Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 19, issue 4
Articles | Volume 19, issue 4
https://doi.org/10.5194/acp-19-2713-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/acp-19-2713-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 19, issue 4
Research article
 | 
01 Mar 2019
Research article |  | 01 Mar 2019

Characterization of flow recirculation zones at the Perdigão site using multi-lidar measurements

Robert Menke, Nikola Vasiljević, Jakob Mann, and Julie K. Lundquist

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Short summary
This research utilizes several months of lidar measurements from the Perdigão 2017 campaign to investigate flow recirculation zones that occur at the two parallel ridges at the measurement site in Portugal. We found that recirculation occurs in over 50 % of the time when the wind direction is perpendicular to the direction of the ridges. Moreover, we show three-dimensional changes of the zones along the ridges and the implications of recirculation on wind turbines that are operating downstream.
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Flow in complex terrain: the Perdigão campaigns (WES/ACP/AMT...
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