” Twenty-nine years of measurements show little change in seasonal mean land sector CH4 enhancements, despite an increase in annual mean temperatures.”
“Our results suggest that even the observed short-term temperature sensitivity from the Arctic will have little impact on the global atmospheric CH4 budget in the long term”
http://onlinelibrary.wiley.com/doi/10.1002/2016GL069292/abstract
h/t Gavin Schmidt who notes: “Mainstream assessments have not been expecting much. (Some fringe voices have been vocal though)”