The IEA may not sure the view of the author that "such an increase would remove habitat for human beings on this planet".
The current https://www.iea.org/publications/scenariosandprojections/ claims that "business as usual" would yield almost 4C by 2100 and 5.5C long term. Not sure how that squares with claim by author or which scenario they were referring to.
The big question I have with many of the scenarios (I think IPCC ones fall into this camp) is how much worse they will get when methane clathrates release is included. I'm not too familiar with the literature, maybe others know how well clathrate release is understood and what contribution it makes under various scenarios.
The current https://www.iea.org/publications/scenariosandprojections/ claims that "business as usual" would yield almost 4C by 2100 and 5.5C long term. Not sure how that squares with claim by author or which scenario they were referring to.
The big question I have with many of the scenarios (I think IPCC ones fall into this camp) is how much worse they will get when methane clathrates release is included. I'm not too familiar with the literature, maybe others know how well clathrate release is understood and what contribution it makes under various scenarios.