El Niño and La Niña Explained usooceangov

What is the name given to the warmer ocean condition that brings flooding to the Southern United States and warmer, drier conditions over parts of the Pacific northwest, northern U.S. and Canada?

• Trade winds

• El Niño

• La Niña

• Normal conditions

What happens when the trade winds weaken and the warm surface water moves eastward?

• Flooding in the Southern United States

• Upwelling of cool water towards the surface in the eastern Pacific

• Intensification and southward shift of the jet stream

• Reduced upwelling of cold water off the coast of South America

What is the name given to the unusually cold conditions in the tropical Pacific that displace the Jet Stream northward?

• El Niño

• La Niña

• Normal conditions

• Trade winds

What is the impact of El Niño and La Niña on food production, water supply, and human health?

• No impact at all

• Only in the US

• Only in the Pacific Northwest

• In many parts of the globe

What is the name given to the trade winds blowing the warm water back into the western Pacific and restarting the upwelling of cool water towards the surface in the eastern Pacific?

• Normal conditions

• Intensification and southward shift of the jet stream

• El Niño

• La Niña