Figure 6 : Time series of November-January averaged climate indices.

From: January 2016 extensive summer melt in West Antarctica favoured by strong El Niño

Figure 6

(a) Southern Annular Mode Index. (b) Equatorial Southern Oscillation Index. The series span 1957–2016. The year corresponds to the month of January. The last data point is for November 2015-January 2016.