CEDAR: Mesospheric and Lower Thermospheric Ducting of Gravity Waves Generated by Tropospheric Convection

利用二维和三维非线性数值模型对小尺度、对流强迫、导管重力波进行表征，目的是将模型重力波现象与重力波通常成像的高度数据进行比较。初步任务描述了雷暴产生的重力波在进入中间层并最终到达约87公里（气辉层）时的结构、方向性和影响。第二个任务是将大气“类钻孔”波的形态描述为理想大气中的一般现象。研究了该一般模式对观测到的中间层孔的适用性。最后的任务是确定线性和非线性重力波现象如何干扰OI 557.7 nm和OH Meinel气辉层。

Small-scale, convectively-forced, ducted gravity waves are characterized using 2D and 3D nonlinear numerical models, with the goal of comparing model gravity wave phenomena to data from altitudes where gravity waves are commonly imaged. A preliminary task characterizes the structure, directionality, and effect of a thunderstorm generated gravity wave when ducted into the mesosphere and ultimately to about 87 km (the airglow layer). A second task characterizes the morphology of atmospheric "bore-like" waves as a general phenomenon within an idealized atmosphere. The applicability of that general model to observed mesospheric bores is investigated. A final task determines how linear and nonlinear gravity wave phenomena perturb both the OI 557.7 nm and OH Meinel airglow layers.