Were short warm periods typical for transitions between interglacial and glacial epochs?

eurekalert.org ^ | March 2, 2010

[Free ThinkerNY]

Researchers evaluate climate fluctuations from 115,000 years ago

Halle (Saale)/Leipzig/Moscow. At the end of the last interglacial epoch, around 115,000 years ago, there were significant climate fluctuations. In Central and Eastern Europe, the slow transition from the Eemian Interglacial to the Weichselian Glacial was marked by a growing instability in vegetation trends with possibly at least two warming events. This is the finding of German and Russian climate researchers who have evaluated geochemical and pollen analyses of lake sediments in Saxony-Anhalt, Brandenburg and Russia. Writing in Quaternary International, scientists from the Helmholtz Centre for Environmental Research (UFZ), the Saxon Academy of Sciences (SAW) in Leipzig and the Russian Academy of Sciences say that a short warming event at the very end of the last interglacial period marked the final transition to the ice age.

The Eemian Interglacial was the last interglacial epoch before the current one, the Holocene. It began around 126,000 years ago, ended around 115,000 years ago and is named after the river Eem in the Netherlands. The followed Weichselian Glacial ended around 15,000 years ago is the most recent glacial epoch named after the Polish river Weichsel. At its peak around 21,000 years ago, the glaciers stretched as far as the south of Berlin (Brandenburg Stadium).

The researchers studied lake sediments to reconstruct the climate history of the Eemian Interglacial, since deposits on river and lake beds can build up a climate archive over the years. The sediment samples came from lakes that existed at the time, but which have since silted up and been uncovered in the former open cast mines at Gröbern near Bitterfeld, Neumark-Nord in the Geiseltal valley near Merseburg, and Klinge near Cottbus and at Ples on the upper reaches of the Volga, around 400 kilometres north-east of Moscow.

[Apercu]

Has anyone been able to correlate magnetic pole shifting to
these past climate changes?If we are indeed headed toward a mini ice age - carbon dioxide emissions good - Algore bad!

[Waverunner]

Back in the 70’s the theory was the interglacial period was overdue to end... get ready for the coming ice age.

[SunkenCiv]

New Study Says Global Warming May Be Signal of Impending Ice Age
The Lid/Helmholtz Association of German Research Centres | 3/3/2010 | The Lid
Posted on 03/03/2010 6:49:16 PM PST by Shellybenoit
http://www.freerepublic.com/focus/bloggers/2463683/posts

[SunkenCiv]

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[VeniVidiVici]

From a climate history perspective, we are currently at the end of the Holocene and could therefore expect to see a cooling-down in a few thousand years if there had been no human influence on the atmosphere and the resulting global warming.

Boy, they never give up, do they? As if what puny amounts of carbon dioxide we're throwing up into the atmosphere could defeat a climate mechanism that triggers ice sheets to cover half of the Earth's surface.

A layman's guess likens this to throwing a pot of hot water on a glacier and screaming the resulting melt will kill us all with higher water levels.

[mosesdapoet]

Magnatisim & weather:
Tim Patterson makes some references to it in his report on fish populations rise and fall along Canada’s western fiords which he attributes to solar activity , 1st reported in Canada’s Financial Post which was taken over by the National Post and vertually obliterated his findings into a screed about global warming (My extract in http://www.theusmat.com/ .).

There was also a posting about an Austrialian scientist citing a magnetic field connection between cloud direction and drought in that country.
And another posting of finding winds carrying iron particles from the Sahara causing a red color in an Atlantic coral bed, which was not atributed to the fluctuating magnetic fields probably because the connection was not looked for .
But there seems to be something to it.

[BroJoeK]

"As if what puny amounts of carbon dioxide we're throwing up into the atmosphere could defeat a climate mechanism that triggers ice sheets to cover half of the Earth's surface."

Right. But just suppose, for sake of argument, that man-made CO2 DID delay the onset of the next ice-age by a few decades or centuries.

In what possible sense is that a BAD thing?