Global Model (2)

The water vapor feedback

In the simulation below, choose 2020, Fluxes, and Play.

Note that so far, the H₂O concentration slider has remained grayed out with a constant value. But since evaporation is a function of temperature, the water vapor concentration should also vary.

Increase the CO₂ concentration to 600 ppm then click Play.

Click on the atmosphere to zoom in to the molecular scale and observe what happens if you switch the Water vapor feedback on and off.

Also observe how the concentration of water vapor (value in ppm) and the percentage of greenhouse effect vary.