Vertical profiles of the turbulent velocity spectra for a 140 m micrometeorological tower

Otávio Costa Acevedo, Pablo Eli Soares de Oliveira, Claudio Alberto Teichrieb, Franciano Scremin Puhales, Luis Gustavo Nogueira Martins, Gervásio Annes Degrazia, Samuel Martins Silva, Rafael Maroneze

Abstract


Multiresolution spectra of both horizontal and vertical wind components observed at a 140-m micrometeorological tower are analysed. The tower is located at the township of Linhares, ES, Brazil, at 4 km from the coast and nest to a thermal power plant. At nighttime, the spectral maximum is located at the largest temporal scales analyzed, being therefore related to nonturbulent low-frequency processes. During the day, spectral maxima of the horizontal wind components show little variation above 20 m.
For the vertical component, on the other hand, the temporal scale of such maxima increases steadily with height.


Keywords


Multiresotution spectra; Spectral máxima; Turbulent kinetic energy

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DOI: https://doi.org/10.5902/2179460X31283

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