Ice Cores and Climate Change

Paula Urwin alerted me to this shocking quote from a 2014 article in the British Antarctic Survey, titled ‘Ice Cores and Climate Change‘:

“Measurements from older ice cores confirm that both the magnitude and rate of the recent increase are almost certainly unprecedented over the last 800,000 years. The fastest large natural increase measured in older ice cores is around 20ppmv (parts per million by volume) in 1,000 years (a rate seen during Earth’s emergence from the last ice age around 12,000 years ago). CO2 concentration increased by the same amount, 20ppmv, in the last 10 years!

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