CEDAR Postdoc: A Numerical Study on Time-Dependent Effects of Ducting

该奖项将支持一名博士后研究员两年时间，利用二维模型进行数值模拟，研究重力波在中间层和低热层(MLT)区域的时间演变。该模型将考虑分子扩散和涡流扩散的影响，以模拟波浪的消散。早期对低层热层热管中的波导管的研究表明，与观测结果相比，结果很好。然而，早期的结果是基于假设存在叠加在稳定平均态大气上的单色波的模型。这种方法过于简单化了。新模型将提供依赖于时间的大气中导管的时间演化。

This award will support a post-doctoral researcher for two years to investigate the temporal evolution of gravity wave ducting the mesosphere and lower thermosphere (MLT) region using a two-dimensional model to perform numerical simulations. The model will include the effects of molecular and eddy diffusion to simulate the wave dissipation. Earlier studies of wave ducting in the lower thermosphere thermal duct show excellent results compared with the observations. However, the earlier results were based on models that assumed the existence of monochromatic waves superimposed on a steady mean-state atmosphere. This approach is oversimplified. The new model will provide the temporal evolution of ducting in a time-dependent atmosphere.