厄尔尼诺与拉尼娜.ppt

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1、厄尔尼诺与拉尼娜 Still waters run deep.流静水深流静水深,人静心深人静心深 Where there is life,there is hope。有生命必有希望。有生命必有希望Trade windThe winds blow,the waters flowEl Nino and La Nina-Equatorial Weather PatternsEl Nino is a weather pattern that passes through the Equatorial Pacific Ocean every couple of years(it tends to app

2、ear every three to eight years).El Nino is associated with warmer ocean currents(洋流洋流）El Nino and La Nina-Role ReversalJust like everything else in the world,El Nino has an opposite too.La Nina is a weather system that hits the Pacific Ocean between December and March.La Nina is as unpredictable as

3、El Nino but usually shows up every three to eight years,following an El Nino system.While there are mild winters and flooding associated with El Nino,the complete opposite is true when La Nina arrives;La Nina brings harsh winters with drought and abnormally cold temperatures.James LickJames Lick had

4、 a problem.He was a very rich man and wanted to be remembered after his death.He thought about building a giant pyramid in downtown San Francisco,he thought about a colossus(巨大雕巨大雕像像)on the San Francisco coast before a friend talked him into funding the construction of the largest telescope in the w

5、orld and an astronomy department at the newly formed University of California.If you are willing to go to Californias top Mount Hamilton(at 4212 feet the tallest mountain in the San Francisco Bay area)you can see what$750,000 would buy you for a legacy(遗产）遗产）in the 1880sThe pastNowadaysMore about the topicLets welcome my friend nowHe will introduce The Natioal Climatic Data Center and what the El Nino exactly is.