Numerical Modeling of Tidal Wave Coupling between Atmospheric Regions

大气区域间潮汐波耦合的数值模拟

• 批准号: 0346218
• 负责人: Jeffrey Forbes
• 金额: $ 58.55万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-03-15 至 2010-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0346218&HistoricalAwards=false
• 关键词: Numerical; Modeling; Tidal; Wave; Coupling

Tidal variability in the mesosphere-thermosphere region is investigated using existing models, and the extant model versions will be expanded to include a high spatial resolution, nonlinear, time-dependent 3-D dynamical model. The specific research focus is to untangle the causes of observed longitudinal, intra-seasonal, and inter-annual tidal variations. The processes to be scrutinized by model comparison to data include tropospheric tidal sources and the mesosphere-thermosphere response (particularly the monthly mean and inter-annual variations), the effect of tidal dissipation in the mesosphere-thermosphere region, wave-wave interactions, the effect of the Mt. Pinatubo eruption on density and temperature in the mesosphere-thermosphere, and inter-seasonal variations.

使用现有模型研究中层-热层区域的潮汐变化，现有模型版本将扩展为包括高空间分辨率、非线性、随时间变化的3-D动力学模型。具体的研究重点是解开观测到的纵向，季节内和年际潮汐变化的原因。通过模式与数据的比较来仔细检查的过程包括对流层潮汐源和中间层-热层响应（特别是月平均和年际变化），中间层-热层区域潮汐耗散的影响，波-波相互作用，Mt.皮纳图博火山爆发对中间层-热层密度和温度的影响及季节间变化。