Interaction Between Waves and Turbulence Within the Nocturnal Boundary Layer

Abstract The presence of waves is proven to be ubiquitous within nocturnal stable boundary layers over complex terrain, where turbulence in a continuous, although weak, state activity. typical approach based on Reynolds decomposition unable disaggregate from contributions, thus hiding any information about the production/destruction energy injected/subtracted by wave motion. We adopt triple-decomposition mean, wave, and contributions near-surface boundary-layer flows, with aim unveiling role motion as source and/or sink kinetic potential energies respective explicit budgets. By exploring balance between buoyancy (driving waves) shear turbulence), simple interpretation paradigm introduced distinguish two layers, namely near-ground far-ground sublayer, estimating can significantly feed or fed wave. To prove this paradigm, valley flow used case study detail motions budgets sublayers. From dataset, are calculated, relying variance–covariance analysis further comprehend each sublayer. With investigation, we propose scheme capture interpret extent interaction layers.