Quantitative Comparison of the Transport Circulation of the Troposphere in Observations and General Circulation Model (GCM) Simulations

观测中对流层输送环流与大气环流模型 (GCM) 模拟的定量比较

• 批准号: 0100687
• 负责人: Kenneth Bowman
• 金额: $ 33.24万
• 依托单位: Texas A&M Research Foundation
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-05-01 至 2005-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0100687&HistoricalAwards=false
• 关键词: Quantitative; Comparison; Transport; Circulation; Troposphere

The project will develop quantitative tools to analyze the large-scale tracer transport in both models and the atmosphere. Numerical models of atmospheric chemistry and transport are being increasingly used to understand the interactions between various atmospheric regions, e.g., between troposphere and stratosphere, and the Tropics and midlatitudes. Since trace gases do not directly impact atmospheric motion, they reveal the movement of air parcels. The climatological pathways of the air parcels and the dynamical mechanisms determining the pathways are not known with great certainty at this time. Dr. Bowman will develop a diagnostic tool for analyzing tracer transport, by estimating the Green's (or influence) function for the tracer conservation equation. Dr. Bowman will construct this function from particle trajectories computed from observed (reanalysis) and NCAR Community Climate Model simulated winds. Bowman's project is unique in view of its focus on transport dynamics of the troposphere (as opposed to the stratosphere).

该项目将开发定量工具来分析模型和大气中的大规模示踪剂传输。大气化学和传输的数值模型越来越多地用于了解不同大气区域之间的相互作用，例如对流层和平流层之间以及热带地区和中纬度地区之间的相互作用。由于微量气体不会直接影响大气运动，因此它们揭示了空气团的运动。目前尚不清楚气团的气候路径和决定路径的动力学机制。鲍曼博士将开发一种诊断工具，通过估计示踪守恒方程的格林（或影响）函数来分析示踪运输。 Bowman 博士将根据观测（再分析）和 NCAR 社区气候模型模拟风计算出的粒子轨迹构建此函数。鲍曼的项目的独特之处在于它关注对流层（而不是平流层）的运输动力学。