Collaborative Research: Kinematics of the Tropopause

这是一个与约翰·霍普金斯大学沃夫博士合作的项目(ATM-9970507)。首席调查员将审查示踪剂在对流层顶的运动学输送，以便更好地了解平流层和对流层之间的耦合。这项研究的一个关键组成部分将是开发和测试一种数值方案，即所谓的“地面平流”技术。这项技术是“等高线平流”的直接推广，“等高线平流”是一种轨迹跟踪技术，已被PI等人成功地用于研究准水平表面上大气输送的细尺度结构。新的方案将允许可视化和量化整个表面，因为它们在三维空间中演变。利用这项新技术，PIS将研究对流层顶折叠，目的是估计这些事件期间平流层和对流层之间的传输。

This is a collaborative project with Dr. Waugh of Johns Hopkins University (ATM-9970507). The principal investigators (PIs) will examine the kinematic transport of tracers across the tropopause in order to better understand the coupling between the stratosphere and troposphere. A key component of the study will be the development and testing of a numerical scheme, the so-called "surface advection" technique. This technique is a direct extension of "contour advection", a trajectory-following technique which has been used successfully by the PIs and others in examining the fine scale structure of atmospheric transport on quasi-horizontal surfaces. The new scheme will allow for the visualization and quantification of whole surfaces as they evolve in three-dimensional space. Using this new technique, the PIs will study tropopause folds with the goal of estimating the transport between the stratosphere and troposphere during these events.