Computational modeling and lidar scanning data of the atmospheric flow over a double-ridge (Perdigao) were used to study a 24-hour period on 14-15 May 2017 with a maximum wind speed of more than 6 ms~(-1). An influence of the stratification was observed throughout most of the time, in the form of a lee-wave triggered by the topography or flow separation further downstream of the ridge. The good agreement between the results obtained by lidar scanning and computational modeling increases our confidence in the use of either of these two techniques. See corresponding video at doi.org/10.11583/DTU.7863482.
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