Studies of Atmospheric Waves and Turbulence Processes Using Numerical Modeling and Atmospheric Measurements.

摘要

We find stratification dominates the dynamics in the edge regions of shear layers. Spectral slopes consistent with predictions by Bolgiano (1959) for stratified turbulence are observed during the initial stages of the shear-flow evolution. Only minimal modification to our existing Boussinesq code was required o conduct the gravity-wave breaking simulations. Propagation of the wave during turbulence evolution results in a trail of mixed fluid; unlike the turbulent shear layer which concentrates mixing in a fixed layer Additional funding is required to conduct higher-Re wave-breaking solutions and to further diagnose differences between the wave breaking and shear simulations. Dr. Werne presented work at the European Geophysical Society and the Monterey DoD HPCMO meeting.