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1997年影响南海的热带气旋异常活动特征及成因分析
引用本文:赵雪,庞海龙,李希茜,宋萍萍.1997年影响南海的热带气旋异常活动特征及成因分析[J].热带海洋学报,2008,27(1):11-15.
作者姓名:赵雪  庞海龙  李希茜  宋萍萍
作者单位:1. 中国海洋大学,山东,青岛,266003;国家海洋局南海预报中心,广东,广州,510300
2. 国家海洋局南海预报中心,广东,广州,510300
摘    要:统计分析了近30年(1976-2005)来影响南海的热带气旋特征,对1997年影响南海的热带气旋异常活动的成因作了进一步的分析.结果表明,El Nino发生后,西北太平洋生成的热带气旋以偏少为主,强度偏强,且热带气旋生成位置偏东,热带低压加强成为热带风暴的平均位置也较多年平均位置偏东;副热带高压强度和Nino 3.4区SST变化趋势基本一致,但副热带高压强度变化落后SST变化6个月左右.由于El Nino事件多发生于上半年,赤道中东太平洋Nino 3.4区SST偏高,当年冬季或次年春夏季往往副热带高压异常偏强;El Nino发生年的次年,暖水向西回涌,西太平洋海温逐渐恢复正常,副高强度偏强.

关 键 词:热带气旋  南海  副热带高压  海表面温度
文章编号:1009-5470(2008)01-0011-05
收稿时间:2006-12-31
修稿时间:2007-07-31

Abnormal incident analysis of tropical cyclones influencing South China Sea in 1997
ZHAO Xue,PANG Hai-long,LI Xi-xi,SONG Ping-ping.Abnormal incident analysis of tropical cyclones influencing South China Sea in 1997[J].Journal of Tropical Oceanography,2008,27(1):11-15.
Authors:ZHAO Xue  PANG Hai-long  LI Xi-xi  SONG Ping-ping
Abstract:Tropical cyclones which have influenced the South China Sea in the past thirty years are counted and analyzed, and further study has been made on the tropical cyclones influencing the South China Sea in 1997. The results showed that after E1 Nino occurred, the tropical cyclones originating from the northwest Pacific tended to be fewer and more intense, and the originating positions were partial to the east. The intensity of the subtropical high and the SST in Nino 3.4 have the same trends in the main, only the change of the subtropical high fall behind the SST change for about six months. Since E1 Nino usually occurred in the first half year, while the SST in Nino 3.4 was on the high side, so the subtropical high in the same winter or the next spring and summer was always stronger. The next year after E1 Nino water returned back to the west Pacific, the SST of the west Pacific gradually returned to subtropical high got intense.
Keywords:tropical cyclone  South China Sea  subtropical high  sea surface temperature occurred  warm normal  and the
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