The Maintenance of Stationary Waves in a General CirculationModel

虽然长期以来一直假定大气中的驻波模式是可预测的，但从来没有令人满意的证据表明情况确实如此。将一般环流模式的简化版本和完全非线性版本的模拟进行比较，可以用来确定驻波的潜在可预测性。本项目主要研究NMC环流模式中驻波维持的原因及其异常。要使用的技术工具是离散化的、线性化的模式大气对特定强迫（如地形和加热）的稳态响应的模型。该项目将首次对NMC环流模式中产生驻波的原因进行定量和明确的分析。这将为实际大气中驻波的研究以及动态增程预测的可行性奠定基础。

While it has long been postulated that stationary wave patterns in the atmosphere are predictable, it has never been satisfactorily demonstrated that this is the case. A comparison of simulations with a simplified version and a fully non-linear version of a general circulation model can be used to determine the potential predictability of stationary waves. This project focuses on examination of the causes for maintenance of stationary waves and their anomalies in the NMC General Circulation Model. The technical tools to be used are discretized, linearized models of the steady state response of the model atmosphere to specified forcing such as orography and heating. The project will provide for the first time a quantitative and definitive analysis of what causes stationary waves in the NMC General Circulation Model. This will lay the foundation for research on stationary waves in the real atmosphere as well as on the feasibility of dynamical extended range prediction.