Observations of wind velocity and temperature fluctuations were made in the nocturnal surface inversion layer over a paddy field. A remarkable wave-like motion of about 8 min period was seen in horizontal wind speed and standard deviation ofvertical wind velocity. In addition, fluctuations ofhorizon
Statistics of wind direction fluctuations in the surface layer over plant canopies
โ Scribed by T. Maitani
- Publisher
- Springer
- Year
- 1983
- Tongue
- English
- Weight
- 468 KB
- Volume
- 26
- Category
- Article
- ISSN
- 0006-8314
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โฆ Synopsis
Height dependency of statistics of horizontal and vertical wind direction fluctuations over plant canopies have been studied, using observational data in the surface layer over paddy fields. Vertical wind directions just above plant canopies have significant positive average values and large standard deviations. The rotary spectral analysis indicates that the shear flow over paddy fields is predominantly a clockwise wind oscillation in the high frequency range.
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