§ The online (adaptive) estimation of inflation parameter alone
does not work without
estimating the observational errors.
§ Estimating both of the observational errors and the inflation
parameter simultaneously
our approach works well on both the Lorenz-96 and the SPEEDY
global model. It can also be applied to other ensemble based
Kalman filters.
§ SPEEDY experiments show our approach can simultaneously estimate observational
errors for different instruments.
§ Current work shows our method also works in the presence of random model errors.