Dynamical Effects of Isolated Topographic Obstacles Upon Layered Atmospheres

孤立地形障碍物对分层大气的动力学影响

• 批准号: 9106494
• 负责人: Dale Durran
• 金额: $ 6.73万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-08-01 至 1995-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9106494&HistoricalAwards=false
• 关键词: Dynamical; Effects; Isolated; Topographic; Obstacles

It has been shown that large topographic features can have a significant effect on atmospheric processes and hence the prediction of weather. The Principal Investigators will perform theoretical/numerical studies of atmospheric flows past three-dimensional topographical features. Previous work will be extended by allowing non-uniformity in the upstream stratification and airflow. The research should lead to indications of critical atmospheric factors responsible for various flow features around mountains including flow-splitting, formation of shearlines and generation of lee vortices.

研究表明，大的地形特征对大气过程有重大影响，因而对天气预报也有重大影响。首席研究员将对经过三维地形特征的大气流动进行理论/数值研究。先前的工作将通过允许上游分层和气流的不均匀性而得到扩展。该研究应能揭示导致山周围各种流动特征的关键大气因子，包括流动分裂、剪切线的形成和背风涡的产生。