Multivariate ENSO Index (MEI)
This webpage consists of seven main parts, three of which are updated every month:
1. A short description of the Multivariate ENSO Index (MEI);
2. Historic La Niña events since 1950;
3. Historic El Niño events since 1950;
4. MONTHLY UPDATED MEI loading maps for the latest season;
5. MONTHLY UPDATED MEI anomaly maps for the latest season;
6. MONTHLY UPDATED Discussion of recent conditions;
7. Publications and MEI data access.