A simple linear-regression ENSO forecast model is developed based on the ocean and atmosphere conditions, See An ENSO prediction approach based on ocean conditions and ocean-atmosphere coupling (2017) Clim. Dyn. 48, 2025-2044. for further details

8-month and 6-month Nino3.4 SST anomaly forecast

The forecasted Nino3.4 SST anomaly based on the GODAS data forecasted from 2016 April
The forecasted Nino3.4 SST anomaly based on the GODAS data from 1981