Large-Scale Dynamics and the Maintenance and Variability of the Hydrological Cycle of the Troposphere

对流层水文循环的大尺度动力学与维持与变化

• 批准号: 0450059
• 负责人: Tapio Schneider
• 金额: $ 38.71万
• 依托单位: California Institute of Technology
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-04-01 至 2008-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0450059&HistoricalAwards=false
• 关键词: Large; Scale; Dynamics; Maintenance; Variability

The PI will address the question of how large-scale dynamics, and in particular baroclinic eddies, contribute to the maintenance and variability of the hydrological cycle of the troposphere. The PI will study: (i) how important baroclinic eddies are relative to mean circulations in transporting water vapor and in maintaining the global-scale water vapor distribution; (ii) how water vapor transport by baroclinic eddies depends on circulation characteristics such as the pole-to-equator temperature gradient and the thermal structure of the troposphere; and (iii) how the presence of water vapor and latent heat release affects scales, structures, and transport properties of baroclinic eddies. The PI will address these questions by means of analyses of observational data and simulations with an idealized general circulation model. A postdoctoral associate and a graduate student will participate in this research.

PI将解决一个问题，即大规模动力学，尤其是斜压力涡流有助于对流层水文循环的维持和变异性。 PI将研究：（i）在运输水蒸气和维持全球尺度的水蒸气分布方面，斜压层与平均循环相对重要的重要性； （ii）斜压涡流的水蒸气如何取决于循环特征，例如钢置温度梯度和对流层的热结构； （iii）水蒸气和潜在热量释放的存在如何影响斜压涡流的尺度，结构和运输特性。 PI将通过理想化的一般循环模型的观察数据和模拟分析来解决这些问题。博士后同学和研究生将参加这项研究。