Climate Change solar variability

Cliver, E. W., V. Boriakoff, and J. Feynman, Solar Variability and Climate Change Geomagnetic aa Index and Global Surface Temperature, Geophys. Res. Lett., 25, 1035-1038 (1998). 

Anderson, R.Y. (1993) The varve chronometer in Elk Lake record of climatic variability and evidence for solar-geomagnetic 14C climate connection. In Bradbury, J.P. Dean, W. E. (Eds) Elk Lake, Minnesota Evidence for Rapid Climate Change in the North-central United States. Special Paper 276. Boulder, CO Geological Society of America, pp. 45-67. 

The long-term fluctuations in temperature, precipitation, wind, and all other aspects of the Earth s climate. External processes, such as solar-irradiance variations, variations of the Earth s orbital parameters (eccentricity, precession, and inclination), lithosphere motions, and volcanic activity, are factors in climatic variation. Internal variations of the climate system also produce fluctuations of sufficient magnitude and variability to explain observed climate change through the feedbaek proeesses interrelating the components of the elimate system, climate sensitivity... 

The 0.6°C rise in globally averaged temperatures is compatible with, in terms of both magnitude and timing, that predicted by models which take the combined influences of human factors and solar variability into account. More recent studies of attribution have considered the patterns of temperature change, both spatially and in the vertical column of the atmosphere. Climate models indicate... 

Many other complex interactions are involved in climatic effects, among them lateral and vertical perturbations of ocean currents, changes in prevailing winds, periodicity in the earth s tilt (1 1/4°, 21,000-year cycle), position of elliptical orbit (97,000-year cycle), and changes in the solar flux (correlated with sunspots, ca. 13-year-cycle) [75]. As the periods of these factors differ, the warming effect of some will be augmented by in-phase peaks at times, and will be decreased or eliminated by out-of-phase peaks at others. So, the net effect is at best difficult to predict. Again, like atmospheric moisture, these variables are beyond our control. 

Hoffert M.I., Frei A., Narayanan V.K. (1988) Application of solar max acrim data to analysis of solar-driven climatic variability on earth. Clim. Change 13, 267-86. 

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