An Evaluation of the Performance of the CWB NFS Model for Warm-Season Rainfall Distribution and Propagation over the East Asian Continent

  • Author(s): Chung-Chieh Wang, Hsiao-Ling Huang, Jui-Lin Li, Tzay-Ming Leou, and George Tai-Jen Chen
  • DOI: 10.3319/TAO.2010.07.13.01(A)
  • Keywords: Quantitative precipitation forecast, Warm season, Non-hydrostatic forecast system, Model evaluation
  • Citation: Wang, C. C., H. L. Huang, J. L. Li, T. M. Leou, and G. T. J. Chen, 2011: An evaluation of the performance of the CWB NFS model for warm-season rainfall distribution and propagation over the East Asian continent. Terr. Atmos. Ocean. Sci., 22, 49-69, doi: 10.3319/TAO.2010.07.13.01(A)

This study evaluates the performance of the regional operational model at Central Weather Bureau (CWB), the Non-hydrostatic Forecast System (NFS), in capturing the general distribution and eastward propagation of warm-season rainfall within the diurnal cycle in Hovmoler (longitude-time) space over the East Asian continent. The Tropical Rainfall Measuring Mission (TRMM) 0.25° rain-rates are used to evaluate the NFS coarse domain (45 km) 12 - 36 h QPFs during May - August, 2002 - 2005 both qualitatively and quantitatively.

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