| Autor: |
Al-Jiboori, M., Yumao, Xu, Yongfu, Qian |
| Zdroj: |
Advances in Atmospheric Sciences; Dec2000, Vol. 17 Issue 4, p636-648, 13p |
| Abstrakt: |
Micrometeorological data for wind and temperature from a 325 m high lower in Beijing City are analyzed by use of local similarty theory Non–dimentional wind and temperature gradients Φ and Φ are determined by three techniques called respectively, eddy-correlation, mean profiles and inertia subrange cospectra (ISC) method for a wide range of atmospheric stratification from unstable to stable condition Average dissipation rate Φof turbulent kinetic energy (TKE) is evaluated from u-spectrum as a quanlity required in the last technique. Ratio of the eddy transfer coefficients. α(= K / K) is calculated from Φ and Φ estimations. The results from various techniques are compared with each other and with some available empirical results in the lwor -layer. it is shown that the empirical relationship detefrmined by mean profiles and ISC methods in the lower-layer turbulence are in agreement with each other and with some other results. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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