Model-Aided Synoptic Studies

这项研究项目的总体目标是澄清我们对气旋(风暴)和相关大气天气系统如何形成和加强的理解。这一结果可能有助于提高天气预报的技能。将对三种现象进行调查。第一个是温带气旋，特别是在快速加强的情况下。PI希望找出导致气旋发生爆炸性的因素。第二个研究领域是中尺度孤立重力波。这些海浪代表与气旋的扰动，气旋通常宽100公里，持续一小时，并导致非常迅速的气压下降，有时还会造成危险的风。第三个领域涉及对极地低压的研究，极地低压是一种小型强气旋，主要在极地地区的海洋上空发展。对于所有三个主题，PI将使用观测和模型生成的数据集。后者将来自国家大气研究中心用中尺度模式进行的模拟。

The overall goal of this research project is to clarify our understanding of how cyclones (storms) and related atmospheric weather systems form and intensify. The results are likely to contribute to improved skill in weather prediction. Three phenomena will be investigated. The first are extratropical cyclones, particularly cases where there is rapid intensification. The PI hopes to identify the factors which cause cyclogenesis to be explosive. A second area of study is directed at mesoscale solitary gravity waves. These waves represent disturbances with the cyclone that typically are 100 kilometers wide and one hour in duration and cause very rapid pressure falls and sometimes dangerous winds. The third area involves the study of polar lows which are small intense cyclones that develop primarily over the ocean in polar regions. For all three topics, the PI will employ both observational and model- generated data sets. The latter will be taken from simulations done with mesoscale model at the National Center for Atmospheric Research.