Click here to read the discussion. From the synopsis:
During June 2013, below-average sea surface temperatures (SST) prevailed in the eastern Pacific, while near-average SSTs persisted across the rest of the equatorial Pacific. This ENSO-neutral pattern was also reflected in the Niño indices, which were warmer than -0.5°C in Niño-4 and Niño-3.4 and cooler than -0.5°C in Niño-3 and Niño-1+2 during the month. Meanwhile, the oceanic heat content (average temperature in the upper 300m of the ocean) anomalies increased during June, due to the emergence of above-average subsurface temperatures in the eastern half of the Pacific. Across the equatorial Pacific, the low-level winds remained near average, while weak upper-level westerly anomalies persisted in the central Pacific. Convection remained enhanced over Indonesia and weakly suppressed near the International Date Line. Collectively, these atmospheric and oceanic conditions were consistent with ENSO-neutral.