Doug L. Hoffman, writing at The Resilient Earth has an interesting post on how changes in the Sun’s UV radiation can impact the climate here on earth, with links to known grand minimums. Here is Doug’s introduction:
That large changes in solar radiation can affect Earth’s climate is widely accepted. However, the hypothesis of solar-induced centennial to decadal climate changes, which suggests feedback mechanisms in the climate system amplifying even small solar variations, has not found acceptance among orthodox climate scientists. The climate change clique would rather place their money on greenhouse gasses—human generated CO2 in particular. It is true that satellite-based measurements of total solar irradiance show that mean variations during solar cycles do not exceed 0.2 W m−2 (~ 0.1% of the Sun’s energy output). It has also been noted that relatively large variations of 5–8% in the ultraviolet (UV) frequencies can occur, though how this could change global climate remained a puzzlement—but perhaps no longer. From studying a significant climate shift 2,800 years ago, a group of scientists have concluded that large changes in solar UV radiation can, indeed, affect climate by inducing atmospheric changes.
His money paragraph for grand minimum watchers:
Here is recent research by two independent groups of investigators that have suggested plausible mechanisms for variation in the Sun’s ultraviolet radiation to affect climate. This should surprise no one who is aware of the Maunder Minimum and the corresponding Little Ice Age—a time of advancing mountain glaciers in the Alps, failed crops and cold weather around the world. It is generally agreed that there were three temperature minima, occurring around 1650, 1770, and 1850. Each minima separated by slight warming intervals. These periods coincide closely with times of solar inactivity, with some of the worst weather occurring squarely during the Maunder Minimum.
Doug’s concluding paragraph:
Let me emphasize the research paper’s central conclusion: “changes in atmospheric circulation amplified the solar signal and caused abrupt climate change.” In other words, small changes in the Sun’s output can and have driven rapid climate change in the recent past. Too bad for the warmists, because science has shown that Earth’s climate does groove to the Sun’s UV tune. No CO2 emissions need apply.
I recommend reading the full post HERE, with some attention to his discussion on he impact that the Arctic Oscillation and North Atlantic Oscillation have on the position of the Jet Stream, which is having an impact on our current hot summer in the US and the past cold winter in Europe. The question is what will be our US winter be?