More Global Warming Evidence

Hot off the press from the University of Colorado via – an analysis of 200,000 years of climate evidence from a lake on Baffin Island in the arctic shows that whilst the temperature should be getting cooler due to natural effects it’s actually going the other way:

While environmental changes at the lake over the past millennia have been shown to be tightly linked with natural causes of climate change—like periodic, well-understood wobbles in Earth’s orbit—changes seen in the sediment cores since about 1950 indicate expected climate cooling is being overridden by human activity like greenhouse gas emissions.

The sediments here go way back:

The lake sediment cores go back 80,000 years beyond the oldest reliable ice cores from Greenland and capture the environmental conditions of two previous ice ages and three interglacial periods.

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