Object-based evaluation of a numerical weather prediction model’s performance through forecast storm characteristic analysis

作者: Huaqing Cai , Robert E. Dumais

DOI: 10.1175/WAF-D-15-0008.1

关键词: MeteorologyQuantitative precipitation forecastForecast skillIntegrated Forecast SystemClimatologyGlobal Forecast SystemRapid update cycleForecast verificationRapid RefreshComputer scienceTropical cyclone forecast model

摘要: AbstractTraditional pixel-versus-pixel forecast evaluation scores such as the critical success index (CSI) provide a simple way to compare performances of different forecasts; however, they offer little information on how improve particular forecast. This paper strives demonstrate what additional an object-based tool Method for Object-Based Diagnostic Evaluation (MODE) can in terms assessing numerical weather prediction models’ convective storm forecasts. Forecast attributes evaluated by MODE this include size, intensity, orientation, aspect ratio, complexity, and number storms. Three weeks High Resolution Rapid Refresh (HRRR) model’s precipitation forecasts during summer 2010 over eastern two-thirds contiguous United States were example methodology. It is found that HRRR model was able characteristics rather well either ...

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