Mean velocity profile, turbulence intensity profile, integral scale and wind spectra are the most fundamental characteristics that describe the atmospheric turbulent boundary layer flow.

平均速度剖面，湍流度剖面，积分尺度和风谱是反映大气湍流边界层流动的四个最基本的因素。

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However, the mean vertical wavenumber spectra reveal a significant seasonal variation: the mean spectrum in summer has saturated features, whereas the mean spectrum in winter has unsaturated features.

然而平均垂直波数谱显示了明显的季节变化，在夏季，平均谱具有饱和特性；在冬季，平均谱具有非饱和特性。

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When the random processes that meet certain power spectra are simulated by digital filters to white noise, the step length of the filters affects response mean-square values and correlation functions.

当用计算机模拟满足一定功率谱规律的离散数字随机信号时，通常是对伪随机白噪声离散数字信号进行数字滤波来模拟。

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