CEDAR: Studies of the Numerical Simulation of Gravity Wave Packets: Effects on Chemical Exothermic Heating

研究人员将研究重力波包对中层顶区化学放热的影响。化学放热是中层顶区的一个重要热源，有大量证据表明重力波与羟基夜辉排放相互作用。一项详细的、与时间相关的研究，包括理解和量化这些波浪效应所需的完全非线性化学，尚未进行。研究人员将使用专门为这些任务设计的最先进的模型，包括模拟依赖时间的重力波包的光谱全波模型，以及求解化学活性次要物种的耦合连续性方程的依赖时间的、非线性的二维化学模型。模型中将包括羟基化学，以更好地了解动力学和气辉排放之间的复杂相互作用。这项研究的主要目的将是了解波浪对平均状态、次要物种分布和相关化学放热的强迫作用。这一结果与用于研究全球变化对中层大气影响的全球气候模型有关。

The investigators will study the effects of gravity wave packets on the chemical exothermic heating in the mesopause region. Chemical exothermic heating is an important heat source in the mesopause region, and there is much evidence that gravity waves interact with hydroxyl nightglow emissions. A detailed, time-dependent study including fully nonlinear chemistry required to understand and quantify these wave effects has yet to be performed. The investigators will use state of the art models specifically designed for these tasks, including the Spectral Full-Wave Model, which simulates a time-dependent gravity wave packet, and a time-dependent, nonlinear, 2-D chemistry model that solves the coupled continuity equations of chemically active minor species. Hydroxyl chemistry will be included in the modeling to better understand the complex interplay between dynamics and airglow emissions. The main thrust of the research will be to understand the forcing of the mean state minor species distributions and associated chemical exothermic heating due to waves. The results are relevant to global climate modeling used to study the effects of global change on the middle atmosphere.