[environment] The Great Global Warming Swindle [politics] (445)

237 Name: Anonymous Scientist : 2007-09-28 18:53 ID:Heaven

>>236

The ice core samples are not all that reliable:

http://www.canada.com/nationalpost/news/story.html?id=25526754-e53a-4899-84af-5d9089a5dcb6

Quoting the important part:

Ice, the IPCC believes, precisely preserves the ancient air, allowing for a precise reconstruction of the ancient atmosphere. For this to be true, no component of the trapped air can escape from the ice. Neither can the ice ever become liquid. Neither can the various gases within air ever combine or separate.

This perfectly closed system, frozen in time, is a fantasy. "Liquid water is common in polar snow and ice, even at temperatures as low as -72C," Dr. Jaworowski explains, "and we also know that in cold water, CO2 is 70 times more soluble than nitrogen and 30 times more soluble than oxygen, guaranteeing that the proportions of the various gases that remain in the trapped, ancient air will change. Moreover, under the extreme pressure that deep ice is subjected to -- 320 bars, or more than 300 times normal atmospheric pressure -- high levels of CO2 get squeezed out of ancient air."

Because of these various properties in ancient air, one would expect that, over time, ice cores that started off with high levels of CO2 would become depleted of excess CO2, leaving a fairly uniform base level of CO2 behind. In fact, this is exactly what the ice cores show.

"According to the ice-core samples, CO2 levels vary little over time," Dr. Jaworowski sates. "The ice core data from the Taylor Dome in Antarctica shows almost no change in the level of atmospheric CO2 over the last 7,000 to 8,000 years -- it varied between 260 parts per million and 264 parts per million.

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