Decadal trends in atmospheric methane

A study modeling atmospheric chemistry suggests that the renewed rise in atmospheric methane since 2007 could be due to a 7% decrease in the concentration of hydroxyl, which reacts with methane and removes it from the atmosphere, in conjunction with a 25 Tg/yr decrease in methane emissions since 2003; however, the authors demonstrate that decadal trends in methane cannot unambiguously be attributed to specific atmospheric drivers using the current observational record. - Read at PNAS

Article #16-16020: “Ambiguity in the causes for decadal trends in atmospheric methane and hydroxyl,” by Alexander J. Turner, Christian Frankenberg, Paul O. Wennberg, and Daniel J. Jacob.