Unprecedented Global Warming: Took 4000 years for 1.25 degrees rise in temp; and just ONE generation in Industrial era

Last updated on: March 11, 2013 at 10:23 pm by Desh Kapoor

Unprecedented Global Warming: Took 4000 years for 1.25 degrees rise in temp; and just ONE generation in Industrial era 2013-03-11T22:23:58-05:00 Desh Kapoor

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A new study lays to rest the nonsense that the right-wingers in US keep harping on. Global Warming IS real. Temperatures haven’t spiked like this in the last 11,000 years!

Research released Thursday in the journal Science uses fossils of tiny marine organisms to reconstruct global temperatures back to the end of the last ice age. It shows how the globe for several thousands of years was cooling until an unprecedented reversal in the 20th century.

Scientists say it is further evidence that modern-day global warming isn’t natural, but the result of rising carbon dioxide emissions that have rapidly grown since the Industrial Revolution began roughly 250 years ago.

What took 4000 years – temperature to go up 1.25 degrees; it has taken just ONE generation to accomplish in the modern world.

Marcott’s data indicates that it took 4,000 years for the world to warm about 1.25 degrees from the end of the ice age to about 7,000 years ago. The same fossil-based data suggest a similar level of warming occurring in just one generation: from the 1920s to the 1940s. Actual thermometer records don’t show the rise from the 1920s to the 1940s was quite that big and Marcott said for such recent time periods it is better to use actual thermometer readings than his proxies.

To come to the current temperatures, we might have to go all the way back to 125,000 years!!

Marcott’s research finds the climate had been gently warming out of the ice age with a slow cooling that started about 6,000 years ago.

Then the cooling reversed with a vengeance.

The study shows the recent heat spike “has no precedent as far back as we can go with any confidence, 11,000 years arguably,” said Pennsylvania State University professor Michael Mann, who wrote the original hockey stick study but wasn’t part of this research. He said scientists may have to go back 125,000 years to find warmer temperatures potentially rivaling today’s.

Industrial Revolution

Michael Mann

Oregon State University

Pennsylvania State University

Temperature

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