NCEP implemented a statistical postprocessing algorithm (i.e., the decaying averaging bias-correction method) to calibrate global ensemble forecasts in 2006. The bias-correction method is applied to the NCEP and CMC global ensembles. The operational NCEP/GEFS system configuration is described in Toth et al. (2012) and Wei et al. (2008). The 20-member ensembles are produced at T126L28 horizontal and vertical resolutions. The perturbations of the initial conditions are from the ensemble transform with rescaling (ETR) technique. The operational CMC ensemble is described in Charron et al. (2010). A single dynamical core [i.e., the Global Environmental Multiscale (GEM) model] is used to produce the ensembles. A multi-parameterization approach and stochastic perturbations are used in order to sample model error for the 20 members of the ensembles. Due to the different ensemble configurations, the bias estimation and correction processes of NCEP/GEFS and CMC/GEFS will be adjusted to meet their specific characteristics