Influences on the Height of the Stable Boundary Layer as seen in Large-Eddy Simulations
Numerical weather prediction (NWP) models and atmospheric dispersion models rely on parameterizations of planetary boundary layer height. In the case of a stable boundary layer, errors in boundary layer height estimation can result in gross errors in boundary-layer evolution and in prediction of turbulent mixing within the boundary layer. We use large-eddy simulations (LES) of moderately stable boundary layers to characterize the effects of various physical processes on stable boundary layers. The stable boundary layer height is assumed to be a function of surface friction velocity, geostrophic wind, Monin-Obukhov length, and the strength of the temperature inversion atop the stable boundary layer. This temperature inversion induces gravity waves with a frequency determined by the strength of the temperature inversion.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 15014036
- Report Number(s):
- UCRL-PROC-203266; TRN: US200803%%934
- Resource Relation:
- Conference: Presented at: 16th Symposium on Boundary Layers and Turbulence, Portland, ME, United States, Aug 09 - Aug 13, 2003
- Country of Publication:
- United States
- Language:
- English
Similar Records
Large Eddies Regulate Turbulent Flux Gradients in Coupled Stable Boundary Layers
Final Report for Project: Impacts of stratification and non-equilibrium winds and waves on hub-height winds