All-natural, not so long ago, hugely destructive, and a repeat would devastate people and planet
Category: Ice Ages
What Is Milankovitch Theory, What Is It Not, And What Can We Learn from It?
The interglacial periods are initiated by amplification and terminated by reduction of the insolation due to the eccentricity through the precession index.
The “100,000-Year Problem” and Earth’s Chaotic Non-Linear Climate
The main point of the paper is that the 100,000-year and 41,000-year inter-glacial cycles that are the subject of the “100,000-year problem” never existed.
Ice Ages, Feedback Diagrams, and Climate Triggers
As well defined turning points in response and a limit-cycle of operation are long established characteristics of relay control systems, I submit that Earth’s climate regulation is non-linear in much…
‘Problem of missing ice’ finally solved by movement of the earth’s crust
Until now, mathematical models of the last ice age could not reconcile the height of the sea level and the thickness of the glacier masses: the so-called Missing Ice Problem.
The melting of large icebergs is a key stage in the evolution of ice ages
A new study, in which the Andalusian Earth Sciences Institute (IACT) (CSIC-UGR) participated, has described for the first time a key stage in the beginning of the great glaciations and…
Tying celestial mechanics to Earth’s ice ages
From Physics Today 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…
Earth’s Ice Ages
By Andy May The phrase “Ice Age” is poorly defined and often abused, so let’s first define the climate state during most ice ages. It is called “Icehouse Earth.” The…
Dust in ice cores leads to new knowledge on the advancement of the ice before the ice age
University of Copenhagen Ice core research: Researchers from the section Physics of Ice, Climate and Earth (PICE) at the Niels Bohr Institute, University of Copenhagen, have succeeded in making a…
Auroral Evidence of Upcoming Mini or Little Ice Age?
Guest Opinion; Dr. Tim Ball A recent article in the British newspaper The Express titled, “Northern Lights in the UK: Can you watch Aurora Borealis from UK? Where can you…
Claim: Indonesian Mountain Ranges are Responsible for the Current Ice Age
Guest essay by Eric Worrall Paleo-climate experts have advanced a theory that weathering of Indonesian mountain ranges is starving the planet of CO2, which is keeping the Earth locked in…
‘True polar wander’ may have caused ice age
From Phys.org November 19, 2018, Rice University Earth’s latest ice age may have been caused by changes deep inside the planet. Based on evidence from the Pacific Ocean, including…
Why did the buffalo cross the land bridge?
To get to the other side… Guest post by David Middleton “There has long been a controversy about the timing of bison arrival in North America,” said Shapiro. Bison arrival…
The Warmer The Icier Part II
Guest Post by Willis Eschenbach In the first part of this disquisition, I discussed the oddity that the warmer it gets around Antarctica, the more ice accumulates on the Antarctic…
Chaos & Climate – Part 2: Chaos = Stability
Guest Essay by Kip Hansen “…we should recognise that we are dealing with a coupled non-linear chaotic system, and therefore that the long-term prediction of future climate states…
The Icebox Heats Up
Guest Post by Willis Eschenbach Well, either it’s a genetic defect or I’m just a glutton for punishment, but I’m going to delve some more into the ice ages. This…
Into and Out of the Icebox
Guest Post by Willis Eschenbach Inspired by a random comment by Steve McIntyre over at his marvelous blog Climate Audit, I got to thinking about the ice ages. I’ve long…
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