Articles | Volume 19, issue 4
Atmos. Chem. Phys., 19, 2713–2723, 2019

Special issue: Flow in complex terrain: the Perdigão campaigns (WES/ACP/AMT...

Atmos. Chem. Phys., 19, 2713–2723, 2019

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 et al.

Data sets

Perdigão-2017: multi-lidar flow mapping over the complex terrain site R. Menke, J. Mann, and N. Vasiljevic

Perdigao data archive Earth Observing Laboratory

WindsP data archive Porto University

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.
Final-revised paper