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RISOn the Transfer of Momentum by Trapped Lee Waves: Case of the IOP 3 of PYREX
Publisher: American Meteorological Society
Abstract: The airplane data collected between 4 and 12 km above the Pyrénées during the intensive observation period (IOP) 3 of the Pyrénées Experiment (PYREX) are analyzed again. A spectral analysis of the velocity and potential ...
Numerical Simulation of Flow Diversion around the Pyrenees: A Tramontana Case Study
Publisher: American Meteorological Society
Abstract: The intensive observing period (IOP) 6 of the Pyrenees Experiment (PYREX) has been simulated with a hydrostatic three-dimensional model. The PYREX IOP 6 was devoted to the observation of a regional wind, the tramontana, ...
The Impact of Diurnal Cycle on a Low-Froude Number Flow Observed during the PYREX Experiment
Publisher: American Meteorological Society
Abstract: The intensive observing period (IOP) 4 of the Pyrenees Experiment (PYREX) has been simulated with a hydrostatic three-dimensional model. The PYREX IOP 4 was devoted to the observation of the orographically generated flow ...
Trapped Lee Waves Observed during PYREX by Constant Volume Balloons: Comparison with Meso-NH Simulations
Publisher: American Meteorological Society
Abstract: The main objective of the present paper is the use of a constant volume balloon (CVB) as a tool to (i) study trapped lee waves and (ii) assess the forecasting capability of a nonhydrostatic numerical model. Then, CVB data ...
Impact of Subgrid-Scale Orography Parameterization on the Simulation of Orographic Flows
Publisher: American Meteorological Society
Abstract: A subgrid-scale orography parameterization based upon the use of an effective roughness length has been implemented in a mesobeta-scale model. The impact of such a parameterization is investigated in the framework of ...