On possible drivers of Sun-induced climate changes

Details On possible drivers of Sun-induced climate changes On possible drivers of Sun-induced climate changes

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006jastp..68.2053d&link_type=abstract

Journal of Atmospheric and Solar-Terrestrial Physics, Volume 68, Issue 18, p. 2053-2060.

Physics

19

Scientific paper

We tested the validity of two current hypotheses on the dependence of climate change on solar activity. One of them states that variations in the tropospheric temperature are caused directly by changes of the solar radiance (total or spectral). The other suggests that cosmic ray (CR) fluctuations, caused by the solar/heliospheric modulation, affect the climate via cloud formation. Confronting these hypotheses with seven different sets of the global/hemispheric temperature reconstructions for the last 400 years, we found that the former mechanism is in general more prominent than the latter. Therefore, we can conclude that in so far as the Sun climate connection is concerned tropospheric temperatures are more likely affected by variations in the UV radiation flux rather than by those in the CR flux.

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