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Evidence of “tipping points” turning climate change from gradual to rapid

Ice core samples in Greenland have shown that during the last glacial period, temperatures periodically shot up by as much as 10° C (18° F) in a matter of decades, but it wasn’t clear why that was the case. A study by researchers at the Alfred Wegener Institute and the University of Cardiff has shed some more light on this phenomena, known as Dansgaard-Oeschger events, using a computer model that simulates the relationship between the atmosphere, ocean currents and sea ice levels.

The team found that a high concentration of CO2 in the atmosphere was the likely suspect for these sudden warming events. The CO2 levels didn’t have to rise quickly either: after a period of slow but constant growth, the climate can reach a crucial tipping point, setting off a chain reaction that results in temperature spikes.

Source: Evidence of “tipping points” turning climate change from gradual to rapid

Just the sort of thing Guy McPherson has been warning us all about…

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