Thermospheric Responses to Gravity Waves Dissipated by Molecular Viscosity and Thermal Conductivity

分子粘度和热导率对重力波耗散的热层响应

• 批准号: 0537311
• 负责人: Sharon Vadas
• 金额: $ 26.04万
• 依托单位: NorthWest Research Associates, Incorporated
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-06-01 至 2009-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0537311&HistoricalAwards=false
• 关键词: Thermospheric; Responses; Gravity; Waves; Dissipated

This is a three-year project to conduct a theoretical investigation of gravity wave propagation in the thermosphere. An advanced ray-tracing model that takes into account the strong diffusion in the thermosphere was recently developed by the proposing team and will be utilized in this project. Like-wise, the wave source will be generated by a model that simulates the secondary waves generated by wave breaking in the mesopause and waves generated by mesoscale convective complexes, which was also recently developed by the proposers. A specific objective is to determine the variation of gravity wave forcing and spectra due to variations in the gravity wave source and in the background atmosphere.The problems that this project will address are significant to a wide range of research areas from global circulation modeling to space weather. Specifically, better understanding of wave propagation into the thermosphere is essential to resolve their role in generating, and hence forecasting, such phenomena as equatorial spread-F, which has significant space weather effects. In addition, the project would promote the participation of women in science by helping to advance the successful research career of a female scientist.

这是一个为期三年的项目，对热层中重力波的传播进行理论研究。提出建议的团队最近开发了一种先进的光线追踪模型，该模型考虑了热层中的强扩散，并将在本项目中使用。同样地，波源将由一个模型产生，该模型模拟了由中尺度对流复合体产生的中尺度波和中尺度破波产生的次级波，这也是由提出者最近开发的。一个具体的目标是确定由于重力波源和背景大气的变化而引起的重力波强迫和谱的变化。该项目将解决的问题对从全球环流模型到空间天气的广泛研究领域具有重要意义。具体地说，更好地了解波在热层中的传播对于确定它们在产生和预测具有重大空间天气影响的赤道传播f等现象中的作用至关重要。此外，该项目将通过帮助推动女科学家成功的研究生涯来促进妇女参与科学。