Do you deny the logarithmic nature of the GHG effect of CO2?
Nope. In fact I have written about how I resolved my confusion on that point...
Looks like it shouldn’t! So I asked a climate scientist.medium.com
Since Arrhenius, we’ve understood the CO2 effect in degrees C/doubling of CO2.
Arrhenius also predicted that feedbacks would cause an amplification of the effect of CO2.
Given the lack of observation of increased humidity in the biosphere over the past 100 years
Humidity seems to have increased (although something I’ve been wondering about is whether it has increased when expressed as a percentage as is commonly done). See here: