World Meteorological Organization × UNEP/GRID-Geneva

About

A scroll story on the 2026 El Niño, prepared by UNEP/GRID-Geneva with the World Meteorological Organization. Forecast values are drawn dashed, apart from observations.

Data as of 27 October 2026.

Data

  • Niño indices: NOAA CPC weekly OISST v2.1 and Oceanic Niño Index (1991–2020 base)
  • Ocean fields: Copernicus Marine physics, biogeochemistry and wind
  • Coral heat stress: NOAA Coral Reef Watch
  • Platforms: Argo GDAC , GTMBA

Method

Maps are rendered in the browser from GeoVideo archives of the source products. Index and section values are computed from the same Zarr stores; the scripts are in the story repository.