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A wind field downscaling strategy based on domain segmentation and transfer functions

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A wind field downscaling strategy based on domain.pdf (4,374Mb)
 
10.1002/we.2169
 
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hdl:2117/117019

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Barcons, Jordi
Avila, Matias
Folch, ArnauMés informació
Document typeArticle
Defense date2018-02-06
PublisherWiley
Rights accessOpen Access
Attribution-NonCommercial-NoDerivs 4.0 Spain
This work is protected by the corresponding intellectual and industrial property rights. Except where otherwise noted, its contents are licensed under a Creative Commons license : Attribution-NonCommercial-NoDerivs 4.0 Spain
ProjectHPC4E - HPC for Energy (EC-H2020-689772)
EoCoE - Energy oriented Centre of Excellence for computer applications (EC-H2020-676629)
Abstract
This paper presents a novel methodology for mesoscale‐to‐microscale downscaling of near‐surface wind fields. The model chain consists on the Weather Research and Forecast mesoscale model and the Alya‐CFDWind microscale model (assuming neutral stability). The downscaling methodology combines precomputed microscale simulations with a mesoscale forecast using a domain segmentation technique and transfer functions. As a result, the downscaled wind field preserves the mesoscale pattern but, at the same time, incorporates local mesoscale subgrid terrain effects, particularly at valleys and channelling zones. The methodology has been validated over a 9‐month period on a very complex terrain site instrumented with a dense observational network of meteorological masts. With respect to mesoscale results, the global skills of the downscaled wind at masts improve for wind direction and remain similar for wind velocity. However, a substantial improvement occurs under stable and neutral conditions and for high wind velocity regimes.
CitationBarcons, J.; Avila, M.; Folch, A. A wind field downscaling strategy based on domain segmentation and transfer functions. "Wind Energy", 6 Febrer 2018, vol. 21, núm. 6, p. 409-425. 
URIhttp://hdl.handle.net/2117/117019
DOI10.1002/we.2169
ISSN1095-4244
Publisher versionhttps://onlinelibrary.wiley.com/doi/full/10.1002/we.2169
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