What's even worse is CO2 - induced global warming's positive - feedback assumption relies on
more water vapor entering the air.
As
more water vapor enters the atmosphere, that in turn absorbs more SW radiation, and, as this recent MIT study has shown, we might actually see that we have a seemingly paradoxical effect of the bulk of the warming then being in the SW, even as net LW actually increases with increasing GH gas levels:
But water vapor, unlike CO2, acts as a negative feedback mechanism, too, because as the atmosphere heats and
more water vapor enters the air, we also have more clouds, which reflect heat.
As the temperature rises,
more water vapor enters the atmosphere and multiplies CO2's greenhouse effect; the Intergovernmental Panel on Climate Change notes that water vapor may «approximately double the increase in the greenhouse effect due to the added CO2 alone.»
Not exact matches
So as
more CO2 gets pumped into the atmosphere the temperature rises, which causes
more water to evaporate (as you accurately state), increasing the concentration of
water vapor in the atmosphere — which heats the atmosphere even
more, causing even
more water vapor to
enter the atmosphere.
Water vapor feedback can also amplify the warming effect of other greenhouse gases, such that the warming brought about by increased carbon dioxide allows more water vapor to enter the atmosp
Water vapor feedback can also amplify the warming effect of other greenhouse gases, such that the warming brought about by increased carbon dioxide allows
more water vapor to enter the atmosp
water vapor to
enter the atmosphere.