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Research provides new theory on cause of ice age 2.6 million years ago
wattsupwiththat.com ^ | June 27, 2014 | by Anthony Watts

Posted on 06/29/2014 6:24:28 PM PDT by Ernest_at_the_Beach

From Royal Holloway, University of London

New research published today (Friday 27th June 2014) in the journal Nature Scientific Reports has provided a major new theory on the cause of the ice age that covered large parts of the Northern Hemisphere 2.6 million years ago.

The study, co-authored by Dr Thomas Stevens, from the Department of Geography at Royal Holloway, University of London, found a previously unknown mechanism by which the joining of North and South America changed the salinity of the Pacific Ocean and caused major ice sheet growth across the Northern Hemisphere.

The change in salinity encouraged sea ice to form which in turn created a change in wind patterns, leading to intensified monsoons. These provided moisture that caused an increase in snowfall and the growth of major ice sheets, some of which reached 3km thick.

The team of researchers analysed deposits of wind-blown dust called red clay that accumulated between six million and two and a half million years ago in north central China, adjacent to the Tibetan plateau, and used them to reconstruct changing monsoon precipitation and temperature.

“Until now, the cause of the Quaternary ice age had been a hotly debated topic”, said Dr Stevens. “Our findings suggest a significant link between ice sheet growth, the monsoon and the closing of the Panama Seaway, as North and South America drifted closer together. This provides us with a major new theory on the origins of the ice age, and ultimately our current climate system.”

Surprisingly, the researchers found there was a strengthening of the monsoon during global cooling, instead of the intense rainfall normally associated with warmer climates.

Dr Stevens added: “This led us to discover a previously unknown interaction between plate tectonic movements in the Americas and dramatic changes in global temperature. The intensified monsoons created a positive feedback cycle, promoting more global cooling, more sea ice and even stronger precipitation, culminating in the spread of huge glaciers across the Northern Hemisphere.”


TOPICS: Conspiracy; Science; Weather
KEYWORDS: climatechange; globalwarming; globalwarminghoax

1 posted on 06/29/2014 6:24:28 PM PDT by Ernest_at_the_Beach
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To: Ernest_at_the_Beach

Bush?


2 posted on 06/29/2014 6:25:48 PM PDT by goodwithagun (My gun has killed fewer people than Ted Kennedy's car.)
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To: Ernest_at_the_Beach

All those Neanderthals quit building fires, the earth cooled and frosted over. Then the Neanderthals decided that “Hey, this ain’t cool, or it is” and they started building fires again thereby warming the earth again. Mystery solved.


3 posted on 06/29/2014 6:27:19 PM PDT by SkyDancer (If you don't read the newspapers you are uninformed. If you do read newspapers you are misinformed)
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To: Ernest_at_the_Beach

But did they find any of Algore’s ancestors in the ice?


4 posted on 06/29/2014 6:27:30 PM PDT by ImNotLying (The Right To Bear Arms: Making good people helpless won't make bad people harmless!)
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To: goodwithagun

5 posted on 06/29/2014 6:27:47 PM PDT by BenLurkin (This is not a statement of fact. It is either opinion or satire; or both.)
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To: Ernest_at_the_Beach

But how does all this involve the Koch brothers?
I remain skeptical.


6 posted on 06/29/2014 6:29:06 PM PDT by Ouchthatonehurt ("When you're going through hell, keep going." - Sir Winston Churchill)
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To: Ernest_at_the_Beach

I would think the joining of north and south America would be so slow that it wouldn’t cause a major disruption.


7 posted on 06/29/2014 6:32:26 PM PDT by cripplecreek (Remember the River Raisin.)
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Comment #8 Removed by Moderator

To: Ernest_at_the_Beach

mmm...

Seems like the study is trying to link major climate change to relatively small environmental changes; you know, like humans can cause global warming, er, *climate disruption*.


9 posted on 06/29/2014 6:36:32 PM PDT by jjotto ("Ya could look it up!")
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To: Ernest_at_the_Beach

Global warming cause the ice age.


10 posted on 06/29/2014 6:41:36 PM PDT by E. Pluribus Unum ("The more numerous the laws, the more corrupt the government." --Tacitus)
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To: Ernest_at_the_Beach

The key word is THEORY. Anything to deny the Scriptures and confuse the skulls full of mush sitting in their classes.....Oh yes, and don’t forget tbe grant $$$$ they hope to garner with this racy, agnostic pipedream.
It reminds me of a wry saying I used to hear in the business world when someone was attempting to sell a bill of goods: “If you can’t dazzle them with brilliance, baffle them with bull $h!t.”

