Quasi-biennial Variability in the Extratropical Circulation and Ozone

本项目将利用全球三维平流层模式研究热带准两年生振荡（QBO）对温带冬季环流和示踪剂输送的影响，其中罗斯比波传播提供了耦合机制。示踪剂平流方案将与三维机制模式一起使用，以估计与赤道QBO的环流调制有关的臭氧（或其他准保守示踪剂）浓度的温带准两年变率。这项研究很重要，因为它为加强对低频振荡（QBO）如何与其他天气和气候现象相互作用的理论认识提供了基础。

This project will use a global 3-D stratospheric model to study the effect of the tropical quasi-biennial oscillation (QBO) on the extratropical wintertime circulation and tracer transport, with Rossby wave propagation providing the coupling mechanism. A tracer advection scheme will be used along with the 3-D mechanistic model, to estimate the extratropical quasi-biennial variability in ozone (or other quasi-conservative tracer) concentration associated with the circulation modulation by the equatorial QBO. This research is important because it provides the basis for inhanced theoretical understanding of how low- frequency oscillations (the QBO) interact with other weather and climate phenomena.