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EcoAlert: Mysterious Hot Spots of the Ice Age --"CO2 Tipping Points Caused Abrupt Paleoclimate Temperature Shifts"

19 Jun 2017, 15:56 UTC
EcoAlert: Mysterious Hot Spots of the Ice Age --"CO2 Tipping Points Caused Abrupt Paleoclimate Temperature Shifts"
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"This does not necessarily mean that a similar response would happen in the future with increasing CO2 levels, since the boundary conditions are different from the ice age," added by Professor Gerrit Lohmann, leader of the Paleoclimate Dynamics group at the Alfred Wegener Institute. "Nevertheless, our study shows that climate models have the ability of simulating abrupt changes by gradual forcing as seen in paleoclimate data."
Scientists believe they have discovered the reason behind mysterious changes to the climate that saw temperatures fluctuate by up to 15°C within just a few decades during the ice age periods. In a new study published today, researchers show that rising levels of CO2 could have reached a tipping point during these glacial periods, triggering a series of chain events that caused temperatures to rise abruptly.
The findings, which have been published in the journal Nature Geoscience, add to mounting evidence suggesting that gradual changes such as a rising CO2 levels can lead to sudden surprises in our climate, which can be triggered when a certain threshold is crossed.
Previous studies have shown that an essential part of the natural variability of our climate during glacial times is the repeated occurrence of abrupt climate ...

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