Abstract
Abstract An incompressible, mesoscale model is used to estimate wave drag (WD) profiles over inhomogeneous 2D terrain. The goal is twofold: to evaluate the WD based on the model's fields and to analyze the atmospheric boundary layer (ABL) response to wave breaking. The model employs a simplified higher-order closure scheme for turbulent fluxes. A sponge layer mimics a radiative upper boundary condition (BC). Due to the no-slip lower BC for dissipative flows, the Eliassen-Palm theorem is not fulfilled and WD is generally not constant with height. Within the lower troposphere, the model's mean WD values compare to those from theory and other simulations. Above the ABL, where no physical processes dissipate waves, WD attenuates with height to roughly one-third of its theoretical value. This is mainly due to numerical dissipation of the used first-order advection scheme. However, the acceleration identified with the wave pattern reduction is small compared to governing accelerations. Two simulation sets are p...
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