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)