Spectra of temperature derivatives in the atmospheric surface layer
β Scribed by R. A. Antonia; A. J. Chambers
- Book ID
- 110608745
- Publisher
- Springer
- Year
- 1978
- Tongue
- English
- Weight
- 184 KB
- Volume
- 15
- Category
- Article
- ISSN
- 0006-8314
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π SIMILAR VOLUMES
Production, transport and dissipation terms in the temperature variance equation have been measured in the atmospheric surface layer. The transport term is, within the experimental uncertainty, negligible. The dissipation term, determined by assuming local isotropy, is approximately equal to product
Production, transport and dissipation terms in the mean cube temperature equation have been evaluated from measurements in the atmospheric surface layer under moderately unstable conditions. The transpart term, calcuIated by making use of the quasi-Gaussian approximation, is, on average, comparable
Microscale temperature fluctuations were measured at 2 m above a grassy surface. The temperature-derivative spectrum was in general agreement with earlier results but the bump at nondimensional wavenumbers higher than 0.02 was not as pronounced as has been observed. The Obukhov-Corrsin constant for
## Abstract Spectra and cospectra of turbulence in the constantβflux surface layer of the atmosphere are studied with measurements made by rapid response propeller anemometers and a bead thermistor. The results are described in comparison with those obtained at other sites.
Velocity and temperature derivatives were obtained at a height of 4 m in the atmospheric surface layer above land. With the assumption of local isotropy, these measurements are used to obtain some statistics of the turbulent energy and scalar dissipation fields. These statistics include the variance