AHW (WRF-ARW): (Vortex) Initialization

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TC <strong>Initialization</strong> Using 4DVarMesoscale & Microscale Meteorological Division / NCAR 24
Method• The difference between 3DVar and fourdimensional(4DVar) data assimilation is theuse of a numerical forecast model• The added time dimension provides flowdependentinformation• Can use observation in a time windowRef: Huang et al. (2009)Mesoscale & Microscale Meteorological Division / NCAR 25
Page 1 and 2: AHW (WRF-ARW):(Vortex) Initializati
Page 3 and 4: ARW (Vortex) Initialization Methods
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: • Advantage:ooPros and ConsGood m
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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