How does the subsidence of dry air affect evaporation rate? How does wind speed affect evaporation rate?
I have read twice your question without really understanding. The third time I came to think that “evaporation rate” is the evaporation rate of sea water at the surface. If that is correct then a subsidence of dry air, i.e. the sinking of air at a low relative humidity level, will – of course – increase evaporation. Likewise, the higher the wind speed, the greater the evaporation. This is because, right over the surface of the water, some molecules mix with the air until it is 100 percent saturated. More evaporation can’t occur until that air is replaced by new air and the faster it happens, and the drier the air is, the faster evaporation occurs. Of course, since warmer air can contain more moisture than cold one, the warmer the more evaporation too. But I don’t think that the adiabatic warming of a subsidence has much to say for the air right above the sea. A subsidence, as it happens in a high pressure, is something that happens very slowly and I can’t imagine it has any effect of t
