12 May '13, 2pm

Last time CO2 hit 400 ppm, temperature was 8C warmer, seas 40m higher than today

Last time CO2 hit 400 ppm, temperature was 8C warmer, seas 40m higher than today

Last time CO2 hit 400 ppm, temperature was 8C warmer, seas 40m higher than today Damian Carrington, The Guardian May 12, 2013 print Lake sediments recorded the climate of the Arctic during the last period when CO2 levels were as high as today The future of a globally warmed world has been revealed in a remote meteorite crater in Siberia, where lake sediments recorded the strikingly balmy climate of the Arctic during the last period when greenhouse gas levels were as high as today. Unchecked burning of fossil fuels has driven carbon dioxide to levels not seen for 3m years when, the sediments show, temperatures were 8C higher than today, lush forests covered the tundra and sea levels were up to 40m higher than today. "It's like deja vu," said Prof Julie Brigham-Grette, at the University of Massachusetts Amherst, who led the new research analysing a core of sediment to see wh...

Full article: http://news.mongabay.com/2013/0512-gen-lake-el-gygytgyn.html

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