Wave-like wind fluctuations observed in the stable surface layer over a plant canopy

Maitani, Toshihiko; Hiramatsu, Yoshio; Seo, Takuro

doi:10.1007/bf00119793

Cited by 4 publications

(1 citation statement)

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“…In a previous paper (Maitani and Seo, 1984), we reported characteristics of wave-like wind fluctuations of 8 and 30 min periods, using wind and temperature fluctuation data in the nocturnal surface inversion layer over a paddy field. The wave-like wind fluctuations over a plant canopy may play important roles in the atmospheric transports of heat, water vapor and carbon dioxide and dispersion of agricultural particles such as foliar pathogens, pollens and spores.…”

Section: Introductionmentioning

confidence: 99%

Wave-like wind fluctuations observed in the stable surface layer over a plant canopy(2)

Maitani

1989

Boundary-Layer Meteorol

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Observations of wind velocity and air temperature fluctuations were made in the nocturnal surface inversion layer over a sorghum field. Wave-like fluctuations of temperature and wind velocity with a period of 15-20 min were observed for about 2 hours, 3 to 5 hours before sunrise. Wave-like fluctuations of temperature were observed in the air layer above and within a plant canopy and were most noticeable at the top of the plant canopy. Spectral analysis of temperature and wind velocity fluctuations reveals a separation of energy into wave-like and turbulent fluctuations. Cospectral analysis shows that for both momentum and heat, vertical transports are partitioned almost equally in the frequency ranges characteristic of wave-like and turbulent fluctuations. This suggests waveturbulence interactions at low frequencies in the air layer near a plant canopy.

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Section: Introductionmentioning

confidence: 99%