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Visualizing and verifying probabilistic forecasts of the Madden-Julian Oscillation

机译:可视化和验证Madden-Julian振荡的概率预测

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摘要

We describe a new approach for presenting probabilistic forecasts of the Madden-Julian Oscillation (MJO) based on the community standard Real-time Multivariate MJO (RMM) index, using forecasts from version 2 of the Predictive Ocean Atmosphere Model for Australia. This new display overcomes the difficulty of interpreting a dispersive ensemble plume and directly quantifies the probability for the MJO to occur in each of its eight RMM-defined phases as well as the weak phase. Beyond monitoring and interpreting predictions of the MJO, this new approach also provides a basis for forecast verification using probability-based skill scores. Here we present a clear and concise quantitative summary of this innovative method for accessing probability of the state of the MJO in an ensemble forecast. This new method compliments the traditional MJO ensemble forecast display and verification and will benefit global forecasting centers, international MJO working groups, and the World Meteorological Organization Subseasonal to Seasonal Project.
机译:我们描述了一种新的方法,该方法基于社区标准实时多变量MJO(RMM)指数,使用来自澳大利亚“预测性海洋大气模型”第2版的预测,提出了Madden-Julian振荡(MJO)概率预测的新方法。这种新的显示技术克服了解释弥散整体羽状流的困难,并直接量化了MJO在其8个RMM定义阶段以及弱阶段中每个阶段出现的可能性。除了监视和解释MJO的预测之外,这种新方法还为使用基于概率的技能评分进行的预测验证提供了基础。在这里,我们提供了一种新颖,简洁的定量总结,该创新方法用于获取整体预测中MJO状态的概率。这种新方法是对传统MJO集合预报显示和验证的补充,将使全球预报中心,国际MJO工作组以及世界气象组织按季节转换为季节性项目受益。

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