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

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。大气化学和输送的数值模式正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和中纬度之间的相互作用。由于微量气体不直接影响大气运动，它们揭示了空气包裹的运动。空气包裹的气候路径和决定路径的动力机制目前还不十分确定。鲍曼博士将通过估计示踪剂守恒方程的格林（或影响）函数，开发一种分析示踪剂输运的诊断工具。鲍曼博士将根据观测（再分析）和NCAR社区气候模型模拟风计算出的粒子轨迹来构建这个函数。鲍曼的项目是独特的，因为它关注对流层（相对于平流层）的运输动力学。

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).