A generalized Ekman layer profile with gradually varying eddy diffusivities


  • Branko Grisogono

    Corresponding author
    1. University of Uppsala, Sweden
    • Department of Meteorology, Uppsala University, Box 516, S-75120 Uppsala, Sweden. (On leave from the Geophysical Institute Andrija Mohorovičić, Faculty of Natural Sciences and Mathematics, University of Zagreb, Croatia.)
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The classical analytical solution for the Ekman layer flow has been generalized by introducing an assigned non-rapidly-varying eddy diffusivity K(z). Asymptotic expressions for the wind components u, v obtained via the WKB method retain the form and, to a large extent, the simplicity of the classical case in which K is kept constant. Three examples of idealized K-profiles are used to compare the numerical, WKB and constant-K solutions for Ekman profiles.