Projecte llegit
Títol: Analysis of the severe strong wind event (torb) on December 2000 in the eastern Pyrenees.
Director/a: MAZÓN BUESO, JORDI
Departament: FIS
Títol: Analysis of the severe strong wind event (torb) on December 2000 in the eastern Pyrenees.
Data inici oferta: 01-02-2019 Data finalització oferta: 01-10-2019
Estudis d'assignació del projecte:
DG ENG AERO/TELEMÀT- GR ENG SIST AEROESP
| Tipus: Individual | |
| Lloc de realització: EETAC | |
| Segon director/a (UPC): PINO GONZÁLEZ, DAVID | |
| Paraules clau: | |
| Wind, blizzard, turbulence, mountain waves, simulation, Pyrenees | |
| Descripció del contingut i pla d'activitats: | |
| On December 30th, 2000 a sudden and strong wind storm hit the eastern Pyrenees, causing severe hazardous event called "torb" by locals, causing 11 fatalities. The strong wind lifted snow covering the soil, reducing visibility and causing extreme weather conditions. Orographic features lead to severe turbulence and rotors.
The aim of this proposal is to study weather conditions of this extreme event, regarding turbulences caused by the interaction with orographic features, and possible impact on aeronavigation, such as orographic waves, turbulences and rotors. The method proposed is to analyze this event by using numerical simulation thought WRF model, and recorded data from weather stations located in the region. |
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| Overview (resum en anglès): | |
| On December 30 of the year 2000, a strong and sudden episode of wind hit the Eastern Pyrenees, causing a severe blizzard. The wind lifted the snow that covered the ground, reducing visibility and causing extreme conditions that caused fatalities.
The aim of this proposal is to study the weather conditions of this extreme event. Observations of temperature, precipitation and wind velocity collected by the weather stations of the Servei Meterològic de Catalunya closest to the region where the blizzard occurs are analyzed. In addition, a synoptic analysis has been made to examine the possible causes of the blizzard generated using two models: United Kingdom Meteorological Office Model and Climate Forecast System Reanalysis. Subsequently mountain waves are presented and defined, a specific type of turbulence, given its importance in aviation. Different parameters are also described (the frequency of Brünt Väisälä, the Froude number or the Scorer parameter) that helps to diagnose its appearance. These parameters are obtained in the area under study by using a numerical simulation with the Weather Research and Forecasting mesoscale model. Sections of wind fields and potential temperature for the period of the blizzard are also shown and analyzed. The simulation shows the influence of orographic characteristics on the atmospheric conditions and the stability of the atmosphere and the generation of mountain waves are quantified. |
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