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| Titel |
Weather response to a large wind turbine array |
| VerfasserIn |
D. B. Barrie, D. B. Kirk-Davidoff |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 10, no. 2 ; Nr. 10, no. 2 (2010-01-26), S.769-775 |
| Datensatznummer |
250007974
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| Publikation (Nr.) |
 copernicus.org/acp-10-769-2010.pdf |
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| Zusammenfassung |
| Electrical generation by wind turbines is increasing rapidly, and has been
projected to satisfy 15% of world electric demand by 2030. The extensive
installation of wind farms would alter surface roughness and significantly
impact the atmospheric circulation due to the additional surface roughness
forcing. This forcing could be changed deliberately by adjusting the
attitude of the turbine blades with respect to the wind, which would enable
the "management" of a large array of wind turbines. Using a General
Circulation Model (GCM), we represent a continent-scale wind farm as a
distributed array of surface roughness elements. Here we show that initial
disturbances caused by a step change in roughness grow within four and a
half days such that the flow is altered at synoptic scales. The growth rate
of the induced perturbations is largest in regions of high atmospheric
instability. For a roughness change imposed over North America, the induced
perturbations involve substantial changes in the track and development of
cyclones over the North Atlantic, and the magnitude of the perturbations
rises above the level of forecast uncertainty. |
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