Pretty wild!

"It probably was (a tropical paradise) but the mosquitoes were probably the size of your head," said Yale geology professor Mark Pagani, a co-author of the study.

Here's the whole article:

Acrtic was once tropical, studies show

May 31, 2006

ASSOCIATED PRESS
Scientists have found what might have been the ideal ancient vacation hot spot with a 74-degree Fahrenheit average temperature, alligator ancestors and palm trees. It's smack in the middle of the Arctic.
First-of-its-kind core samples dug up from deep beneath the Arctic Ocean floor show that 55 million years ago an area near the North Pole was practically a subtropical paradise, three new studies show.
The scientists say their findings are a glimpse backward into a much warmer-than-thought polar region heated by greenhouse gases that came about naturally.
Skeptics of man-made causes of global warming have nothing to rejoice over, however. The researchers say their studies appearing in tomorrow's issue of Nature also offer a peek at just how bad conditions can get.
"It probably was (a tropical paradise) but the mosquitoes were probably the size of your head," said Yale geology professor Mark Pagani, a co-author of the study.
And what a watery, swampy world it must have been.
"Imagine a world where there are dense sequoia trees and cypress trees like in Florida that ring the Arctic Ocean," said Mr. Pagani, a member of the multinational Arctic Coring Expedition that conducted the research.
Millions of years ago the Earth experienced an extended period of natural global warming. But about 55 million years ago there was a sudden supercharged spike of carbon dioxide that accelerated the greenhouse effect.
Scientists already knew this "thermal event" happened but are not sure what caused it. Perhaps massive releases of methane from the ocean, the continent-sized burning of trees, numerous volcanic eruptions.
Many specialists figured that while the rest of the world got really hot, the polar regions were still comfortably cooler, maybe about 52 degrees Fahrenheit.
"It's the first time we've looked at the Arctic, and man, it was a big surprise to us," said study co-author Kathryn Moran, an oceanographer at the University of Rhode Island. "It's a new look to how the Earth can respond to these peaks in carbon dioxide."
It's enough to make Santa Claus break into a sweat.
The 74-degree temperature, based on core samples that act as a climatic time capsule, was probably the year-round average, but because data is so limited it also might be just the summertime average, researchers said.
What's troubling is that this hints that future projections for warming, several degrees over the next century, may be on the low end, said the study's lead author Appy Sluijs of the Institute of Environmental Biology at Utrecht University in the Netherlands.
Also it shows that what happened 55 million years ago was proof that too much carbon dioxide -- more than four times current levels -- can cause global warming, said another co-author Henk Brinkhuis at Utrecht University.
Purdue University atmospheric sciences professor Gabriel Bowen, who was not part of the team, praised the work and said it showed that "there are tipping points in our (climate) system that can throw us to these conditions."
And the new research also gave scientists the idea that a simple fern may have helped pull Earth from a hothouse to an icehouse by sucking up massive amounts of carbon dioxide. Unfortunately, this natural solution to global warming was not exactly quick: It took about a million years.
With all that heat and massive freshwater lakes forming in the Arctic, a fern called Azolla started growing and growing. Azolla, still found in warm regions today, grew so deep, so wide that eventually it started sucking up carbon dioxide, Mr. Brinkhuis theorized. And that helped put the cool back in the Arctic.
Mr. Bowen said he has a hard time accepting that part of the research, but Mr. Brinkhuis said the studies show tons upon tons of thick mats of Azolla covered the Arctic and moved south.
"This could actually contribute to push the world to a cooling mode," Mr. Brinkhuis said, but only after it got hotter first and then it would take at least 800,000 years to cool back down. It's not something to look forward to, he said.

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Wasn't the Arctic farther south 55 million years ago?

We better cut back on our CO2 emmisions. Imagine what it'd be like in Arizona. Talk about an endless summer.

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You don't need a weatherman to know which way the wind blows - Robert A. Zimmerman

Depends on your point of reference. The Artic is the top of the world and that has not changed, but the land mass has. For example, the giant Prudhoe bay Oil Field on the North Slope was deposited at a time when that land mass was roughly where Dallas is now.

The movment of the land masses (continental drift) is a prime factor in the comings and goings of ice ages. I can't remeber which way it goes without looking it up, but when you have land at the poles (continental glaciation as opposed to an ice cap) it triggers melting. Or the opposite.... Need to look it up or ask my geologist buddies. They always crack up when they see global warming stories on TV....

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MB-less

Ahhhh, Wikipedia to the rescue!!!

http://en.wikipedia.org/wiki/Ice_age#Causes_of_ice_ages

The article on ice ages indicates that land mass at the poles is an important factor in ice ages.

Sholin

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