Importance of the Terrestrial Cosmic Ray Flux on Climate

Details Importance of the Terrestrial Cosmic Ray Flux on Climate Importance of the Terrestrial Cosmic Ray Flux on Climate

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmgc31a0743r&link_type=abstract

American Geophysical Union, Fall Meeting 2008, abstract #GC31A-0743

Other

1616 Climate Variability (1635, 3305, 3309, 4215, 4513), 3304 Atmospheric Electricity, 3309 Climatology (1616, 1620, 3305, 4215, 8408)

Scientific paper

There has been debate in the scientific community whether or not changes in solar activity affect earth's climate significantly. One of the main arguments against solar influence is that the intensity of solar radiation changes by too little (only 0.1 percent) over a solar cycle to have any significant consequence for Earth's climate. Others, argue that changes in the UV are as much as a few percent over a solar cycle, and should not be ignored in the context of climate change. An hitherto largely ignored factor is the effect of the solar modulated terrestrial cosmic ray flux on earth's climate. It has been reported by Svensmark that the terrestrial cosmic ray flux is correlated with cloud cover over the oceans (at least as measured over one single solar cycle). We present evidence going back as far as 100,000 years supporting this hypothesis, and present a sun-climate connection that is facilitated by the solar modulated cosmic ray flux, rather than by the small variations in solar insolation. We argue that the proposed mechanism greatly enhances the sun's import on climate change, and must be taken into account when modelling climate.

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