IFS Documentation front page

I Observations
II Assimilation
III Dynamics
IV Physics
V Ensemble
VI Technical
VII Waves

Part IV: Physical processes

CHAPTER 3 Turbulent diffusion and interactions with the surface

Table of contents

3.1 Introduction

3.2 The surface layer

3.2.1 Surface fluxes

3.2.2 Stability functions

3.2.3 Computation of the Obukhov length

3.2.4 Roughness lengths

3.3 The exchange coefficients above the surface layer

3.3.1 General

3.3.2 The exchange coefficients

3.4 Solution of the vertical diffusion equatioNS

3.5 The skin temperature

3.6 Tendency calculations and energy dissipation

3.7 Shorter time step in the vertical diffusion scheme

3.8 Diagnostic computations for postprocessing

3.8.1 Diagnostic boundary layer height

3.8.2 Wind at 10 m level

3.8.3 Temperature and humidity at the 2 m level

3.8.4 Wind gusts

3.9 Code