A Coupled Model of the Effects of Planetary Waves on the Zonally Averaged State of the Middle Atmosphere

行星波对中层大气纬向平均状态影响的耦合模型

• 批准号: 9205027
• 负责人: John Boyd
• 金额: $ 13.78万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-06-15 至 1995-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9205027&HistoricalAwards=false
• 关键词: Coupled; Model; Effects; Planetary; Waves

The circulation of the middle atmosphere is driven by complex interactions of chemical, physical, and dynamical processes. Ideally this circulation should be simulated with a fully three dimensional model, but to do so can be computationally prohibitive. For this reason, and also in order to isolate certain processes for in-depth studies, researchers rely on simpler models for much of their work. In designing simpler models, researchers endeavor to make them as realistic as possible. Under her last award, the principal investigator coupled a quasi-geostrophic time-dependent wave model to a zonally averaged (two-dimensional) chemical- radiative-dynamical model of the middle atmosphere (principally the stratosphere). The wave model is used to determine the driving of the mean flow by Rossby waves and subsequently the eddy transport of chemical species. Her goal was to obtain more realistic simulations of stratospheric circulation and associated trace species transport than would be possible with the two dimensional model alone. With this renewal award, Dr. Smith will continue her research on the middle atmosphere. The coupled model will be made more realistic with the addition of an interactive lower boundary at the tropopause. The principal objective then will be to assess the quality of the coupled model's dynamical interactions and the ability to simulate transport of chemical species (the distribution of which also affects the circulation). The coupled model will be compared in detail with a fully nonlinear three dimensional model of the stratosphere to determine the ability of the wave model to represent transport processes.

中层大气的环流是由复杂的 化学、物理和动力学过程的相互作用。 理想情况下，这种循环应该用三个完整的 三维模型，但是这样做可能在计算上是禁止的。 出于这个原因，也为了隔离某些过程， 在深入的研究中，研究人员在很大程度上依赖于更简单的模型， 他们的工作。 在设计更简单的模型时，研究人员奋进 让它们尽可能真实。 在她的最后一个奖项， 首席研究员耦合准地转时间依赖 波模型的纬向平均（二维）化学- 中层大气的辐射动力学模型（主要是 平流层）。 波浪模型用于确定 Rossby波的平均流和随后的涡旋输送 化学物种。 她的目标是获得更真实的 平流层环流及相关迹线模拟 物种运输比可能与二维 模特独自一人 有了这个更新奖，史密斯博士将继续她的研究 中层大气。 耦合模型将被制作得更 现实的，增加了一个互动的下边界， 对流层顶 然后，主要目标将是评估 耦合模型动态相互作用的质量和 模拟化学物质迁移的能力（分布 这也影响了流通）。 耦合模型将是 与完全非线性三维模型进行了详细比较 以确定波模型的能力， 代表运输过程。