Abstract
(1) As a particular case I have considered the thermometric field for the linear variation of the eddy diffusivity, and prepared k0-λ diagram for practical purpose.
(2) To determine the monthly values of the eddy diffusivity, I have taken the simplest formula
It is important to notice that the result does not hold for phase lag. The values of κ are large and decrease with hei ht in summer, and viceversa in winter.
