understanding el niño and la niña normal conditions: upwelling off the coast of peru, warm water...

Understanding El Niño and La Niña

Normal conditions: upwelling off the coast of Peru, warm water “piled up” in the Western Pacific

Strong upwelling

Normal conditions: upwelling off the coast of Peru, warm water “piled up” in the Western Pacific

Normal conditions

El Niño conditions:surface current reversed, pushing warm water toward the Eastern PacificUpwelling repressed Unusually warm water across Equatorial Pacific

El Niño conditions:surface current reversed, pushing warm water toward the Eastern PacificUpwelling repressed Unusually warm water across Equatorial Pacific

La Niña: Stronger trade Winds than normal, causing a strong upwelling of cold water in the Eastern Pacific

Developing La Niña after an El Niño

Declared El Niño related disasters, 1998

General: http://earthguide.ucsd.edu/virtualmuseum/climatechange1/11_1.shtmlHealth effects :https://apps.who.int/inf-fs/en/fact192.htmlFisheries disruptions,,Seabirds, marine mammals: http://www.elnino.noaa.gov/impacts.html