abstract:Arctic methane release is the release of methane from seas and soils in permafrost regions of the Arctic. While a long-term natural process, it may be exacerbated by global warming.
Onebigunknown is the stage at whichdangeroustipping points would be reached that lead tofurtherwarming - for example the releaseofmethanehydrate depositsinthe Arctic.
"There is quite a lot of suppression and non-discussion of issues that are difficult, and one of those is in fact methane, " he said, recalling a reluctance on the part of at least one senior scientists involved in the Arctic Climate Impact Assessment to discuss the impact that a methanerelease might have.