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1,800 years of global ocean cooling


Anomalocaris

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Prior to the advent of human-caused global warming in the 19th century, the surface layer of Earth's oceans had undergone 1,800 years of a steady cooling trend, according to a new study. During the latter half of this cooling period, the trend was most likely driven by large and frequent volcanic eruptions.

1,800 years of global ocean cooling halted by global warming

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That doesn't sound good. If I understand this correctly even if we clean up our act imediately, stop polluting, the earth will keep warming for a while because of the ocean absorbing so much heat from global warming.

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The flip side is, if we hadn't, we'd be in another ice age.

Harte

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Well right now with summer dragging along and the temps in the hundred + degrees area for about 80 or 90 days here in the desert I'll vote for another ice age.

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The flip side is, if we hadn't, we'd be in another ice age.

Harte

Without human-caused global warming, the next ice age would still be 8000 to 10,000 years away. The Milankovitch Cycles don't line up so as to create an ice age at this time (At least two of them have to get together at the same time and that didn't happen this time around.).

With humans in charge of the climate, there will never be another ice age. We know how to warm the planet. The output of one CFC plant could do it. What we haven't figured out is how to cool it.

Doug

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Ocean cooling for 1800 years seems to say differently.

Harte

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2015 Hottest Year to Date, Could Top 2014 Record

  • Published: April 17th, 2015

  • climate central link

2015 Still On Pace as Hottest Year On Record

By Jon Erdman

Published Jun 18 2015 12:25 PM EDT

NOAA: July hottest month on record, and 2015 could be hottest year

By Mariano Castillo and Brandon Miller, CNN

Updated 1811 GMT (0111 HKT) August 20, 2015 | Video Source: CNN

The numbers add up and is consistent ~ more concerning to me is the 'failures' of modern equipments and machinery failing when operating temperature exceeds the max level they were designed for ...

Or just the plain old signs of weather affecting the balance in nature ~

Wildfires roar throughout Washington state, governor says

By Ben Brumfield, Michael Martinez and Steve Almasy, CNN

Updated 2338 GMT (0638 HKT) August 20, 2015

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Guest Br Cornelius

Ocean cooling for 1800 years seems to say differently.

Harte

We have been cooling as a planet ever since the last post ice age bounce which represents around 8000years of cooling. It was still going to be at least as long again before we re-entered an ice age all other things been unchanged. Geological processes are glacially slow and the minimum time period for a Milankovich cycle is 20thousand years.

Br Cornelius

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Opinons, obviously, differ, but:

But as a mat­ter of sci­en­tif­ic cu­ri­os­ity, it’s worth not­ing that “in­creased gla­cia­tion... would probably be hap­pen­ing to­day” if hu­mans weren’t he­re, said John Kutz­bach, a cli­mate mod­el­er at the Uni­ver­s­ity of Wis­con­sin-Mad­i­son.

The theory is reminiscent of another re­cent piece of re­search, sug­gest­ing a bout of glo­bal warm­ing may have kept Earth from to­tally freez­ing over hun­dreds of mil­lions of years ago. Only now, re­search­ers, say, some­thing similar could be hap­pening to­day.

The con­tro­ver­sial idea—first pro­posed by Uni­ver­s­ity of Vir­gin­ia cli­ma­tolo­g­ist Wil­liam F. Rud­di­man—is based on the con­ten­ti­on that hu­man-induced glob­al warm­ing started long be­fore it’s gen­er­ally ac­cept­ed to have be­gun.

Source

Of course, "increased glaciation" doesn't necessarily mean a full-blown Ice Age.

Harte

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Ocean cooling for 1800 years seems to say differently.

Harte

Ice sheets ebb and flow with the climate. Minor fluctuations occur all the time. What I am talking about is something like the Wisconsin Ice Age with two miles of ice cover and glaciers reaching to the Ohio River.

Doug

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