Caused distinct climate change in less than a decade – and the same could happen again soon. This could throw global warming predictions out of whack.
After studying 2,800-year-old core samples from a European lake, an international team of scientists found that weakening solar activity sparked an abrupt period of cooling that lasted for about 200 years. (They didn’t label it a “Little Ice Age,” but I think we’ll eventually learn that that is what it was.)
The scientists, under the direction of the Geo Research Potsdam (GFZ), refer to the cooling period as the ‘Homeric Minimum,’ because that’s when the Greek poet Homer was writing The Odyssey.
Meteorologist Anthony Watts posted a graph showing variations in the sun’s magnetic field for the past the 10,00 years, which I am showing below. The graph shows the Homeric Minimum. Click here to see a larger view.
Writing in the journal Nature Geoscience, the researchers also state the rather obvious fact that colder periods bring crop failures, war, starvation, bitter cold and heavy rains, and that the sun is an important factor in human activity. (You’d think we should welcome global warming, wouldn’t you?)
What are frequently regarded as minor variations in solar radiation, at least regionally, can produce significant climatic effects and have far-reaching consequences, the scientists found.
As activity on the sun, and particularly the UV component of light, temporarily plummeted, it disturbed the heat budget of the middle atmosphere and the ozone layer, thereby altering the jet stream and air flow over the Arctic. The climate of the northern hemisphere abruptly turned cool, windy and rainy, especially in the winter.
Analyzing sediments in Lake Meerfelder Maar, Germany, from 3,300 to 2,000 years before present, the scientists discovered a sharp increase in windiness and cosmogenic 10Be deposition some 2,759 years ago. From this, they inferred that atmospheric circulation had reacted abruptly and in phase with the solar minimum. Beryllium 10 is always formed in the rock when it is exposed to radiation, they said.
No surprise. I point out in Not by Fire but by Ice that spikes in beryllium 10 occur in sync with the ice-age cycle. (p 198-199)
The sediments, called varves, contain important climatic information from the past. Somewhat like annual tree rings, “varves consist of a bright, spring-deposited layer from the shells of diatoms and a dark, in the remainder of the accumulated layer,” the researchers explain.
Prior to 2760 years ago, the thickness of the varves suddenly doubled, within just eight years.
This discovery corresponds well with the 1440-year cooling cycle that I discuss in Not by Fire but by Ice. (p 218).
“The 1440-year cycle brings with it ‘dramatic and rapid’ changes in climate and worldwide glacier expansion…,” I wrote, “which I attribute to underwater volcanism, triggered by changes in geomagnetic intensity, triggered by changes in the sun.”
“So here we sit,” I continued. “The next beat of the 179-year solar retrograde cycle is due. The next beat of the 360-year Little Ice Age cycle is due. The next beat of the 1440-year ice-age cycle is die. The next beat of the 100,000-year ice-age cycle is due . . . and we’re worried about global warming?”
Here we sit, with more and more proof that we’re headed into an ice age, while the U.S. government does everything in its power to shut down energy production.
You’d almost think that our leaders have a vendetta against humans.
No, that’s not possible.
See entire article with a couple of great photos of the lakes of the Eifel:
Thanks to Elise Philipp, Billy Simpson and Laurel for these links
“It is such a relief,” says Elise. “I was really worried about papayas and mangos growing here in Germany. My grandchildren need to know about snow! ;-)”