Since this new theory comes from a Brit university like unto the one that originated the fraudulent ‘Hockey Stick” weather graph, I think I must file it in the BS folder.


11 posted on 06/29/2014 6:48:13 PM PDT by Tucker39 (Welcome to America! Now speak English; and keep to the right....In driving, in Faith, and in politic)
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To: SunkenCiv; Tolerance Sucks Rocks; Fred Nerks; NormsRevenge; Marine_Uncle

fyi


12 posted on 06/29/2014 6:52:26 PM PDT by Ernest_at_the_Beach
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To: ImNotLying

I thought that this was covered in that film documentary that came out a couple of years ago.

The day after Tuesday or something like that...


13 posted on 06/29/2014 6:57:30 PM PDT by Delta Dawn (Fluent in two languages: English and cursive.)
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To: Ernest_at_the_Beach

Does that explain Bill Nye’s saying that there were other ice ages, too? What caused them? Used to watch him with my kid, with discussion.


14 posted on 06/29/2014 6:58:24 PM PDT by huldah1776
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To: Ernest_at_the_Beach

Milankovich Cycles.


15 posted on 06/29/2014 7:02:18 PM PDT by Eagles6 (Valley Forge Redux. If not now, when? If not here, where?)
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To: Ernest_at_the_Beach

This is not an entirely new idea. The rise of the Himalayas combined with the monsoon dropping acid rain on the mountains has been seen as a cause of the extremely low CO2 levels and further combined with the change in currents brought about by central America’s change in current patterns has been thought responsible for the recent ice ages.


16 posted on 06/29/2014 7:04:47 PM PDT by JimSEA
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To: cripplecreek
I would think the joining of north and south America would be so slow that it wouldn’t cause a major disruption.

I agree. I think that the only effect that the joining had was that WHEN the salinity in the oceans changed, it tended to stay that way because they could no longer mix.

Something else caused the changed in salinity, imho.

17 posted on 06/29/2014 7:10:54 PM PDT by UCANSEE2 (Lost my tagline on Flight MH370. Sorry for the inconvenience.)
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To: huldah1776
Does that explain Bill Nye’s saying that there were other ice ages, too?

That's nothing. The entire face of the Earth has been burnt free of all ice and life at least six times.

18 posted on 06/29/2014 7:13:27 PM PDT by UCANSEE2 (Lost my tagline on Flight MH370. Sorry for the inconvenience.)
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To: UCANSEE2; cripplecreek

The impact itself wasn’t the issue.

Before it happened, North and South America were two isolated islands, so there was marine current flow between them.

Once they joined, that current was cut off - and that’s what these scientists say started the Ice Ages.


19 posted on 06/29/2014 7:36:39 PM PDT by canuck_conservative
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To: canuck_conservative

I understand that but they didn’t join instantaneously. It took a long time for them to join meaning the flow between the oceans would have been slowly choked off.


20 posted on 06/29/2014 7:38:55 PM PDT by cripplecreek (Remember the River Raisin.)
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To: Ernest_at_the_Beach
Lots of theories from lots of different types of researchers.
Just what is accurate and what is not is yet on the table.
21 posted on 06/29/2014 9:00:09 PM PDT by Marine_Uncle (Galt level is not far away......)
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To: Ernest_at_the_Beach

This is not how I remember it, but I was young then, so I may be mistaken.. :)


22 posted on 06/29/2014 9:24:28 PM PDT by carlo3b (Corrupt politicians make the other ten percent look bad.. Henry Kissinger)
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To: Ernest_at_the_Beach

My theory is it got cold.


23 posted on 06/29/2014 9:26:54 PM PDT by minnesota_bound
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To: Ernest_at_the_Beach

Geography makes a lot more sense than cow farts.


24 posted on 06/30/2014 7:50:45 AM PDT by TigersEye ("No man left behind" means something different to 0bama.)
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To: Ernest_at_the_Beach

Salt is an antifreeze. More salt leads to more ice. Who would have ever thunk it.


25 posted on 06/30/2014 1:45:19 PM PDT by LoneRangerMassachusetts (The meek shall not inherit the Earth)
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