CO2's share of the greenhouse effect is pretty significant (about 20% afaik), and the other gases wouldn't just fill the gap. So it would get quite a bit colder.
AFAIK without any greenhouse gasses the temperature would be about -18 °C so 20% of about 45 is 9° C which is a drop from +25 to about +16 which is quite cold but not exactly humanity ending cold, right?
CO2's share of the greenhouse effect is pretty significant (about 20% afaik), and the other gases wouldn't just fill the gap. So it would get quite a bit colder.
AFAIK without any greenhouse gasses the temperature would be about -18 °C so 20% of about 45 is 9° C which is a drop from +25 to about +16 which is quite cold but not exactly humanity ending cold, right?
Apparently it's a bit more complicated than that.