| Ensemble Prediction System | GEFS |
| Model Core | GSM |
| Reforecast Period | 1999-2016 |
| Reforecast Frequency | Every Wednesday (00z) |
| Ensemble Size | 11 members (1 control and 10 perturbations) |
| Forecast Length | 35 days |
| Resolution | T574L64 (0-192hrs); T382L64 (192-840hrs) |
| SST | CFSv2 bias-corrected predicted daily SST |
| Convection Physics | Updated Convection Scheme (Han et al. 2017) |
| Stochastic Physics | SPPT+SKEB+SHUM SPPT of the lowest 4 model levels are tapered |
| Initial Conditions | 199901-201012: CFSR+BV-ETR 201101-201511: GSI+BV-ETR 201512-201612: GSI+EnKF |