Well the climate never becomes completely insensitive to further increases in CO2 concetration - lookup the band saturation effect. I wasn't citing a specific

Well the climate never becomes completely insensitive to further increases in CO2 concetration - lookup the band saturation effect. I wasn't citing a specific source, only pointing out that different gases absorb at different wavelengths, some of which (like methane) have potential to absorb much more with increasing concentration. IIRCC there are other factors, like the persistence time in the atmosphere, that make CO2 more worrysome. I took this edx course on climate modeling a few years ago that was fantastic if you want to dig deeper and the professor does cover these topics (which I'm likely butchering) - https://courses.edx.org/courses/UChicagoX/PS280x/2015_T1/course/ https://courses.edx.org/courses/UChicagoX/PS280x/2015_T1/cou...