Physics
Scientific paper
Apr 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983natur.302..511h&link_type=abstract
Nature (ISSN 0028-0836), vol. 302, April 7, 1983, p. 511-514. NASA-NSF-Navy-supported research.
Physics
12
Condensation Nuclei, Radiation Effects, Solar Cosmic Rays, Solar Terrestrial Interactions, Stratosphere, Ion Production Rates, Mixing, Negative Ions, Sulfuric Acid, Vertical Distribution
Scientific paper
Two recent observations have provided the basis for study of a relationship between solar activity and the formation of small particles in the earth's atmosphere; the discovery of annual increases of condensation nuclei (CN) at 30 km and the detection of sulfuric acid molecules in large negative ion clusters in the 25-35-km altitude region. These observations have led to formulation and testing of a model wherein CN are formed in a 'polar cloud chamber' supersaturated with sulfuric acid vapor and triggered by ionization associated with solar flare cosmic radiation. It is concluded that such a model provides a potential explanation of the observations.
Hofmann David J.
Rosen James M.
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