Lorenz models 96 and 63 (parallelized) with PDAF - EnKF filter
Implementation uses the offline mode of PDAF and restart files for assimilation and model updates
observations are created on the fly
initial ensemble generated by:
EnsembleState_i = InitState + r, r = N(0,sigma)
EnsembleState_i -> i-th ensemble state
InitState -> init state defined beforehand (e.g. [0,0,0.1,0,0,...], zero with small perturbation)