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西北太平洋台风生成频次与南极涛动的关系 被引量:52

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摘要 研究了西北太平洋台风生成频次(WNPTN)和南极涛动(AAO)的关系,发现6~9月AAO和西北太平洋台风生成频次(WNPTN)具有显著的反相关关系(1949~1998年期间年际变化的相关系数为-0.48).还分析了和AAO的变化相联系的热带西太平洋大气环流和海温的变化,结果表明:当AAO处于正位相时,西北太平洋区纬向风的垂直切变幅度加大,对流层低层为异常反气旋环流并且涡度异常为负值,而高层为异常气旋环流并且涡度异常为正值,海表温度降低,这些变化均不利于台风生成和发展.反之亦然.
作者 王会军 范可
出处 《科学通报》 EI CAS CSCD 北大核心 2006年第24期2910-2914,共5页 Chinese Science Bulletin
基金 国家自然科学基金(批准号:40631005,40620130113) 中国科学院创新优秀团队计划的资助.
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