One of the dumbest arguments of all times. It goes like this – CO2 is a forcing and H2O is a feedback. CO2 has a long residency time, H2O doesn’t. CO2 controls the climate by feeding back H2O . …. Blah blah blah. This argument forms the basis of global
stupidity warming theory, but is fundamentally flawed.
- You could never get water vapor concentration down to CO2 levels. There will always be more H2O resident in the atmosphere than CO2.
- Humans introduce huge amounts of H2O into the atmosphere through irrigation, artificial lakes, burning fossil fuels, jet engines, etc.
- If positive feedback was actually a problem, anthropogenic H2O would be causing more feedback than anthropogenic CO2. Does the climate care which greenhouse gas molecule is making things hotter?