On extending the flux-profile similarity theory to include quasi-homogeneous conditions in the marine atmospheric surface layer

摘要

In order to apply Monin-Obukhov similarity theory to estimate the profiles of mean quantities and surface fluxes from bulk meteorological parameters, the assumptions of homogeneity and stationarity must be valid. Unfortunately, in coastal zones as well as many other regions of interest, these assumptions are often violated. In this paper, an extension to the theory is presented that considers systematically varying state variables. Along-wind variations of windspeed, atmospheric stratification, androughness are examined with respect to their relative importance to momentum flux divergence, and the drag coefficient is shown to be systematically lower in coastal zones. For profiles of scalars, an analysis of the set of quasi-homogeneous terms is only speculated, and the relative importance for the terms will strongly depend on which scalar is of interest.