Cosmic Rays, Clouds, and Climate

@article{Carslaw2002CosmicRC,
  title={Cosmic Rays, Clouds, and Climate},
  author={Kenneth S. Carslaw and R. G. Harrison and Jasper Kirkby},
  journal={Science},
  year={2002},
  volume={298},
  pages={1732 - 1737}
}
It has been proposed that Earth's climate could be affected by changes in cloudiness caused by variations in the intensity of galactic cosmic rays in the atmosphere. This proposal stems from an observed correlation between cosmic ray intensity and Earth's average cloud cover over the course of one solar cycle. Some scientists question the reliability of the observations, whereas others, who accept them as reliable, suggest that the correlation may be caused by other physical phenomena with… 
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References

SHOWING 1-10 OF 40 REFERENCES
Is there a cosmic ray signal in recent variations in global cloudiness and cloud radiative forcing
In order to evaluate a recent hypothesis of a coupling between galactic cosmic rays, clouds, and climate we have investigated temporal variations in global cloudiness and radiative fluxes at the top
Some doubts concerning a link between cosmic ray fluxes and global cloudiness
Svensmark and Friis‐Christensen (1997, henceforth SFC) showed a strong correlation between cosmic ray flux and ISCCP total cloudiness between 1984 and 1990. They concluded that ionisation by cosmic
Low cloud properties influenced by cosmic rays
  • MarshSvensmark
  • Physics, Environmental Science
    Physical review letters
  • 2000
TLDR
Surprisingly the influence of solar variability is strongest in low clouds, which points to a microphysical mechanism involving aerosol formation that is enhanced by ionization due to cosmic rays.
Solar variability and the lower atmosphere.
Abstract Mechanisms possibly connecting solar activity to meteorology of the lower atmosphere are reviewed. Besides direct variations of solar visible emission, solar-related fluctuations in some
Correlations of atmospheric dynamics with solar wind‐induced changes of air‐Earth current density into cloud tops
We analyze reported correlations between solar activity and weather and climate and show that in six independent data sets there is a correlation of measured changes in atmospheric dynamics with
Apparent tropospheric response to MeV‐GeV particle flux variations: A connection via electrofreezing of supercooled water in high‐level clouds?
The ionization production by MeV-GeV particles (mostly galactic cosmic rays) in the lower atmosphere has-well defined variations on a day-to-day time scale related to solar activity, and on the
Correlations of atmospheric dynamics with solar activity evidence for a connection via the solar wind, atmospheric electricity, and cloud microphysics
We respond to several criticisms of the view that there is a physical linkage between solar activity and the dynamics of the troposphere and lower stratosphere, and we provide further evidence in
Modulation of the Earth's electric field by cosmic radiation
  • R. Markson
  • Physics, Environmental Science
    Nature
  • 1981
Positive correlations between cosmic radiation and ionospheric potential (VI) reported here indicate that the electrification of the atmosphere is modulated by changes in ionizing radiation. Analyses
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