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Process-oriented statistical-dynamical evaluation of LM precipitation forecasts

机译:LM降水预报的面向过程的统计动力学评估

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The objective of this study is the scale dependent evaluation of precipitation forecasts of the Lokal-Modell (LM) from the German Weather Service in relation to dynamical and cloud parameters. For this purpose the newly designed Dynamic State Index (DSI) is correlated with clouds and precipitation. The DSI quantitatively describes the deviation and relative distance from astationary and adiabatic solution of the primitiveequations.A case study and statistical analysis of clouds and precipitation demonstrates the availability of the DSI as a dynamical threshold parameter. This confirms the importance of imbalances of the atmospheric flow field, which dynamically induce the generation of rainfall.
机译:这项研究的目的是根据德国气象局的动态和云参数对Lokal-Modell(LM)的降水预报进行尺度依赖评估。为此,新设计的动态状态指数( DSI )与云和降水相关。 DSI 定量地描述了原始方程组与静态和绝热解的偏差和相对距离。案例研究和对云层和降水的统计分析表明 DSI 作为动态阈值参数。这证实了大气流场失衡的重要性,这种失衡会动态地引起降雨的产生。

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