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首页> 外文期刊>Journal of Geophysical Research. Biogeosciences >A modeling study of O-2 and OH airglow perturbations induced by atmospheric gravity waves - art. no. 4151
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A modeling study of O-2 and OH airglow perturbations induced by atmospheric gravity waves - art. no. 4151

机译：大气重力波引起的O-2和OH气辉扰动的模型研究-艺术。没有。 4151

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1] A one-dimensional model is used to investigate the relations between gravity waves and O-2 and OH airglows perturbations. The amplitude and phase of the airglow perturbations induced by gravity waves (with period > 20 min) are calculated for different vertical wavelength (10-50 km) and damping rate. The model shows that for vertically propagating gravity waves, the amplitude of airglow perturbations observed from ground is larger for longer vertical wavelength, because of the smaller cancellation effect within each layer. The ratio of the amplitudes between O-2 and OH is smaller for larger wave damping. For upward propagating (downward phase progression) waves, the intensity perturbation in O-2 leads OH, and their phase difference (O-2 minus OH) is larger for smaller vertical length and/or stronger damping. The rotational temperature perturbation leads intensity perturbation in both layers. Their phase difference is also larger for smaller vertical length but is smaller for stronger damping. Based on these relations, the vertical wavelength and damping rate of gravity waves can be derived from simultaneous measurements of airglow perturbations in O-2 and OH layers. [References: 28
机译：1]一维模型用于研究重力波与O-2和OH气辉扰动之间的关系。针对不同的垂直波长（10-50 km）和阻尼率，计算了重力波（周期> 20分钟）引起的气辉扰动的幅度和相位。该模型表明，对于垂直传播的重力波，由于更长的垂直波长，从地面观察到的气辉扰动的振幅较大，这是因为每一层内的抵消作用较小。对于较大的波衰减，O-2和OH之间的振幅比较小。对于向上传播（向下相位行进）的波，O-2中的强度扰动会导致OH，并且其相位差（O-2减去OH）对于较小的垂直长度和/或更强的阻尼来说较大。旋转温度扰动导致两层的强度扰动。对于较小的垂直长度，它们的相位差也较大，但对于较强的阻尼，它们的相位差也较小。基于这些关系，可以同时测量O-2和OH层中的气辉​​扰动，从而得出重力波的垂直波长和阻尼率。 [参考：28

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