NEDAS.assim_tools.covariance.ensemble module
- NEDAS.assim_tools.covariance.ensemble.ensemble_covariance(state_ens, obs_ens)
Compute ensemble-based covariance between state and observation variables Inputs: - state_ens: np.ndarray State variables, first dimension is ensemble members - obs_ens: np.ndarray Observation variables, first dimension is ensemble members Return: - state_variance: np.ndarray, shape is same as state_ens.shape[1:] Variance of state variables - obs_variance: np.ndarray, shape is same as obs_ens.shape[1:] Variance of observation variables - corr: np.ndarray, shape is state_ens.shape[1:]+obs_ens.shape[1:] Correlation between state and observation variables