Seasonal Changes in Boundary-Layer Flow Over a Forested Escarpment Measured by an Uncrewed Aircraft System

• DOI: 10.1007/s10546-022-00743-4
• Publication Date: 2022-09-01T09:04:12Z
• Authors: Kjell zum Berge; Annika Gaiser; Hermann Knaus; Andreas Platis; Jens Bange
• Keywords: Escarpment

Abstract The uncrewed airborne measurement platform MASC-3 (Multi-Purpose Airborne Sensor Carrier) is used to measure the influence of a forested escarpment with differing leaf area indices ( LAI ) onto wind field. Data from flight legs between 30 and 200 m above ground uphill (westerly) during summer (July–September) winter (October–March) seasons 2018 2021 are analyzed. Compared low value , it found that mean speed acceleration stronger for high values turbulence enhanced in lee trees lowest 20–60 ground. During inclination angle more clearly defined into an upward motion slope downward plateau. results dataset fits well theoretical analytical models established 1970s 1980s.