Browsing: Update

During the April-June 2026 (AMJ 2026) season, the equatorial tropical Pacific shifted into El Niño conditions, recording a seasonal mean Niño 3.4 index value of 1.0°C. Within the AMJ season, the monthly Niño 3.4 index exhibited a rapid warming trajectory, rising sharply from 0.5°C in April to 1.6°C in June (Table 1).