Regressed SST anomaly onto different El Niño indices. Results are based on NOAA ERSST v4 during 1948-2016. Monthly anomalies are calculated relative to the climatology of 1950-1999.

Annual

SST Annual

Dec - Feb

SST: December to February

Mar – May

SST: March to May

Jun – Aug

SST: June to August

Sep – Nov

SST: September to November