In a preceding paper… the author attempted a computation of the evaporation from the sea on the basis of the assumptions that: 1. A boundary layer exists next to the surface within which transport of water vapor takes place by ordinary diffusion. 2. Above the boundary layer the transport of water vapor takes place by eddy conductivity. 3. The eddy conductivity, A, is, according to laboratory results, a linear function of the altitude above the sea and depends upon the roughness of the surface….
Sverdrup, H. U.. 1937. "On the evaporation from the oceans." Journal of Marine Research 1, (1). https://elischolar.library.yale.edu/journal_of_marine_research/515