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Well said, Ken - it should be noted that the known forcings from solar activity (e.g. Maunder to grand max) are something like an order of magnitude smaller, in W/sq m, than greenhouse gas radiative forcing. To be honest, I read the article and saw little really new in that area to what I read in the literature a decade ago. Solar forcings do not dominate modern climate forcings, CO2 and GHGs do. But variations in the Sun have some interesting regional effects on circulation. So while it's interesting to see further research into Sun-climate links - which has been a topic of strong research for decades - it doesn't alter the most important forcings on climate.
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