Recorded presentation5B.4
High resolution Unified Model simulations of T-REX IOP-6, comparison with observations
Simon Vosper, Met Office, Exeter, United Kingdom; and P. Sheridan
Probably the most dramatic wave/rotor event during the recent T-REX field campaign in the Sierra Nevada mountains, USA, occurred during IOP-6. Observations indicate regions/periods of intense near-surface flow and turbulence and strong spatial and temporal variability, making this event a challenge for forecasting models. High resolution (333 m) nested simulations of the IOP using the Met Office Unified Model (UM) have been performed, and indicate a highly structured flow aloft and near the surface, including downslope/gap winds and periodic/propagating features. A combination of dense near-surface instrumentation, observations of the wave field aloft and three-dimensional remote sensing are used to investigate the extent to which the simulated flow structure is representative of the real flow. Recorded presentation
Session 5B, Terrain-induced Rotor Experiment(T-REX) I
Tuesday, 12 August 2008, 8:30 AM-10:00 AM, Fitzsimmons
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