Oscillations

Decreased ocean surface temperature

No change in trade winds

Stronger than normal trade winds

Weakening and reversal of trade winds

Complex weather patterns resulting from variations in ocean temperatures in the Equatorial Pacific Region.

Simple weather patterns resulting from variations in ocean temperatures in the Atlantic Ocean.

Weather patterns resulting from variations in air pressure in the Arctic Region.

Simple weather patterns resulting from variations in ocean temperatures in the Indian Ocean.

Unusual warming of surface waters in the eastern tropical Pacific Ocean.

Unusual cooling of surface waters in the eastern tropical Pacific Ocean.

Unusual warming of surface waters in the Atlantic Ocean.

Unusual cooling of surface waters in the Indian Ocean.

Unusual cooling of the tropical eastern Pacific.

Unusual warming of the tropical eastern Pacific.

Unusual cooling of the Atlantic Ocean.

Unusual warming of the Indian Ocean.