Friction velocity estimation using a 2D sonic anemometer in coastal zones
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| Format: | Artículo científico |
| Language: | en |
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Universidad Nacional Autónoma de México
2022
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| _version_ | 1876442413918060544 |
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| author | Bernardo Figueroa-Espinoza |
| author_facet | Bernardo Figueroa-Espinoza |
| contents | Friction velocity estimation using a 2D sonic anemometer in coastal zones Bernardo Figueroa-Espinoza Zulia Sánchez-Mejía Jorge Maximiliano Uuh-Sonda Paulo Salles Luis Méndez-Barroso Hugo Alberto Gutiérrez-Jurado Biología Monin Coastal Zone 2D anemometer Eddy Covariance Sonic Anemometry Friction velocity (u *) is an important velocity scale used in the study of engineering and geophysical flows. The widespread use of 2D sonic anemometers in modern meteorological stations makes the estimation of u * from just the horizontal components of the velocity a very attractive possibility. The presence of different wind regimes (such as sea breezes in or near coastal zones) causes the turbulent parameters to be dependent on the wind direction. Additionally, u * depends on atmospheric stability, whch makes the estimation of u * from 2D measurements very difficult. A simple expression is proposed, and then tested with data from six independent experiments located in coastal zones. The results show that it is possible to estimate friction velocity from 2D measurements using the turbulence intensity as a proxy for u *, reducing substantially the sensitivity to the wind direction or atmospheric stability, with small root mean squared errors (0.06 < RMSE < 0.097) and high correlation coefficients (0.77 < r2 < 0.95). 2022 artículo científico 0187-6236 https://www.redalyc.org/articulo.oa?id=56582396006 https://www.redalyc.org/journal/565/56582396006/ https://www.redalyc.org/journal/565/56582396006/html/ https://www.redalyc.org/journal/565/56582396006/56582396006.epub https://www.redalyc.org/journal/565/56582396006/movil 10.20937/ATM.52960 en http://www.redalyc.org/revista.oa?id=565 Atmósfera application/pdf Universidad Nacional Autónoma de México Atmósfera (México) Num.4 Vol.35 |
| format | Artículo científico |
| id | redalyc_56582396006 |
| institution | Redalyc |
| language | en |
| publishDate | 2022 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | Friction velocity estimation using a 2D sonic anemometer in coastal zones Bernardo Figueroa-Espinoza Biología Monin Coastal Zone 2D anemometer Eddy Covariance Sonic Anemometry Friction velocity estimation using a 2D sonic anemometer in coastal zones Bernardo Figueroa-Espinoza Zulia Sánchez-Mejía Jorge Maximiliano Uuh-Sonda Paulo Salles Luis Méndez-Barroso Hugo Alberto Gutiérrez-Jurado Biología Monin Coastal Zone 2D anemometer Eddy Covariance Sonic Anemometry Friction velocity (u *) is an important velocity scale used in the study of engineering and geophysical flows. The widespread use of 2D sonic anemometers in modern meteorological stations makes the estimation of u * from just the horizontal components of the velocity a very attractive possibility. The presence of different wind regimes (such as sea breezes in or near coastal zones) causes the turbulent parameters to be dependent on the wind direction. Additionally, u * depends on atmospheric stability, whch makes the estimation of u * from 2D measurements very difficult. A simple expression is proposed, and then tested with data from six independent experiments located in coastal zones. The results show that it is possible to estimate friction velocity from 2D measurements using the turbulence intensity as a proxy for u *, reducing substantially the sensitivity to the wind direction or atmospheric stability, with small root mean squared errors (0.06 < RMSE < 0.097) and high correlation coefficients (0.77 < r2 < 0.95). 2022 artículo científico 0187-6236 https://www.redalyc.org/articulo.oa?id=56582396006 https://www.redalyc.org/journal/565/56582396006/ https://www.redalyc.org/journal/565/56582396006/html/ https://www.redalyc.org/journal/565/56582396006/56582396006.epub https://www.redalyc.org/journal/565/56582396006/movil 10.20937/ATM.52960 en http://www.redalyc.org/revista.oa?id=565 Atmósfera application/pdf Universidad Nacional Autónoma de México Atmósfera (México) Num.4 Vol.35 |
| title | Friction velocity estimation using a 2D sonic anemometer in coastal zones |
| topic | Biología Monin Coastal Zone 2D anemometer Eddy Covariance Sonic Anemometry |
| url | https://www.redalyc.org/articulo.oa?id=56582396006 https://www.redalyc.org/journal/565/56582396006/ https://www.redalyc.org/journal/565/56582396006/html/ https://www.redalyc.org/journal/565/56582396006/56582396006.epub https://www.redalyc.org/journal/565/56582396006/movil |