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首页> 外文期刊>Geophysical Research Letters >Convectively generated mesoscale gravity waves simulated throughout the middle atmosphere - art. no. 2007
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Convectively generated mesoscale gravity waves simulated throughout the middle atmosphere - art. no. 2007

机译：对流产生的中尺度重力波在整个中层大气中模拟-艺术。没有。 2007年

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摘要

A three-dimensional simulation was conducted with a cloud-resolving model to investigate mesoscale gravity waves generated by cumulus convection that propagate to the mesospheric and lower thermospheric (MLT) region. It is found that both individual convective turrets and mesoscale convective systems excite gravity waves, resulting in a broad scale distribution. Waves excited by the former have conically shaped phase surfaces as previously reported and are conspicuous up to around the stratopause. Waves excited by the latter dominate in the MLT region. Frequent wave breaking is found above 85 km, where convective instability is found typically in the initial stage, leading to unstable shear with billows resembling the ripple-type structures observed frequently in airglow imaging. [References: 23]
机译：使用云解析模型进行了三维模拟，以研究由积云对流产生的中尺度引力波，该引力波传播到中层和较低热层（MLT）区域。发现单个对流转塔和中尺度对流系统均会激发重力波，从而导致较宽的尺度分布。如前所述，由前者激发的波具有圆锥形的相表面，并且直到平顶岩层附近都非常明显。后者激发的波在MLT区域占主导地位。在85 km以上发现了频繁的波浪破碎，通常在初始阶段发现对流不稳定性，导致剪切不稳定，波涛类似于气辉成像中经常观察到的波纹型结构。 [参考：23]

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