Internal gravity waves (IGWs) play an important role in the planetary atmospheres, which transfer energy and momentum from the lower layers to the upper atmosphere. However, the IGW perturbations and behaviors are not clear in the Mars upper atmosphere, particularly for the horizontal internal gravity waves (hIGWs). In this study, the hIGWs in the upper atmosphere of Mars are estimated and investigated for the first time using both accelerometer (ACC)‐derived mass density and Neutral Gas and Ion Mass Spectrometer‐measured neutral density from Mars Atmosphere and Volatile EvolutioN (MAVEN) mission. The results show that the amplitudes of hIGWs variations are significantly affected by the dust storms and increase with the altitudes. The larger amplitudes are triggered in Martian Year (MY) 34 during a global dust event. The characteristics of Ar and CO₂ hIGWs variations are similar. Furthermore, the trend of the CO perturbations seems to follow the CO₂. However, the dust storms play little role in shaping hIGWs of atomic O. The hIGWs show the stable waveform with the increasing altitudes.

中文翻译：

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从MAVEN ACC和NGIMS测量得到的火星高层大气水平内部重力波。

内部重力波（IGW）在行星大气中起着重要作用，行星大气将能量和动量从低层传递到高层大气。但是，IGW的扰动和行为在火星上层大气中尚不清楚，特别是对于水平内部重力波（hIGW）。在这项研究中，首次使用加速计（ACC）得出的质量密度和中性气体和离子质谱仪测量的火星大气和挥发性挥发物（MAVEN）中的火星首次估算和研究了hIGW。任务。结果表明，hIGWs的变化幅度受沙尘暴的影响很大，并且随着海拔的升高而增加。在全球尘埃事件期间，较大的振幅在火星年（MY）34中触发。_2个hIGW的变化相似。而且，CO扰动的趋势似乎跟随CO ₂。但是，沙尘暴在塑造原子O的hIGW方面起着很小的作用。随着海拔的升高，hIGW呈现出稳定的波形。