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A Two-Day Case Study: Comparison of Turbulence Data from an Unmanned Aircraft System with a Model Chain for Complex Terrain

Berge, Kjell zum; Schoen, Martin; Mauz, Moritz; Platis, Andreas; Kesteren, Bram van; Leukauf, Daniel; El Bahlouli, Asmae; Letzgus, Patrick; Knaus, Hermann; Bange, Jens

Abstract:
The airborne measurement platform MASC-3 (Multi-Purpose Airborne Sensor Carrier) is used for measurements over a forested escarpment in the Swabian Alps to evaluate the wind field. Data from flight legs between 20 and 200 m above the ground on two consecutive days with uphill (westerly) flow in September 2018 are analyzed. In the lowest 140 m above the ground a speed-up is found with increased turbulence and changes in wind direction directly over the escarpment, whereas in the lowest 20 to 50 m above the ground a deceleration of the flow is measured. Additionally, simulation results from a numerical model chain based on the Weather Research and Forecasting (WRF) model and an OpenFOAM (Open Source Field Operation and Manipulation) model, developed for complex terrain, are compared to the data captured by MASC-3. The models and measurements compare well for the mean wind speed and inclination angle.

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Verlagsausgabe §
DOI: 10.5445/IR/1000131426
Veröffentlicht am 16.04.2021
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung - Atmosphärische Umweltforschung (IMK-IFU)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 0006-8314, 1573-1472
KITopen-ID: 1000131426
Erschienen in Boundary-Layer Meteorology
Verlag Springer
Schlagwörter Complex terrain; Turbulence measurement; Unmanned aircraft system; Wind energy
Nachgewiesen in Scopus
Web of Science
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