The oceans control the background rate of energy flow from ocean to air via The Hot Water Bottle Effect and it is the energy flow from ocean to air (supplemented to a miniscule extent by the greenhouse effect) that drives the rate of evaporation by creating
varying temperature differentials between sea surface and air at the surface.
Not exact matches
As Houghton and Hansen have both pointed out, we are looking for a small
differential in an ill - defined
temperature which is very difficult to measure accurately anywhere and which
varies naturally over time, both randomly and systematically.
However, satellite records, such as the RSS
temperature trends at
varying altitudes, agree with the radiosondes that the warming
differential is not occurring: they show that not only absolute
temperatures but also warming rates decline with altitude.