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Understanding El Niño and La Niña Normal conditions: upwelling off the coast of Peru, warm water “piled up” in the Western Pacific.

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Presentation on theme: "Understanding El Niño and La Niña Normal conditions: upwelling off the coast of Peru, warm water “piled up” in the Western Pacific."— Presentation transcript:

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2 Understanding El Niño and La Niña

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

4 Strong upwelling

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

6 Normal conditions

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

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

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

10 Developing La Niña after an El Niño

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16 Declared El Niño related disasters, 1998

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18 General: Health effects :https://apps.who.int/inf-fs/en/fact192.htmlhttps://apps.who.int/inf-fs/en/fact192.html Fisheries disruptions,,Seabirds, marine mammals:


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