Interaction of gravity waves with the QBO: A satellite perspective
Interaction of gravity waves with the QBO: A satellite perspective
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DOI：
10.1002/2013jd020731
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发表时间：
2014-03-16
影响因子：
4.4
通讯作者：
Riese, M.
中科院分区：
文献类型：
--
作者：
Ern, M.;Ploeger, F.;Riese, M.
热带平流层中最重要的动力过程之一是纬向风准两年振荡（QBO）。尽管如此，QBO在天气和气候模型中并没有得到很好的体现。为了提高代表性的QBO的模式，更好地理解的驱动QBO的大气波是必需的。特别是，重力波的贡献是高度不确定的，因为所涉及的水平尺度很小，仍然没有基于全球观测的直接估计。利用HIRDLS和SABER卫星的温度观测资料，导出了重力波动量通量。观测到的动量通量谱表明，特别是具有内禀相速度的重力波，
One of the most important dynamical processes in the tropical stratosphere is the quasi-biennial oscillation (QBO) of the zonal wind. Still, the QBO is not well represented in weather and climate models. To improve the representation of the QBO in the models, a better understanding of the driving of the QBO by atmospheric waves is required. In particular, the contribution of gravity waves is highly uncertain because of the small horizontal scales involved, and there is still no direct estimation based on global observations. We derive gravity wave momentum fluxes from temperature observations of the satellite instruments HIRDLS and SABER. Momentum flux spectra observed show that particularly gravity waves with intrinsic phase speeds