The influence of the topography at the ATTO site (Amazon Tall Tower Observatory) in the formation of Gravity Waves (GW) was investigated in this work. The role of these waves in gas transport on different heights in the nocturnal boundary layer, was also investigated. For this, were analyzed: experimental data of wind speed, temperature, humidity and CO₂ to identify the GW. Furthermore satellite images, ECMWF ERA5 (European Center for Medium-Range Weather Forecasts) reanalysis, and numerical simulations from the mesoscale JULES-CCATT-BRAMS model (Brazilian Regional Atmospheric Modeling System) version 5.3 were used to perform GW simulations. The simulations involved two configurations (Control-With Topography and No Topography). The sattelite images made it clear that the GW was not associated with convective activities. The simulations showed clear ondulatory signs in air temperature, vertical component of the wind, and gases like CO and O₃. Moreover, they also reveal that the wave originated by the presence of the local topography and this orograph gravity wave had and important role in the transport of gases above the ATTO site.

本文研究了 ATTO 站点（亚马逊高塔天文台）的地形对重力波 (GW) 形成的影响。还研究了这些波在夜间边界层不同高度的气体传输中的作用。为此，进行了分析：风速、温度、湿度和CO _{2的实验数据}来识别GW。此外，卫星图像、ECMWF ERA5（欧洲中期天气预报中心）再分析和来自中尺度 JULES-CCATT-BRAMS 模型（巴西区域大气建模系统）5.3 版的数值模拟被用于执行 GW 模拟。模拟涉及两种配置（有地形控制和无地形控制）。卫星图像清楚地表明GW与对流活动无关。模拟显示了气温、风的垂直分量以及 CO 和 O ₃等气体的明显波动迹象。此外，他们还揭示了波浪起源于当地地形的存在，这种地形重力波在 ATTO 场地上方的气体传输中具有重要作用。