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，以分析模型和大气中的大规模示踪剂迁移。大气化学和传输的数值模式正越来越多地用于了解各种大气区域之间的相互作用，例如，在对流层和平流层之间，在热带和中纬度之间。由于痕量气体不直接影响大气运动，它们揭示了空气团的运动。目前还不十分清楚气团的气候路径和决定路径的动力机制。鲍曼博士将开发一种诊断工具，用于分析示踪剂运输，通过估计示踪剂守恒方程的绿色（或影响）函数。Bowman博士将根据观测（再分析）和NCAR社区气候模型模拟风计算的粒子轨迹构建此函数。鲍曼的项目是独一无二的，因为它的重点是对流层（而不是平流层）的传输动力学。

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).