西风爆发事件对厄尔尼诺等短期气候变异有重要影响。气候模式能否正确模拟西风爆发直接关系到模式对气候变异的预测能力。虽然有研究表明部分耦合环流模式中存在类似西风爆发的信号，但大多数学者仍倾向于采用参数化方案在模式中表征西风爆发。因此对于环流模式是否能模拟西风爆发这一重要问题目前尚无定论。此外，尽管对西风爆发的机制有诸多猜测，但这些机制还没有在统一的模式框架内系统地研究过。本项目拟采用国际主流气候模式检验模式对西风爆发事件的模拟效果，并通过一系列模式试验系统地分析和揭示西风爆发的物理过程和机制，从而为进一步深化对热带多尺度海气相互作用机理的认识、提高对短期气候变异的预测能力提供科学支撑。

The westerly wind burst (WWB) events have strong influence on the short-term climate variations such as El Nino. Thus the predictive skill of climate models depends on their ability to correctly simulate WWBs. Although a number of previous studies have shown that WWB-like signals are present in some models, the prevailing approach is still to parameterize WWB statistically. Whether the present climate models can reproduce observed WWB is still an open question. Moreover, the mechanism of WWB genesis has not been systematically examined in a unified modeling framework. The aim of this study is to evaluate the capability of a state-of-the-art climate model to simulate WWB, and to elucidate the dynamics of WWB generation through a set of model experiments, thus providing support for improving our understanding of tropical multi-scale ocean-atmosphere interaction and our predictive skill of short-term climate variations.