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域化学放热加热的影响。 化学放热加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光辐射相互作用。 一个详细的，时间依赖性的研究，包括完全非线性化学需要了解和量化这些波的影响尚未执行。 研究人员将使用专门为这些任务设计的最先进的模型，包括光谱全波模型，该模型模拟了随时间变化的重力波包，以及随时间变化的非线性二维化学模型，该模型解决了化学活性次要物质的耦合连续性方程。 羟基化学将包括在建模中，以更好地了解动态和气辉排放之间的复杂相互作用。 研究的主旨将是了解平均状态的次要物种分布和相关的化学放热加热由于波浪的强迫。 这些结果与用于研究全球变化对中层大气影响的全球气候模拟有关。

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.