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Biases in wind spee...
Biases in wind speed measurements due to anemometer changes
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Azorin-Molina, Cesar (author)
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Pirooz, Amir Ali Safaei (author)
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Bedoya-Valestt, Shalenys (author)
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Utrabo-Carazo, Eduardo (author)
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Andres-Martin, Miguel (author)
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- Shen, Cheng (author)
- Gothenburg University,Göteborgs universitet,Institutionen för geovetenskaper,Department of Earth Sciences
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- Minola, Lorenzo (author)
- Gothenburg University,Göteborgs universitet,Institutionen för geovetenskaper,Department of Earth Sciences
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Guijarro, Jose A. (author)
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Aguilar, Enric (author)
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Brunet, Manola (author)
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Flay, Richard G.J. (author)
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Vicente-Serrano, Sergio M. (author)
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McVicar, Tim R. (author)
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- Chen, Deliang, 1961 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för geovetenskaper,Department of Earth Sciences
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(creator_code:org_t)
- 2023
- 2023
- English.
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In: Atmospheric Research. - 0169-8095. ; 289
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https://doi.org/10.1...
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Abstract
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- This research presents a case study of the biases and discontinuities that were introduced in observed long-term mean wind-speed and gust data-series due to anemometer changes in a meteorological station in northern Spain, operated by the Spanish State Meteorological Agency: San Sebastian-Igueldo. Field and wind-tunnel experiments with predefined conditions have been presented in the literature, however this research uses a real case study to assess the impact of anemometer changes on wind speed measurements due to three factors being: (i) the 3-cup anemometer model (SEAC vs. THIES companies); (ii) sensor height (∼19.95 m vs. ∼20.45 m) and (iii) sensor age (20-years old vs. new). Our results show (a) substantial biases in the measured wind speed and daily peak wind gusts, with the new THIES anemometer reporting stronger surface winds than the old SEAC anemometer; (b) opposing biases under weak (negative) and moderate-strong (positive) winds; and (c) significant breakpoints in the long-term wind data-series, which highlight the importance of data homogenization. National Weather Services and climate assessment groups will benefit from these findings since errors in wind speed and gust measurements can be minimized by implementing systematic observation protocols. Robust anemometer observations provide a basis for accurate quantification of the magnitude of changes and the variability of surface winds.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Klimatforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Climate Research (hsv//eng)
Keyword
- Anemometer changes
- Biases
- Breakpoints
- Surface wind measurements
Publication and Content Type
- ref (subject category)
- art (subject category)
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Azorin-Molina, C ...
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Pirooz, Amir Ali ...
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Bedoya-Valestt, ...
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Utrabo-Carazo, E ...
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Andres-Martin, M ...
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Shen, Cheng
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show more...
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Minola, Lorenzo
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Guijarro, Jose A ...
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Aguilar, Enric
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Brunet, Manola
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Flay, Richard G. ...
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Vicente-Serrano, ...
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McVicar, Tim R.
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Chen, Deliang, 1 ...
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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and Climate Research
- Articles in the publication
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Atmospheric Rese ...
- By the university
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University of Gothenburg