Low-Frequency Zonally-Averaged Flow Variability Studied with Models and Observations

摘要ATM-9416701 Feldstein，Steven Pennsylvania州立大学题目：用模型和观测研究低频区带平均流变率 建议的研究的主要目标是调查的纬向平均气流对大气低频变率的作用。 为了实现这一目标，采用了一种综合方法，即检查真实的观测、理想化的简单模式和现实的复杂全球模式的输出。 这种方法可以提高我们对大气低频变率基本动力学的理解。 详细的动力机制与维持，发病和衰减的高和低纬向指数阶段将被检查。 将研究区域遥相关型和阻塞及其与纬向指数的关系。 还将研究SST在纬向指数年际变化中的作用。 大气的低频振荡与中期和长期预报密切相关。这项研究有可能改进预测模型，从而预测。

Abstract ATM-9416701 Feldstein, Steven Pennsylvania State University Title: Low-Frequency Zonally-Averaged Flow Variability Studied with Models and Observations The primary objective of the proposed research is to investigate the role of the zonally averaged flow on atmospheric low frequency variability. A combined approach of examining the real observations, the outputs of idealized simple models and realistic complex global models is being adopted to achieve this goal. This approach can enhance our understanding of the fundamental dynamics of low frequency variability of the atmosphere. Details of dynamical mechanisms associated with the maintenance, onset and decay of both high and low zonal index phases will be examined. Regional teleconnection patterns and blocking and their relationship with zonal index will be studied. The role of SST in the interannual variability of the zonal index will also be investigated. Low frequency oscillations of the atmosphere are intimately related to medium and extended range forecasting. This research has potential for improving forecast models and in turn forecasts.