【摘 要】
：
在第二部分,我们研究了中等和较弱El Ni(n)o的衰减过程. 结果表明,对中等El Ni(n)o而言,在其发展阶段和盛期,负异常信号在西太平洋产生,但由于强度不足,在El Ni(n)o盛期之后
【机 构】
：
国家气候中心,中国科学院大气物理研究所
论文部分内容阅读
在第二部分,我们研究了中等和较弱El Ni(n)o的衰减过程. 结果表明,对中等El Ni(n)o而言,在其发展阶段和盛期,负异常信号在西太平洋产生,但由于强度不足,在El Ni(n)o盛期之后迅速衰减,这是一种夭折的类西太平洋振子过程. 因此,与强El Ni(n)o不同,中等El Ni(n)o衰减进入平常态. 而较弱El Ni(n)o以截然不同的另一种方式进行位相转换,伴随东南太平洋副高的加强和西移,东风异常和海表温度负异常自赤道东太平洋向西扩展,这是一种平流模态过程,导致较弱El Ni(n)o衰减进入La Ni(n)a.
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