I agree.

The effects of a sudden release of methane are set out also in this article.


KILLER IN OUR MIDST
Methane Catastrophes in Earth's Past and Near Future
[link to www.killerinourmidst.com] [link to www.dcn.davis.ca.us] [link to www.kor.dk]

"Though this methane would quickly be oxidized -- to carbon dioxide -- in the atmosphere, even its short-term presence would deliver a sudden and stunning jolt of heat to the planet. The derivative carbon dioxide would maintain much of that heat for several centuries, or even millennia.

A methane catastrophe, therefore, is an abrupt surge of greenhouse gas that could rival or exceed the carbon dioxide warming of the planet. It can potentially overwhelm the natural heat regulatory system of the Earth, which operates in a much more gradual way, and on a much more protracted time scale. The quantity of methane that could be released is so massive there is no remedial action that people will be able to take to mitigate it except in the most superficial way. Once a methane catastrophe begins, there will be major consequences for the planet and its inhabitants, human and other, and we will be able to do little except wait it out. Methane, in a very real sense, is the joker in the deck of global warming."