On the origin of near-surface streaks in the neutrally-stratified planetary boundary layer
The dynamics of near-surface streak formation in the neutrallystratified, rotating planetary boundary layer areinvestigated. The purpose of this note is to compare large-eddysimulation results to theoretical predictions suggesting thatstreaks are associated with non-normal mode optimal perturbations...
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| Veröffentlicht in: | Boundary-layer meteorology 2003-08, Vol.108 (2), p.247-256 |
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| container_title | Boundary-layer meteorology |
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| creator | DROBINSKI, Philippe C.FOSTER, Ralph |
| description | The dynamics of near-surface streak formation in the neutrallystratified, rotating planetary boundary layer areinvestigated. The purpose of this note is to compare large-eddysimulation results to theoretical predictions suggesting thatstreaks are associated with non-normal mode optimal perturbations.Streaks are regions near the surface of alternating high and lowspeed fluid organized into nearly linear bands, with horizontalspacing of several hundred metres, oriented up to 30° relativeto the geostrophic wind, that evolve through a continuous cycle ofgeneration, growth, decay and reformation. We find that the earlystages of streak formation and growth are consistent with thelinear theory.[PUBLICATION ABSTRACT] |
| doi_str_mv | 10.1023/a:1024100125735 |
| format | Article |
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| issn | 0006-8314 1573-1472 |
| language | eng |
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| subjects | Boundary layers Convection, turbulence, diffusion. Boundary layer structure and dynamics Earth, ocean, space Exact sciences and technology External geophysics Meteorology |
| title | On the origin of near-surface streaks in the neutrally-stratified planetary boundary layer |
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