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首页> 外文期刊>Weather and forecasting >Multivariate Self-Organizing Map Approach to Classifying Supercell Tornado Environments Using Near-Storm, Low-Level Wind and Thermodynamic Profiles
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Multivariate Self-Organizing Map Approach to Classifying Supercell Tornado Environments Using Near-Storm, Low-Level Wind and Thermodynamic Profiles

机译:使用近风暴,低水平风和热力学型材对超级电池龙卷风环境进行分类的多变量自组织地图方法

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摘要

Self-organizing maps (SOMs) have been shown to be a useful tool in classifying meteorological data. This paper builds on earlier work employing SOMs to classify model analysis proximity soundings from the near-storm environments of tornadic and nontornadic supercell thunderstorms. A series of multivariate SOMs is produced wherein the input variables, height, dimensions, and number of SOM nodes are varied. SOMs including information regarding the near-storm wind profile are more effective in discriminating between tornadic and nontornadic storms than those limited to thermodynamic information. For the best-performing SOMs, probabilistic forecasts derived from matching near-storm environments to a SOM node may provide modest improvements in forecast skill relative to existing methods for probabilistic forecasts.
机译:自组织地图(SOM)已被证明是分类气象数据的有用工具。 本文在早期的工作中建立了索麦斯,以分类龙卷风和顿涅尔超级雷暴的近风暴环境的模型分析邻近探测。 产生一系列多变量SOM,其中改变了输入变量,高度,尺寸和SOM节点的数量。 索细数据库包括关于近风暴风轮廓的信息在龙头和顿路风暴之间比限于热力学信息的差异更有效。 对于最佳性能的SOM,从匹配近风暴环境匹配到SOM节点的概率预测可以为预测技术提供适度的改进,相对于概率预测的现有方法。

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