31 May '12, 3pm

Alarming milestone: C02 levels hit 400 parts per million across the Arctic #Arctic #climate

31 May 2012: C02 Milestone Reached As Levels Hit 400 PPM Across Arctic For the first time in at least 800,000 years, atmospheric concentrations of carbon dioxide have crossed the threshold of 400 parts per million (ppm) , with stations across the Arctic recording these Linking Weird Weather to Rapid Warming of the Arctic The loss of Arctic summer sea ice and the rapid warming of the Far North are altering the jet stream. As Jennifer Francis writes, scientists are now just beginning to understand how these shifts may be increasing the likelihood of extreme weather. READ THE e360 REPORT record levels, the Associated Press reports. Global concentrations have hit 395 ppm, but in recent months levels of carbon dioxide in the atmosphere surpassed 400 ppm in the Arctic because of the lack of CO2-absorbing vegetation in the Far North in winter and spring. Pre-industrial levels of ...

Full article: http://e360.yale.edu/digest/c02_milestone_reached__as_lev...

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