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An Analysis of the Turbulent Structure in the Unstable Surface Layer nearby a Shelter Belt
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作者 曾宗泳 马成胜 +1 位作者 刘晓春 凌蕙琴 《Advances in Atmospheric Sciences》 SCIE CAS CSCD 1989年第4期493-500,共8页
An analysis was performed of the turbulent data obtained from Yucheng experimental station in the Shandong Province in 1984. [t is shown that at variant wind speed, the spectra of streamwise velocity remain similar an... An analysis was performed of the turbulent data obtained from Yucheng experimental station in the Shandong Province in 1984. [t is shown that at variant wind speed, the spectra of streamwise velocity remain similar and the intensity of wind fluctuations is proportional to wind speed in the downwind area of shelter belt. Therefore, we may decide the similarity of wind fluctuations by a speed scale and a length scale which is not correlated with stability, σu /V0 = F(X / H). The -5/3 power range of temperature spectra extends to lower frequency. The variation of ratio σ0 /T. with stability becomes σ0 / T . = C(X / H)( - Z / L)-1/3 . There is not such an extension of -5 / 3 power range in the humidity spectra. 展开更多
关键词 In An Analysis of the turbulent Structure in the Unstable Surface Layer nearby a Shelter belt
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