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中文摘要: 利用厄尔尼诺与行星运动的联系，对厄尔尼诺进行了分类。发现东北夏季低温冷害的发生与厄尔尼诺的类型有关：负极值型和负正极值型厄尔尼诺的发生年几乎与冷害年一一对应，其他类型的厄尔尼诺则很少甚至不发生冷害。统计表明：三大行星（火、木、土）冲日时日心黄纬的负极值年的次年和木星的正极值的前一年及当年，有利于冷害的发生；土星运行到日心黄经为19～121°时，会导致冷害群的发生。
中文关键词: 行星运动，厄尔尼诺，日心黄纬，夏季低温冷害
Abstract:The relationship between the planetary motion and El Nino was used to classify El Nino. It was found that some types of El Nino could cause the summer chilling damage (SCD) in northeast of China,but other types could not. Statistically,SCD happens easily in the next years when one of the three planetary (Mars,Jupiter,Saturn) was opposite to sun at the extreme negative value of helocentric celestial latitude,or in the years when Jupiter was opposite to sun at the extreme positive value of helocentric celestial latitude. A series of SCD can happen when Saturn moves ranging from 19 to 121 degress of celestial longtitude. The time that SCD will happen in future can be predicted.
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引用文本：
叶更新,1998.行星运动与厄尔尼诺、东北夏季低温冷害[J].气象,24(3):9-11.
,1998.Some Relationships between the El Nino and the Summer Chilling Damage in Northeast of China in Association with the Planetary Motion[J].Meteor Mon,24(3):9-11.
叶更新,1998.行星运动与厄尔尼诺、东北夏季低温冷害[J].气象,24(3):9-11.
,1998.Some Relationships between the El Nino and the Summer Chilling Damage in Northeast of China in Association with the Planetary Motion[J].Meteor Mon,24(3):9-11.