AHW (WRF-ARW): (Vortex) Initialization

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Assimilation SystemGFDLGFSGFS+AMSUAMSU+BogusMesoscale & Microscale Meteorological Division / NCAR 22(from Z.-Q. Liu)
• Advantage:ooPros and ConsGood mathematical baseComputationally efficient (relative to other moresophisticate techniques)• Disadvantage:oooBackground error covariance not changing withtime and flow regime, and can be problematic forTCSingle time-level can be limitingMay take time to learn to use the technique wellMesoscale & Microscale Meteorological Division / NCAR 23
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: Method• When 3DVar is applied to
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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