Professor Peter Thorne:

I wish to address to address the Deputy’s reference to 3% reduction. Methane is a flow. It is like turning on and off a tap in a bath with the plughole open. If we reduce methane by 3% per decade, the methane concentrations will decrease by 3% per decade. The reason we need to do that is that the long-term warming of the impact of the methane on the oceans increases over time. That is why you cannot keep methane absolutely stable and keep global warming from increasing. We need slight reductions in methane. However, it is not that it accumulates in the atmosphere forever.