There are always volcanic vents emitting their superheated streams. We only hear of the volcanoes that blow their tops. Even the deep sea vents seldom make it to the upper levels as hot water because of something called or related to the "thermo-haline column". …
I think that the idea the earth's heat budget merely balances the insolation (direct solar heating) is going to take a nose dive soon. NASA JPL are half way through a study of the Arctic's permafrost carbon liabilities. That can be kicked out of bounds.
If you look at the supercyclones that form quite regularly in the southern hemisphere:
…you may one day be able to match them with volcanic activity. (If the nutters in charge of archiving volcanic activity ever pull their fingers out of the ring.)
As of 06:00 on Wednesday 12 June 2013 GMT:
…there is a supercyclone on the coast of Antarctica covering the longitudes 40 to 100 E. This has grown so large due to heat supplied by some volcanic activity. It is easy to imagine any atmospheric pollutants caught up in it will pretty soon turn into mere ions if I am correct.
Thus perisheth all climatological data for the moment.
One of the Lows that it devolves into becomes a small black mass of precipitate by Saturday noon and dissipates on the continent. A sure sign of a medium sized quake. And there have been few enough of them over the last few days.
This will be a short range series from the Fijian Triangle to the Fijian Triangle all on the list from the same day if I know what I am talking about. I have no idea what magnitudes it might contain. It definitely does dissipate on the shore of Antarctica yet the remains do not dissipate, they bounce off "tornado like". Interesting behaviour for so small a Low and one so poorly supported.