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A Probabilistic Forecast of Wind Speed using Truncated Normal Distribution

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  • URLhttps://db.koreascholar.com/Article/Detail/330241
  • DOIhttps://doi.org/10.14383/cri.2016.11.3.265
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기후연구 (Journal of Climate Research)
건국대학교 기후연구소 (KU Climate Research Institute)
초록

This paper applied the ensemble model output statistics (EMOS) with truncated normal distribution, which are easy to implement postprocessing techniques, to calibrate probabilistic forecasts of wind speed that take the form of probability density functions. We also considered the alternative implementations of EMOS, which were EMOS exchangeable model and reduced EMOS model. These techniques were applied to the forecasts of wind speed over Pyeongchang area using 51 members of the Ensemble Prediction System for Global (EPSG). The performances were evaluated by rank histogram, mean absolute error, root mean square error and continuous ranked probability score. The results showed that EMOS models with truncated normal distribution performed better than the raw ensemble and ensemble mean. Especially, the reduced EMOS model exhibited better prediction skill than EMOS exchangeable model in most stations of study area.

저자
  • 한근희(공주대학교 응용수학과) | Keunhee Han
  • 김찬식(공주대학교 응용수학과) | Chansik Kim
  • 최준태(국립기상과학원 수치자료응용과) | JunTae Choi
  • 김찬수(공주대학교 응용수학과) | Chansoo Kim