[填空题]In an El Nino, the winds pushing the water around get weaker. As a result, some of the warm water piled up in the west slumps back down to the east, and not as much cold water gets pulled up from below.

[填空题]In an El Nino, the winds pushing the water around get weaker. As a result, some of the warm water piled up in the west slumps back down to the east, and not as much cold water gets pulled up from below.

[填空题]A strong El Nino is often associated with wet winters over the southern U.S., as well as drought in Indonesia, Philippines and Australia.

[填空题]When El Nino reaches a place, the temperature there would change a great deal.

[填空题]El Nino occurs irregularly and we sometimes can ______.

[填空题]An El Nino causes a permanent change in the climate of the Atlantic Ocean, in the region around the equator.

[填空题]

El Nino is name given to the mysterious and often unpredictable change in the climate of the world. This strange （1）  happens every five to eight years. It starts in the Pacific Ocean and is thought to be caused by a failure in the trade winds (信风)，which affects the ocean currents driven by these winds. As the trade winds lessen in （2）, the ocean temperatures rise, causing the Peru current flowing in from the east to warm up by as much as 5℃.
The warming of the ocean has far-reaching effects. The hot, humid (潮湿的) air over the ocean causes severe （3） thunderstorms. The rainfall is increased across South America. （4） floods to Peru. In the West pacific, there are droughts affecting Australia and Indonesia. So while some parts of the world prepare for heavy rains and floods, other parts face drought, poor crops and （5）.
El Nino usually lasts for about 18 months. The 1982-83 El Nino brought the most （6） weather in modern history. Its effect was worldwide and it l