>sedimentary ocean methane release http://en.wikipedia.org/wiki/Clathrate_gun_hypothesis http://en.wikipedia.org/wiki/Clathrate_gun_hypothesis >While it may b

>sedimentary ocean methane release http://en.wikipedia.org/wiki/Clathrate_gun_hypothesis http://en.wikipedia.org/wiki/Clathrate_gun_hypothesis >While it may be important on the millennial timescales, it is no longer considered relevant for the near future climate change: the IPCC Sixth Assessment Report states "It is very unlikely that gas clathrates (mostly methane) in deeper terrestrial permafrost and subsea clathrates will lead to a detectable departure from the emissions trajectory during this century".