Journal cover Journal topic
Atmospheric Chemistry and Physics An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

Journal metrics

  • IF value: 5.509 IF 5.509
  • IF 5-year value: 5.689 IF 5-year 5.689
  • CiteScore value: 5.44 CiteScore 5.44
  • SNIP value: 1.519 SNIP 1.519
  • SJR value: 3.032 SJR 3.032
  • IPP value: 5.37 IPP 5.37
  • h5-index value: 86 h5-index 86
  • Scimago H index value: 161 Scimago H index 161
Discussion papers
https://doi.org/10.5194/acp-2018-997
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-2018-997
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 21 Sep 2018

Research article | 21 Sep 2018

Review status
This discussion paper is a preprint. A revision of the manuscript is under review for the journal Atmospheric Chemistry and Physics (ACP).

Long-term simulation of the boundary layer flow over the double-ridge site during the Perdigão 2017 field campaign

Johannes Wagner, Thomas Gerz, Norman Wildmann, and Kira Gramitzky Johannes Wagner et al.
  • Deutsches Zentrum für Luft- und Raumfahrt, Institut für Physik der Atmosphäre, 82234 Oberpfaffenhofen, Germany

Abstract. The Perdigao campaign 2017 was an international field campaign to measure the flow and its diurnal variation in the atmospheric boundary layer over complex terrain. A huge dataset of meteorological observations was collected over the double-hill site by means of state-of-the-art meteorological measurement techniques. A focus of the campaign was the interaction of the boundary layer flow with a single wind turbine, which was located on the south-western (SW) ridge top. In this study a long-term nested large-eddy-simulation (LES) of 49 days duration with a maximum horizontal resolution of 200m is used to describe both the general meteorological situation over Spain and Portugal and the local small-scale flow structures over the double-hill during the intensive observation period (IOP). The simulations show that frequently observed nocturnal low-level jets (LLJ) from NE have their origin over the slopes of the elevated plateau between the Portuguese Serra da Estrela and the Spanish Sierra de Gata mountain ranges N and NE of Perdigao and that the diurnal clockwise turning of the wind direction over the double-ridge is induced by slope- and valley-winds under weak synoptic conditions. It is found that in spite of the long simulation time, modelled and observed wind structures on the ridge tops agree well, while along-valley flow within the valley is underestimated by the model.

Johannes Wagner et al.
Interactive discussion
Status: final response (author comments only)
Status: final response (author comments only)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
[Login for Authors/Co-Editors] [Subscribe to comment alert] Printer-friendly Version - Printer-friendly version Supplement - Supplement
Johannes Wagner et al.
Johannes Wagner et al.
Viewed  
Total article views: 338 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
251 83 4 338 5 5
  • HTML: 251
  • PDF: 83
  • XML: 4
  • Total: 338
  • BibTeX: 5
  • EndNote: 5
Views and downloads (calculated since 21 Sep 2018)
Cumulative views and downloads (calculated since 21 Sep 2018)
Viewed (geographical distribution)  
Total article views: 338 (including HTML, PDF, and XML) Thereof 337 with geography defined and 1 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Cited  
Saved  
No saved metrics found.
Discussed  
No discussed metrics found.
Latest update: 20 Nov 2018
Publications Copernicus
Special issue
Download
Short summary
Long-term WRF-LES simulations were performed with a horizontal resolution of 200 m for a period of 49 days during the Perdigão campaign. Simulation results were used to characterize the meteorological conditions and to analyse characteristic flow patterns. It could be shown that thermally driven flows including low-level jets frequently occured during the observation period. Model results were in very good agreement with observations in spite of the long simulation time.
Long-term WRF-LES simulations were performed with a horizontal resolution of 200 m for a period...
Citation
Share