Abstract
Regularities in the long-term global temperature variations for the past two millennia have been analyzed. It was shown that the periods of a prolonged temperature rise and drop were most pronounced before the industrial epoch. Analysis indicates that the extrema in the global temperature variations in the first and second millennia correspond to long-term solar activity increases and decreases. The performed analysis of temperature reconstructions, which were performed using different methods (including the geothermal method), show that the observed climate change during the past two millennia is in good agreement with the variations in the concentration of the 14C and 10Be cosmogenic isotopes modulated by time-varying solar activity.
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Original Russian Text © V.A. Dergachev, 2015, published in Geomagnetizm i Aeronomiya, 2015, Vol. 55, No. 2, pp. 147–160.
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Dergachev, V.A. Solar activity, cosmic rays, and earth temperature reconstructions for the past two millennia. Part 2. Analysis of the relation between the global temperature variations and natural processes. Geomagn. Aeron. 55, 139–151 (2015). https://doi.org/10.1134/S0016793215020036
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DOI: https://doi.org/10.1134/S0016793215020036