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In turn, low sunspot activity may have triggered that volcanism …
and here we go again.
“Little Ice Age began with a bang,” headlines this article in Science News. “Frozen moss suggests climate cooling kicked off fast, possibly with help from volcanoes.”
“The Little Ice Age, a centuries-long spell of cold summers in Europe and elsewhere, began suddenly late in the 13th century,” writes journalist Devin Powell.
“A string of volcanic explosions may have set off this change in climate by belching particles that reflected sunlight and allowed Arctic sea ice to reach epic proportions.”
“This cooling wasn’t gradual; it was an abrupt shift,” says Gifford Miller, a paleoclimatologist and geologist at the University of Colorado Boulder.
Miller’s team traveled to Canada’s Baffin Island where they carbon dated moss long entombed in the ice. They found “two sudden advances of the snow line that killed off the vegetation: a sudden cold spell between 1275 to 1300, followed by intensifying cold between 1430 and 1455.”
Enter the volcanoes
“The second half of the 13th century had the most volcanism of any period of the past 1,500 years,” says Alan Robock, an atmospheric scientist at Rutgers University.
Polar ice samples have revealed a series of eruptions, says Robock: an especially big explosion somewhere in the world in 1258, and three smaller ones in 1268, 1275 and 1284.
Bingo! Look at those dates! I’ve been yelling for years that a sudden increase in volcanism could drive us into an ice age almost overnight.
Now here’s the proof.
Enter the sunspots
More ominously, and something that Miller and his colleagues may not have noticed, is that both periods of cooling occurred in sync with low sunspot activity.
Those two periods of low sunspot activity are known respectively as the Wolf Minimum and the Sporer Minimum.
When you get to this link, click on the graph again to make it even bigger: http://www.vukcevic.co.uk/GrandMinima.gif
Can it be that low sunspot activity triggers volcanic activity on earth? I think it does.
With sunspot activity now at a 100-year low – and forecast to go even lower – can there be any question as to where our climate is headed?
Start stockpiling that food!
Thanks to Steve Foster for this link
24 May - 3 sunspots
I receive no funding from any company, corporation, or organization. Thanks, Robert
Good news! A publisher in Italy has now translated Not by Fire but by Ice into Italian.
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