Ancient microbes yield clues to ice age timing

Cosmos Magazine ^ | 08 March 2019

[BenLurkin]

For several million years, the Earth cycled through ice ages at a regular pace, but then, 1.25 million to 700,000 years ago, something changed: ice ages went from lasting 40,000 years to 100,000.

…

By looking at the microscopic shells of microorganisms called foraminifera, Adam Hasenfratz of the Geological Institute in Zürich, Switzerland, and colleagues, find evidence of a reduction in deep water circulation, causing less carbon dioxide to be released into the air.

Oceanic changes in the Antarctic Zone could have ensured “that glacial conditions persisted despite orbital changes to the contrary”, the study says.

The new research, presented in the journal Science, suggests a solution to the mystery surrounding what is known as the mid-Pleistocene transition (MPT). Recommended

To determine the prehistoric ocean circulation, Hasenfratz and his colleagues looked at sediment samples accumulated over 1.5 million years and analysed trace elements and oxygen isotopes from preserved foraminifera shells.

The results indicated that during glacial periods after the MPT the upper regions of the Southern Ocean became fresher and cooler, while its depths grew more saline.

[BenLurkin]

pong

[Paladin2]

Less CO2?

What could possibly go wrong...

go wrong.....

go wrong.....

[rktman]

So, microbes are smarter than the assclowns on the “cli-if” channel?

[centurion316]

Evidence of climate change without any involvement of human activity. I wonder what the Democrat Party will have to say about that.

[no-to-illegals]

Lesser amounts of CO^{2 in the atmosphere generated longer ice age .... hummmm}

[Fungi]

Mere speculative balderdash.

[SunkenCiv]

Thanks BenLurkin. I knew I should have degreed in foraminifera, I only got to threeaminifera before I decided to drop out.

[SunkenCiv]

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The Cycle of Cosmic Catastrophes: Flood, Fire, and Famine in the History of Civilization by Richard Firestone, Allen West, and Simon Warwick-Smith

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[SunkenCiv]

Thanks BenLurkin. Microbes, yourcrobes, everybodyscrobes.

join or quit view topics view or post blog bookmark post new topic subscribe

[mosesdapoet]

This come to mind every time mention of climate and solar activity comes up

EARTH TO COOL DOWN WARNS GEO SCIENTIST

2007 The US MAT.Com

Scientific reports from Canada and Greenland has indicated that the the shrinking arctic ice sheets have begun to replace themselves rapidly. Strongly suggesting the earth instead of warming, is beginning to cool down. It is still not known (or proven) if this is the result because of the reduced rate of sun spot activity.

Canadian geo scientist Professor R. Timothy Patterson of Carelton University is urging a go-slow on the rush for governments to “Play God” with global warming legislative blaming this on CO2 (carbon dioxide) discharges. Legislating corrections attempting to control a natural cyclic occurrence caused by; sun spots, the magnetic solar wind, and cyclic earth magnetic polarity reversal, among other natural occurrences including volcanism, meteors etc. Probably plays a very significant role in climate change. Yet ignorantly blaming man made CO2 emissions for climatic change. which is becoming a rapidly discredited and minuscule cause of global warming in his article published by Canada’s Financial Post. 6/20/07

Patterson was selected by the Canadian government to study the fluctuations in certain types of fish populations.
While doing so the Canadian Geo-Scientist found a correlation when certain species of fish had high population and then drastic drop offs. He discovered these fluctuations corresponded with sun spot activity and solar radiation vs cosmic activity. When earth cooling occurred.

Studying deep fjords along the Western Canadian coast where deep pools of low oxidation water exist. The Patterson study reached deep into the earths recent past of 4000 years of undisturbed sediments. Patterson found that when aquatic activity was highest and lowest in those collected sediments having high aquatic content had matched known solar protection when the magnetic wind was highest, and dropped off when earth magnetic fields activities were lowest.Thus causing cosmic radiation to intensify.

Then because the earth became unprotected by its magnetic fields from galactic cosmic activity. Patterson cites several accepted theories which concludes this then created cloud activity during such periods which increased drastically. Thus cooling earth and bringing in its ice ages.

In his presentation here is a professor urging more scientific study (like Pope Benedict)is needed. That politicians including Al Gore, of The Earth Is Flat Society, don’t know what the hell they’re talking about. Strongly suggesting that the global warming may be caused by exhaling politicos rather than serious scientific examination.

Patterson seems to be saying before Canadians start investing in palm trees they should be considering better parkas because what goes up must come down and the Mexicans better move over for a reverse population flow. The story was featured in The Drudge Report, and World Net Daily, which were linked in The US Mat’s last page. But lost due to source link changes . http://www.theusmat.com/index.htm

[zeestephen]

Ping

[zeestephen]

At the end of the last Ice Age - about 20,000 years ago - CO2 levels dropped to 180 parts per million.

At 150 ppm, most plant life and land animals on Earth would have died.

By the way, the Earth warmed up for 800 years BEFORE CO2 started to rise, about 19,200 years ago.

[Openurmind]

The southern circumpolar currents broke through between Terra Del Fuego and Antarctica changing everything world wide.

[Nuc 1.1]

CO2 is a lagging indicator.

[ckilmer]

Lesser amounts of CO2 in the atmosphere generated longer ice age .... hummmm

........imho the more or less amounts of CO2 in the atmosphere is an effect rather than a cause.

The primary cause is the sun.

[logi_cal869]

That’s due to it not being causative: It’s an effect.

[<1/1,000,000th%]

Technically these are glaciations. We’ve been in an ice age for 3 million years.

[Nuc 1.1]

Correct. Hence the statement.

[bert]

actually, less CO2 in the atmosphere resulted in lower green house effect and thus less retained heat and then cooling that allowed massive ice build up

The paper strains and strains to connect current global warming with ancient cooling. for intellectual continuity, the reason for heating and cooling must be the same. The paper proves that reason is atmospheric CO@ levels.

Since there were no men at the time, what caused the cooling and then the following heating?