Although methane does not survive for long within our atmosphere, it can trap more than 100x the heat for the same volume. https://climate.mit.edu/ask-mit/why-

Although methane does not survive for long within our atmosphere, it can trap more than 100x the heat for the same volume. https://climate.mit.edu/ask-mit/why-do-we-compare-methane-carbon-dioxide-over-100-year-timeframe-are-we-underrating https://climate.mit.edu/ask-mit/why-do-we-compare-methane-ca... Note that this article points out the potential contribution of the methane to climate change, but this would not be anthropogenic climate change as the gas is already in its natural form, just being released from underground.