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Comparison of surface wind speed and wind speed profiles in the Taklimakan Desert

Near-surface (10 m) wind speed (NWS) plays a crucial role in many areas, including the hydrological cycle, wind energy production, and the dispersion of air pollution. Based on wind speed data from Tazhong and the northern margins of the Taklimakan Desert in Xiaotang in spring, summer, autumn, and w...

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Autores principales: Liu, Xinchun, Kang, Yongde, Chen, Hongna, Lu, Hui
Formato: Online Artículo Texto
Lenguaje:English
Publicado: PeerJ Inc. 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8985592/
https://www.ncbi.nlm.nih.gov/pubmed/35402107
http://dx.doi.org/10.7717/peerj.13001
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author Liu, Xinchun
Kang, Yongde
Chen, Hongna
Lu, Hui
author_facet Liu, Xinchun
Kang, Yongde
Chen, Hongna
Lu, Hui
author_sort Liu, Xinchun
collection PubMed
description Near-surface (10 m) wind speed (NWS) plays a crucial role in many areas, including the hydrological cycle, wind energy production, and the dispersion of air pollution. Based on wind speed data from Tazhong and the northern margins of the Taklimakan Desert in Xiaotang in spring, summer, autumn, and winter of 2014 and 2015, statistical methods were applied to determine the characteristics of the diurnal changes in wind speed near the ground and the differences in the wind speed profiles between the two sites. The average wind speed on a sunny day increased slowly with height during the day and rapidly at night. At heights below 4 m the wind speed during the day was higher than at night, whereas at 10 m the wind speed was lower during the day than at night. The semi-empirical theory and Monin–Obukhov (M–O) similarity theory were used to fit the NWS profile in the hinterland of the Tazhong Desert. A logarithmic law was applied to the neutral stratification wind speed profile, and an exponential fitting correlation was used for non-neutral stratification. The more unstable the stratification, the smaller the n. Using M–O similarity theory, the “linear to tens of” law was applied to the near-neutral stratification. According to the measured data, the distribution of φ(M) with stability was obtained. The γ(m) was obtained when the near-surface stratum was stable in the hinterland of Tazhong Desert and the β(m) was obtained when it was unstable. In summer, γ(m) and β(m) were 5.84 and 15.1, respectively, while in winter, γ(m) and β(m) were 1.9 and 27.1, respectively.
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spelling pubmed-89855922022-04-07 Comparison of surface wind speed and wind speed profiles in the Taklimakan Desert Liu, Xinchun Kang, Yongde Chen, Hongna Lu, Hui PeerJ Climate Change Biology Near-surface (10 m) wind speed (NWS) plays a crucial role in many areas, including the hydrological cycle, wind energy production, and the dispersion of air pollution. Based on wind speed data from Tazhong and the northern margins of the Taklimakan Desert in Xiaotang in spring, summer, autumn, and winter of 2014 and 2015, statistical methods were applied to determine the characteristics of the diurnal changes in wind speed near the ground and the differences in the wind speed profiles between the two sites. The average wind speed on a sunny day increased slowly with height during the day and rapidly at night. At heights below 4 m the wind speed during the day was higher than at night, whereas at 10 m the wind speed was lower during the day than at night. The semi-empirical theory and Monin–Obukhov (M–O) similarity theory were used to fit the NWS profile in the hinterland of the Tazhong Desert. A logarithmic law was applied to the neutral stratification wind speed profile, and an exponential fitting correlation was used for non-neutral stratification. The more unstable the stratification, the smaller the n. Using M–O similarity theory, the “linear to tens of” law was applied to the near-neutral stratification. According to the measured data, the distribution of φ(M) with stability was obtained. The γ(m) was obtained when the near-surface stratum was stable in the hinterland of Tazhong Desert and the β(m) was obtained when it was unstable. In summer, γ(m) and β(m) were 5.84 and 15.1, respectively, while in winter, γ(m) and β(m) were 1.9 and 27.1, respectively. PeerJ Inc. 2022-04-01 /pmc/articles/PMC8985592/ /pubmed/35402107 http://dx.doi.org/10.7717/peerj.13001 Text en © 2022 Liu et al. https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited.
spellingShingle Climate Change Biology
Liu, Xinchun
Kang, Yongde
Chen, Hongna
Lu, Hui
Comparison of surface wind speed and wind speed profiles in the Taklimakan Desert
title Comparison of surface wind speed and wind speed profiles in the Taklimakan Desert
title_full Comparison of surface wind speed and wind speed profiles in the Taklimakan Desert
title_fullStr Comparison of surface wind speed and wind speed profiles in the Taklimakan Desert
title_full_unstemmed Comparison of surface wind speed and wind speed profiles in the Taklimakan Desert
title_short Comparison of surface wind speed and wind speed profiles in the Taklimakan Desert
title_sort comparison of surface wind speed and wind speed profiles in the taklimakan desert
topic Climate Change Biology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8985592/
https://www.ncbi.nlm.nih.gov/pubmed/35402107
http://dx.doi.org/10.7717/peerj.13001
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