SPEEDY MODEL (Molteni
2003)
¥ T30L7 global spectral model
¥ total 96x48 grid points on each
level
¥ State variables u,v,T,Ps,q
Data
Assimilation: LETKF
Methods to handle model
errors
1)Multiplicative/additive
inflation
2)Dee & daSilva
(1998) (DdS)
3)Low-dimensional method
(LDM, Danforth et al, MWR, 2007)
Dense Observations