[SunkenCiv]

Thanks Renfield.

The last ice age 13,000 years ago took hold in just one year, more than ten times quicker than previously believed, scientists have warned. Rather than a gradual cooling over a decade, the ice age plunged Europe into the deep freeze, German Research Centre for Geosciences at Potsdam said. Cold, stormy conditions caused by an abrupt shift in atmospheric circulation froze the continent almost instantly during the Younger Dryas less than 13,000 years ago -- a very recent period on a geological scale.

Funny thing, no one seems to have noticed that "more than ten times quicker" suggests that previously, the onset was held to be a short period, say, twenty years. At least one study which found that a large volume of chilly water flowed all at once into the Atlantic came out around ten years ago.

Did A Significant Climate Change Event,
Known As Younger Dryas,
Impact Climate Around The Globe?
ScienceDaily
July 22, 2008

The Younger Dryas event refers to an unexpected rapid cooling of the earth that is known to have lasted about 1,300 years. It coincided with widespread extinctions of species, but, although the event itself is well-documented, scientists are still unclear of whether its impact was felt equally all across the globe.

And prior to perhaps twenty years ago, the "ice ages" were held to have taken centuries, even millennia, to arise.

· join · view topics · view or post blog · bookmark · post new topic ·

[bert]

The conclusion was reached from studying sediments but there was no proximate cause proposed for the observed condition.

[BenLurkin]

Sunspots?

[Fred Nerks]

http://www.iceagenow.com/Global_temperatures_drop_precipitously.htm

Global temperatures drop precipitously
.
Fastest temperature change ever recorded
.
Nearly wipes out 100 Years of Global Warming
____________________________________

..
26 Feb 08 - Excerpt: All four major global temperature tracking outlets (Hadley, NASA’s GISS, UAH, RSS) have released updated data. All show that over the past year, global temperatures have dropped precipitously.
.

World Temperatures according to the Hadley Center for Climate Prediction
Note the steep drop over the last year.

Meteorologist Anthony Watts compiled the results of all the sources. The total amount of cooling ranges from 0.65C up to 0.75C — a value large enough to erase nearly all the global warming recorded over the past 100 years.

All in one year’s time.

For all tracking outlets, it’s the single fastest temperature change every recorded, either up or down.

[SunkenCiv]

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