Project: Investigation of entrainment processes at the top of the atmospheric boundary layer using innovative experimental and numerical techniques
Responsible: Florian Herbort?
Description: The upper animation shows the temporal behaviour of the potential temperature in a vertical cross section for the top of a typical convective boundary layer and a slightly stable stratified free atmosphere across, flowing with a steady speed of 5 m/s. At the transition between the well mixed boundary layer and the free atmosphere strong gradients occur with structures that are strongly variable in space and time. At this transition exchange of the stable stratified air with the well mixed layer below occur leading to a deepening of the boundary layer.
The lower animation shows a 3d-visualization of the same simulation with VAPOR, but only the transition between mixed layer and free atmosphere for the temperature range 303.0 - 305.0 K.
| Model Setup
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| Total domain size (x|y|z): | 3840m x 3840m x 1440m
| | Grid spacing (x|y|z): | 3m x 3m x 3m
| | Number of grid points (x|y|z): | 1280 x 1280 x 480
| | Simulated time: | 1h 56m
| | CPU-time: | 28h 15m
| | Number of CPUs: | 1024
| | Machine/ processor type: | SGI Altix ICE at HLRN / Intel Xeon Gainestown
| | Visualization software: | IDL (top), VAPOR (bottom)
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| Download
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| Video Format | File size
| | Flash (.flv) | 9.8mb | Download (cross section)
| | MPEG (.avi) | 9.8mb | Download (cross section)
| | Flash (.flv) | 10.0mb | Download (3D)
| | MPEG (.avi) | 9.8mb | Download (3D)
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