A new study done by the University of Reading and the Met Office looked at the likely changes in solar activity over the next 90 years and whether a decrease would offset global warming by any significant measure. The answer: no.
The study found that the sun's output is likely to decrease until 2100, but that decrease will only lead to a global temperature reduction of 0.08 °C. Compared to the forecasted warming of at least 2.5 °C over the same period from greenhouse gases, a solar activity decline doesn't get us very far.
The study found that even if the sun's output fell to it's lowest known levels that occurred between 1645 and 1715, global temperatures would still only be reduced by 0.13 °C.
While the study's authors concede that their model doesn't fully capture all of the uncertainties in the climate system and solar output, the results do certainly let us know that a decline in solar activity is no match for greenhouse gas emissions.
written by Ronald Brak, January 26, 2012
written by JanS, January 31, 2012
written by Ronald Brak, January 31, 2012
written by Sapoty Brook, February 03, 2012
written by Walter R. Rice, February 03, 2012
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