Modeling Interannual Climate Variability of the Winter Stratosphere

南方涛动（SO）和赤道准 两年振荡（QBO）与显著的年际变化有关 冬季对流层外的变率， 尤其是平流层 本研究将探讨 QBO和SO在产生冬季气候中的相对作用 年际时间尺度上的异常 “深”26级气候 NCAR大气环流模式（社区气候 模式）将用于研究对流层-平流层系统 目的是提供一个统一的观点， 冬季气候变率及其与SO或QBO的关系。 SO和QBO被视为年际变化的外部 在热带以外的冬季半球， 以来 冬季的年际变化是较大的， 平流层比对流层，研究将集中在 平流层气候异常的研究 用通用 循环模型，旨在隔离能够 传达热带强迫异常，SO或QBO， 热带外的冬季大气，两个这样的机制， 提出了 在相反的情况下单独的冬季整合 将执行SO或QBO的极端情况，以确定 大气对SO和QBO的响应。 该等资料不 尤其是在平流层， 可以清楚地区分SO和 观测气候记录中的准两年振荡。

The Southern Oscillation (SO) and the equatorial quasi- biennial oscillation (QBO) are related to significant interannual variability in the extratropical winter troposphere and especially, stratosphere. This research will examine the relative roles of the QBO and SO in crating winter-season climate anomalies on interannual timescales. A "deep" 26-level climate version of the NCAR general circulation model (Community climate Model) will be used to examine the trosphere-stratosphere system with the object of providing a unified view of interannual wintertime climate variability and its relation to the SO or QBO. The SO and QBO are viewed as interannually varying external forcing agents for the extratropical winter hemisphere. Since winter-season interannual variability is grater in the stratosphere than the troposphere, the research will concentrate on the stratospheric climate anomalies. By using a general circulation model, it is intended to isolate mechanisms capable of communicating the tropical forcing anomalies, SO or QBO, to the extratropical winter atmosphere, and two such mechanisms are proposed. Separate winter season integrations under opposite extremes of the SO or QBO will be performed to determine the atmospheric responses to the SO and QBO. Such information is especially important in the stratosphere where it has not been possible to distinguish clearly between the effects of the SO and the QBO in the observational climate record.