It turns into CO2. So all that happens is an initial spike of a more potent GHG turning into a baseline GHG. And the half-life is a ~decade, with constant repl

It turns into CO2. So all that happens is an initial spike of a more potent GHG turning into a baseline GHG. And the half-life is a ~decade, with constant replenishment that's enough to have a significant effect that the same carbon emitted as CO2 would not have.