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W. Weber Strong signature of the active Sun in 100 years of terrestrial insolation data Annalen der Physik 522

Article first published online: 21 MAY 2010 | DOI: 10.1002/andp.201000019

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Terrestrial solar irradiance data of the Smithsonian Astrophysical Observatory from 1905 to 1954 and of Mauna Loa Observatory from 1958 to 2008 are analyzed. The analysis shows that, with changing solar activity, the atmosphere modifies the solar irradiance on the percentage level, in all likelihood via cosmic ray intensity variations produced by the active sun. The analysis strongly suggests that cosmic rays cause a large part of the atmospheric aerosols. These aerosols show specific absorption and scattering properties due to an inner structure of hydrated ionic centers, most probably of O2- and O2+ produced by the cosmic rays.

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