02 Jun '12, 4am

400 PPM Carbon Dioxide Concentrations Breach The Arctic

400 PPM Carbon Dioxide Concentrations Breach The Arctic

There's a saying that trouble comes in threes. Earlier this week, the International Energy Administration announced that emissions reached a record high last year , increasing by 1 Gt worldwide. At the Bonn climate talks, experts have warned that the window to curb a global temperature rise of more than 2 degrees is swiftly drawing to a close. To cap it off, NOAA released the news that carbon dioxide levels have reached a new milestone this spring, tipping the scales over 400 ppm, a concentration the world hasn't seen in the last 800,000 years . Scientists are seeing these high concentrations at their northernmost stations in the Arctic. Remote sites measure the gas in Alaska, Canada, Iceland, Finland, Norway, and also an island in the North Pacific, Mauna Loa, which has been recording ambient CO 2 concentrations since 1959 (and produced the now-famous Keeling curve ). The...

Full article: http://www.desmogblog.com/400-ppm-carbon-dioxide-concentr...

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