1 Erratum to: Clim Dyn (2014) 43:469–481 DOI 10.1007/s00382-013-1943-1

In the article, we said that “The JJA Niño 3 SST index is defined by the mean SSTA averaged over the region (150°–90°W, 5°S–5°N, right solid box in Fig. 1). Similarly, the JJA Niño 4 SST index is defined using SST over the region (160°E–150°W, 5°S–5°N, left solid box in Fig. 1).” However, the labels “Niño 3” and “Niño 4” are located in the wrong position in the original Fig. 1, even though the Niño 3 and Niño 4 SST indices are correctly calculated in the study. Below is the new Fig. 1.

Fig. 1
figure 1

Representation of the regions employed to calculate the indices used in this study, including Niño3 SST index, Niño4 SST index and western north Pacific summer monsoon index