The Earth’s climate will enter a new “permanent reality” from next year when concentrations of CO2 in the atmosphere are likely to pass a historic milestone, the head of the UN’s weather agency has warned.
The record concentrations of CO2 in the atmosphere were up 43% since pre-industrial times, said the World Meteorological Organization (WMO), prompting its secretary general Michel Jarraud to say immediate action was needed to cut CO2 emissions.
The WMO’s latest greenhouse gas bulletin comes just three weeks before world leaders including Barack Obama, Xi Jinping and David Cameron meet in Paris in a bid to reach a new deal on cutting emissions.
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