Atmospheric methane concentrations are rising faster since 2007.
An international group of researchers led by LSCE (CEA-CNRS-UVSQ) has published a thorough budget of methane sources and sinks* over the last decade in the Earth System Science Data journal, complemented by en editorial in Environmental Research Letters, both to be published on December 12 2016. These studies show that none of the scenarios of the 5th IPPC1 report correspond to the observed increase in methane concentrations.
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