Wave-Turbulence Interaction at an Inversion Layer
Final rept. 24 Jun-23 Oct 1991
ARIZONA STATE UNIV TEMPE
Pagination or Media Count:
The research has dealt with the interaction of turbulence and stratification in a three layer system and the nature of shear-free turbulence near sharp interfaces. Summaries of the research projects are given in the final report. The structure of turbulence within and near inversion layers as well as the motion within the interior of an outer stratified layer are of interest in understanding the communication between stratified and turbulent layers. Such an understanding is imperative in predicting the penetration of a turbulent layer into a contiguous stratified region entrainment phenomena and the dispersion of species in the turbulent layer. A stunning example in this context is the fluid motion in the lower atmosphere generated by convective turbulence. Here the stratification consists of three layers the bottom layer near the surface is well mixed by convective turbulence and the outer weakly stratified layer is separated from the bottom layer by a strong, stable, somewhat thin layer called the inversion layer. The height of the bottom layer is referred to as the mixing height.