Even before we know when or how a particular El Niño or La Niña is going to evolve, we can say something about the regional and global effects it is likely to have due to teleconnections: physical relationships that result from the dynamics of the atmosphere and ocean that impact global weather patterns.

Key Moments in El Niño History, a Blog from Bob by Bob Henson

With more than a quarter century of writing about NCAR's science, Bob Henson, one of this month's featured ENSO experts, shares what he recalls about its history.

Education Spotlights

El Niño, Source: courtesy of NASA

The El Niño Teaching Box

This Teaching Box combines readings and activities that utilize data to build student understanding of the changes that happen to the Pacific Ocean and atmosphere during an El Niño event.

Grades 3-8