Physics
Scientific paper
Jun 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010ge%26ae..50..393d&link_type=abstract
Geomagnetism and Aeronomy, Volume 50, Issue 3, pp.393-402
Physics
Scientific paper
The effect of the natural factors (solar activity) on the long-term variations of global temperatures has been analyzed based on studying the borehole thermal regime in a time interval of 1000 years ago. It has been indicated that the temperatures started rising about 500 rather than 150 years ago as adherents of the anthropogenic impact on climate consider. The temperature maximum, the amplitude of which is larger than the present-day rise of temperature, is determined about 1000 years ago. The appearance of this maximum corresponds to the time interval of a long-term increase in solar activity according to the data of the 14C and 10Be cosmogenic isotopes. The stabilization of the global temperature in the last decades at a constant increase in the amount of greenhouse gases in the atmosphere contradicts the concept, according to which an increase in the global temperature in the last decades is only explained by the anthropogenic impact.
Dergachev Valentin A.
Raspopov Oleg M.
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