I don't understand. This can't be right. If the water vapor increases 7% for a 1C rise, water vapor being a very potent greenhouse gas, that would make the temperature rise at least another 1C, which would bring 7% more water vapor, which would bring another 1C .... which is a runaway situation. If that was true, then it would have runaway long long ago. So something is wrong here, probably with my own assumptions. Can you correct them?