Tying Celestial Mechanics to Earth’s Ice Ages

Re-Blogged From WUWT

Gradual falls and sharp rises in temperature for millions of years have profoundly affected living conditions on the planet and, consequently, our own evolution.

Mark Maslin is a professor of Earth system science in the department of geography at University College London.

Physics Today 73, 5, 48 (2020); https://doi.org/10.1063/PT.3.4474

Milutin Milanković, a brilliant Serbian mathematician and climatologist, postulated in 1941 that variations in Earth’s orbit could push the planet’s climate in or out of an ice age.1 Vital to that idea is the amount of insolation—incoming solar radiation—at 65° N, a bit south of the Arctic Circle. At that latitude, insolation can vary seasonally by 25%. Milanković argued that reductions in summer insolation allow some winter ice to survive. Each year for thousands of years, ice accumulates around 65° N and eventually forms sheets large enough to trigger an ice age.

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Weekly Climate and Energy News Roundup #323

Brought to You by www.SEPP.org The Science and Environmental Policy Project

By Ken Haapala, President,  (SEPP)

The Next Cooling: SEPP Chairman emeritus Fred Singer has an article published in the American Thinker on the next ice age and what can be done to possibly prevent it. After dismissing the political notions of nuclear winter, he presents evidence that we live in a geological age of Ice Ages. [The estimated temperatures during the last significant ice age are about 6ºC (about 12ºF) below current temperatures.]

Given the frequent announcements of dangerous global warming by the UN Intergovernmental Panel on Climate Change (IPCC), the US Global Change Research Program (USGCRP) and their followers, it is easy to overlook that possible cooling is real and dangerous to humanity. During the mild cooling, known as the Little Ice Age, hundreds of thousands died of famine and related diseases in Europe. Contrary to the IPCC and its followers, evidence of the cooling is found in Western Hemisphere, Asia and elsewhere.

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The Worsening Cosmic Ray Situation

Re-Blogged From http://www.SpaceWeather.com

[Cosmic Rays (GCRs) were high and Sunspots were low numerous times throughout history, notably during the ‘Maunder Minimum’, ‘Dalton Minimum’, ‘Sporer Minimum’, etc. Those were decades or longer of especially cold climate, like the Little Ice Age that still was around for George Washington and the troops at Valley Forge. Don’t worry about the radiation unless you fly long distances a couple times a week or plan a trip into outer space. You may want to buy a new ski jacket and long Johns though. -Bob]

Cosmic rays are bad–and they’re getting worse. That’s the conclusion of a new paper just published in the research journal Space Weather. The authors, led by Prof. Nathan Schwadron of the University of New Hampshire, show that radiation from deep space is dangerous and intensifying faster than previously predicted.

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