic rays
Yet looking at the reporting by German-language scientific media, one finds plenty of mention of cosmic rays as a major player in cloud formation, which has a large cooling effect on our climate, and that erosols have been grossly misweighted in the recent climate models.
Dr. Sebastian Lüning and Professor Fritz Vahrenholt here write that the latest CERN results confirm what they claimed already in their 2012 book: The Neglected Sun. Today they write:
Already one year ago, in April 2015, scientists warned that the cooling effect by aerosols had been exaggerated (see our blog article “Director of the Hamburg Max-Planck-Institute for Meteorology: Aerosols cool less than previously assumed“). This appears to have been confirmed further. Within the scope of the CLOUD Project at CERN, scientists have found more indications that the aerosol effect in the models must corrected strongly downwards.”
Scinexx.de here writes that trees earlier “provided the means for lots of clouds before industrialization” and that “man obviously has influenced cloud formation [Industrialization] less than previously thought.”
So if it wasn’t human emitted particles seeding clouds before industry; and causing cooling like in the mid 20th, what could it have been? The answer according to CERN is “organic vapours emitted by trees that produce lots of aerosol particles in the atmosphere when there’s no sulphuric acid.”
How does the cloud seeding by organic tree particles work? Through nucleation-inducing cosmic rays.