Gravity wave kinetic, potential, and vertical fluctuation energies as indicators of different frequency gravity waves
Gravity wave kinetic, potential, and vertical fluctuation energies as indicators of different frequency gravity waves
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DOI：
10.1029/2009jd012266
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发表时间：
2010-06
影响因子：
--
通讯作者：
M. Geller;J. Gong
中科院分区：
文献类型：
--
作者：
M. Geller;J. Gong
[1]使用高垂直分辨率无线电探空仪数据检查大气重力波的一个优点是可以直接测量水平风、温度和垂直上升率。这使得动能、势能和垂向速度波动能可以独立地导出。这些重力波能量中的每一个被示出对不同的重力波频率具有敏感性。观察到的这些能量之间的相关性是一致的，这些相关性的模拟约束重力波频谱。这些能量的气候学表现出相当不同的变化与一年中的月份和纬度，这样的垂直波动能量似乎是一个更好的指示对流强迫高频重力波。
[1] An advantage of examining atmospheric gravity waves using high vertical-resolution radiosonde data over other measurement techniques is that horizontal wind, temperature, and vertical ascent rate can be measured directly. This allows the kinetic, potential, and vertical velocity fluctuation energies to be derived independently. Each of these gravity wave energies is shown to have sensitivity to different gravity wave frequencies. Observed correlations among these energies are consistent with this, and simulations of these correlations are shown to constrain gravity wave frequency spectra. The climatology of these energies shows quite different variations with month of the year and with latitude such that the vertical fluctuation energy seems to be a better indicator of convectively forced higher-frequency gravity waves.