It's hard for me to pick out which value is meant, because a lot of the conversation includes methane-producing microbes making even more of it as permafrost th

It's hard for me to pick out which value is meant, because a lot of the conversation includes methane-producing microbes making even more of it as permafrost thaws. So I think it means carbon, but that carbon could potentially be turned into methane as we go. https://physicstoday.scitation.org/do/10.1063/pt.6.2.20220614a/full/ https://physicstoday.scitation.org/do/10.1063/pt.6.2.2022061...