Variations of the wake height over the Bolund escarpment

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    The here presented results are part of a paper that is submitted and accepted with minor revisions by the Boundary-Layer Meteorology journal. The wake zone behind the escarpment of the Bolund peninsula in the Roskilde Fjord, Denmark, has been investigated with the help of a continuouswave Doppler lidar. The instrument measures the line-of-sight wind speed 390 times per second in highly resolved 7-m tall profiles by rapidly changing the focus distance and beam direction. The profiles reveal the detailed and rapidly changing structure of the wake induced by the Bolund escarpment. The wake grows with distance from the escarpment, with the wake height depending strongly on the wind direction, such that the minimum height appears when the flow is perpendicular to the escarpment. The wake increases by 10% to 70% when the wind direction deviates ± 15 from perpendicular depending on the distance to the edge and to a lesser degree on the method by which the wake height is determined.
    Original languageEnglish
    Title of host publicationScientific Proceedings. EWEA Annual Conference and Exhibition 2015
    PublisherEuropean Wind Energy Association (EWEA)
    Publication date2015
    ISBN (Print)9782930670003
    Publication statusPublished - 2015
    EventEWEA Annual Conference and Exhibition 2015 - Paris, France
    Duration: 17 Nov 201520 Nov 2015


    ConferenceEWEA Annual Conference and Exhibition 2015


    • Bolund
    • Wake height
    • Complex flow
    • WindScanner


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