Exhibit A as to why global warming is likely to proceed in a non-linear manner.  The only good solution to these releases I can see is rapid reversal of the recent global ambient temperature increase.  I understand that methane is a significantly more potent greenhouse gas than is CO2, so burning this methane would actually be an improvement.  Unfortunately, neither capture nor burning in situ appears feasible, although I would be delighted to be shown to be wrong.

"It is not necessary to have hope in order to persevere."