They claimed a positive feedback occurred as follows: CO2 increases temperature,
which increases evaporation and increased water vapor as a greenhouse gas causes more temperature increase.
Are you really trying to say that the dominant effect of a warmer atmosphere is to
increase evaporation so much it cools the ocean?
For instance, unlike traditional surface storage solutions, conservation, efficiency, groundwater storage, and western water markets are not vulnerable to
increased evaporation as temperatures rise.
But when lashes are too long, they no longer trap air and instead funnel airflow onto the eye,
likely increasing evaporation and particle deposition.
Now of
course increased evaporation also means increased precipitation, but this tends to fall prematurely over the source of the evaporation — the oceans.
Temperature
rise increases evaporation and decreases runoff, but has been found to cause an increased rate of runoff in winter and a decrease in spring.
Drought is expected to increase in frequency and severity in the future as a result of climate change, mainly as a consequence of decreases in regional precipitation but also because of
increasing evaporation driven by global warming1 — 3.
Can
not increase evaporation in the sea, but extra water available on land; especially in dry countries as Australia = better climate.
Warmer
air increases the evaporation rate of water, and for every degree Celsius increase in temperature, a parcel of air can hold 7 percent more water.
Putting additional water on your skin or an object can also
help increase the evaporation rate, which is why some people put wet bandanas around their necks when exercising.
Ian, looking at the projections it certainly appears that
increased evaporation plays a bigger role than decreases in rainfall, but of course the two interact, and the reduction in streamflow is larger again (commonly by a factor of three) than the reduction in rainfall net of evaporation.
Because in many places it's absorbed in the first few microns of the (ocean) surface while most shortwave is absorbed at a depth of meters, it can
produce increased evaporation without increasing the temperature (except for within a few microns of the surface).