Modification of k-ε Model for Sensible Heat and Momentum Flux Reconstruction from Surface Temperature Data

We present a modified k-ε model with set of wall-functions suitable for reconstruction sensible heat and momentum fluxes from the observations data (e.g., surface temperature evolution during diurnal cycle). The modification takes into account stability buoyancy effects in Reynolds stress parametrization which affects turbulence production turbulent flux. single-cell single-column versions are presented. is tested based on CASES-99 dry ABL. It shown that presented improves predictions flux magnitude leads to faster onset daytime instability, compared non-modified its scale-limited Monin-Obukhov similarity theory.