Description: Das Projekt "CIRCVAL - Thermally forced circulations in an Alpine valley" wird vom Umweltbundesamt gefördert und von Universität Wien, Institut für Meteorologie und Geophysik durchgeführt. Lower air volume in valleys than in adjacent plains together with diabatic heating or cooling induces an along-valley temperature and pressure gradient which drives the valley wind. This phenomenon will be quantified for the Mesolcina valley in the Swiss Alps. The method we develop is based on high resolution topography data. From this information the temperature and pressure tendency can be derived for a period with sensible heat flux at the surface. To calculate the wind field, the circulation theorem will be applied. The results of the model runs will be compared to measured data from the field experiment VOTALP (Vertical Ozone Transport in the Alps). In this campaign ground based and airborne instruments collected data of the atmospheric conditions in the valley and the synoptic windfield above.
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Origin: /Bund/UBA/UFORDAT
Tags: Luftdruck ? Ozon ? Windgeschwindigkeit ? Meteorologischer Parameter ? Meteorologie ? Wind ? Schweiz ? Luftbewegung ? Lufttemperatur ? Topographie ? Wetterdaten ? Daten ? Klimamodell ? Luftkühlung ? Messdaten ? Prognosemodell ? Alpen ? Datenerhebung ? Freilandversuch ? Heizung ? Wetter ? Tal ? Windbedingte Erscheinung ? Windrichtung ?
License: cc-by-nc-nd/4.0
Language: Englisch/English
Time ranges: 1999-09-01 - 2025-03-31
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