Articles | Volume 18, issue 8
Research article
27 Apr 2018
Research article |  | 27 Apr 2018

Experimental study of H2SO4 aerosol nucleation at high ionization levels

Maja Tomicic, Martin Bødker Enghoff, and Henrik Svensmark

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Subject: Aerosols | Research Activity: Laboratory Studies | Altitude Range: Troposphere | Science Focus: Physics (physical properties and processes)
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Cited articles

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Short summary
A supernova within a distance of about 100 pc from the Earth would increase the cosmic ray flux and thereby the atmospheric ionization. We study the impact of high ion concentrations on aerosol nucleation through experiments. The measurements show that nucleation increases by up to an order of magnitude when the ionization increases from background to supernova levels under fixed concentrations of the nucleating gas. This suggests that a supernova could influence the atmospheric microphysics.
Final-revised paper