Analysis of gravity wave vertical propagation using optical and radio measurements

我们在北欧用气辉成像仪和激光雷达/雷达进行了联合测量，分析了重力波从低层大气到高层大气的垂直传播。光线追踪分析表明，在中层气辉中观测到的重力波是由距气辉观测点约2600公里的对流层顶高度的极地急流扭曲产生的。这一结果意味着重力波可能会影响远离其震源区域的电离层大气动力学。基于这一想法，我们还开发了一个分析环境，用于分析日本多点观测的同步气辉成像网络数据，以研究覆盖日本的波传播结构。通过网络分析，我们首次给出了“导管重力波在很大距离上传播的观测证据”和“台风”蓬索娜引起的大型同心气辉结构“。

We analysed the vertical propagation of gravity waves from the lower to the upper atmosphere from combined measurements with an airglow imager and lidars/radars in the northern Europe. Ray-tracing analysis suggested that the gravity wave observed in the mesospheric airglow was generated by a distortion of the polar jet at the tropopause height, approximately 2600 km away from the airglow observation site. This result implies that gravity waves could affect atmospheric dynamics in the ionosphere in regions far away from their source.Based on this idea, we also developed an analysis environment for simultaneous airglow imaging network data from multipoint observations in Japan in order to investigate wave propagation structures with a spatial extent covering Japan. By using the network analysis, we showed, for the first time, "observational evidence for ducted gravity wave propagation over a very large distance" and "large concentric airglow structures induced by Typhoon Pongsona".