The Vertical Structure of Low-Frequency Atmospheric Flows

1979年初的全球天气实验（GWE）部署了增强型观测系统，首次提供了至少在大气环流的最大（行星波）尺度上真正的全球覆盖。随后发展了分析技术，将这些观测结果与持续运行的数值模型的输出相结合，以获得与模型内建的物理和动力学定律一致的数据集。对这些数据集的研究提供了关于行星尺度环流特征的新见解，这些特征在季节内到季节期间变化缓慢。诺格斯-佩格尔博士将使用10年的数据集来研究这种环流特征的垂直结构，这些数据集是用最先进的技术将观测结果同化为数值模型解决方案而准备的。探测到的垂直结构将提供关于本地和远程能量源在激发和维持构成这些特征的准平稳波中的相对作用的指示。研究结果可以指导大气环流模式的发展，使其更准确地模拟季节和季节内的变化。这种改进的预测将提高环境政策框架和经济资源分配决定的可信度和效用。

The Global Weather Experiment (GWE) of early 1979 deployed augmented observational systems that offered, for the first time, truly global coverage at least on the largest (planetary wave) scales of the atmospheric circulation. Analysis techniques were subsequently developed that merged these observations with the output of continually running numerical models to obtain data sets consistent with the physical and dynamical laws built into the models. Research with these data sets has provided new insights on planetary-scale circulation features which vary slowly over intra- seasonal to seasonal periods. Dr. Nogues-Paegle will use a 10-year data set, which was prepared with state-of-the-art techniques for assimilating observations into numerical model solutions, to look at the vertical structure of such circulation features. The vertical structure detected will provide an indication as to the relative roles of local and remote energy sources in the excitation and maintenance of the quasi-stationary waves composing these features. The results should guide the development of general circulation models so they simulate seasonal and intraseasonal changes more accurately. Such improved predictions will have enhanced credibility and utility in the framing of environmental policy and economic resource allocation decisions.