[ShAiOnEiX]

Originally Posted by aperson

Sure maybe you can cite your sources on CO2 (and other GHG) levels during the Triassic-Cretaceous (or whatever the "dinosaur age" means to you, that's not really a relevant stratigraphic era) and maybe some other relevant geologic periods as well like the Paleocene-Eocene Thermal Maximum or the end-Permian.

Also it'd be nice to see some sources demonstrating that none of our concentration pathways could reach those numbers. Preferably you could use some sources from IPCC's AR5 since it is the largest consensus policymaking project that includes representative concentration pathways for GHG concentrations by the end of the 21st century. If you want to be exciting and use the Shared Socioeconomic Pathway models that will be used for IPCC's AR6 as well, those are pretty reputable!

Jurassic period Carbon levels were around 1900ppm if that narrows it down for you at our current state it's around 400ppm. I'm sure you can find the data since you seem to highly knowledgeable in this field. Many reputable scientists have claimed that high carbon levels are not a main contributor for climate change.