Wagner, Johannes and Gerz, Thomas and Wildmann, Norman and Gramitzky, Kira (2019) Long-term simulation of the boundary layer flow over the double-ridge site during the Perdigão 2017 field campaign. Atmospheric Chemistry and Physics (19), pp. 1129-1146. Copernicus Publications. DOI: 10.5194/acp-19-1129-2019 ISSN 1680-7316
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Official URL: https://doi.org/10.5194/acp-19-1129-2019
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.
Item URL in elib: | https://elib.dlr.de/123271/ | |||||||||||||||
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Document Type: | Article | |||||||||||||||
Title: | Long-term simulation of the boundary layer flow over the double-ridge site during the Perdigão 2017 field campaign | |||||||||||||||
Authors: |
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Date: | 2019 | |||||||||||||||
Journal or Publication Title: | Atmospheric Chemistry and Physics | |||||||||||||||
Refereed publication: | Yes | |||||||||||||||
Open Access: | Yes | |||||||||||||||
Gold Open Access: | Yes | |||||||||||||||
In SCOPUS: | Yes | |||||||||||||||
In ISI Web of Science: | Yes | |||||||||||||||
DOI : | 10.5194/acp-19-1129-2019 | |||||||||||||||
Page Range: | pp. 1129-1146 | |||||||||||||||
Editors: |
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Publisher: | Copernicus Publications | |||||||||||||||
ISSN: | 1680-7316 | |||||||||||||||
Status: | Published | |||||||||||||||
Keywords: | Boundary layer flow, complex terrain, numerical modelling | |||||||||||||||
HGF - Research field: | Aeronautics, Space and Transport | |||||||||||||||
HGF - Program: | Space | |||||||||||||||
HGF - Program Themes: | Earth Observation | |||||||||||||||
DLR - Research area: | Raumfahrt | |||||||||||||||
DLR - Program: | R EO - Erdbeobachtung | |||||||||||||||
DLR - Research theme (Project): | R - Vorhaben Atmosphären- und Klimaforschung | |||||||||||||||
Location: | Oberpfaffenhofen | |||||||||||||||
Institutes and Institutions: | Institute of Atmospheric Physics > Transport Meteorology | |||||||||||||||
Deposited By: | Wagner, Johannes | |||||||||||||||
Deposited On: | 19 Nov 2018 09:37 | |||||||||||||||
Last Modified: | 02 May 2019 14:05 |
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