The question whether
human activities seriously affect climate is asked with increasing voice these
days. Quite understandable since the climate appears to be out of control with
the significant global temperature increases already seen during the last three
decades and with still heavier temperature increases to come in the future according
to prognoses, among others, in the recent comprehensive IPCC reports .
However, the most recent climate data , show global temperature development
levelling off or even turning negative since 2001 in contrast to the
anticipated course related to the steady increases in the concentration in the
atmosphere of green-house gasses, primarily carbon dioxide and methane . The
purpose of this communication is to demonstrate that the reduced rate in the
global temperature rise complies with expectations related to the decaying
level of solar activity according to the relation published in an earlier
analysis . Without the reduction in the solar activity-related contributions the
global temperatures would have increased steadily from 1980 to present.
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