AHW (WRF-ARW): (Vortex) Initialization

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Introduction• Vortex initialization is very important tohurricane prediction• It is a challenging task, hence it is aresearch area• ARW supports a few ways to do initializationfor hurricanesooSupport researchers’ needFlexibilityMesoscale & Microscale Meteorological Division / NCAR 2
ARW (Vortex) Initialization Methods• Use data from other models directly• TC bogussing via objective analysis• TC relocation with previous forecast• TC relocation and bogussing• Initialization via obs and analysis nudging• Initialization via the use of 3DVar• Initialization via the use of 4DVar• Initialization via EnKFMesoscale & Microscale Meteorological Division / NCAR 3
Page 1: AHW (WRF-ARW):(Vortex) Initializati
Page 5 and 6: Supported Data Sources• GFS / FNL
Page 7 and 8: Method• Based on technique of obj
Page 9 and 10: TC RelocationUsing Previous Model F
Page 11 and 12: Pros and Cons• Advantage:o Easy t
Page 13 and 14: Method• ARW V3.1 supports a simpl
Page 15 and 16: • Advantage:ooPros and ConsEasy t
Page 17 and 18: Method• Based on observation and
Page 19 and 20: TC Bogussing Using 3DVarMesoscale &
Page 21 and 22: Method• When 3DVar is applied to
Page 23 and 24: • Advantage:ooPros and ConsGood m
Page 25 and 26: Method• The difference between 3D
Page 28 and 29: Track and Intensity Forecast on Aug
Page 30 and 31: TC Initialization Using EnKFMesosca
Page 32 and 33: Assimilation System• WRF ARW (v3.
Page 34 and 35: Cycling Error for Position and Inte
Page 36 and 37: Intensity Forecast for ErikaMesosca
Page 38 and 39: Pros and Cons• Advantage:o No bog

AHW (WRF-ARW): (Vortex) Initialization

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