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热带海洋学报 >

2010 , Vol. 29 >Issue 6: 8 - 14

DOI: https://doi.org/10.11978/j.issn.1009-5470.2010.06.008

海洋水文学

西北太平洋台风数目与海洋热含量的年代际关系分析

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  • 1. 中国科学院南海海洋研究所热带海洋环境动力学重点实验室, 广东 广州 510301; 2. 香港城市大学能源及环境学院
    佳达亚太气候研究中心, 香港 00852
刘钦燕(1976—), 女, 山东省青岛市人, 博士, 从事海洋-大气相互作用相关研究。E-mail: qyliu66@scsio.ac.cn

收稿日期: 2009-04-02

  修回日期: 2010-05-17

  网络出版日期: 2010-12-15

基金资助

广东省联合基金项目(U0733002); 国家自然科学基金项目(40806005); 中国科学院南海海洋研究所青年基金项目(SQ200814)

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Relationship between typhoon activity in the northwestern Pacific and the up-per-ocean heat content on interdecadal time scale

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  • 1. Key Laboratory of Tropical Marine Environmental Dynamics, South China Sea Institute of Oceanology, CAS, Guangzhou 510301, China; 2. Guy Carpenter Asia-Pacific Climate Impact Centre, School of Energy and Environment, City University of Hong Kong, Hong Kong 00852, China
刘钦燕(1976—), 女, 山东省青岛市人, 博士, 从事海洋-大气相互作用相关研究。E-mail: qyliu66@scsio.ac.cn

Received date: 2009-04-02

  Revised date: 2010-05-17

  Online published: 2010-12-15

Supported by

广东省联合基金项目(U0733002); 国家自然科学基金项目(40806005); 中国科学院南海海洋研究所青年基金项目(SQ200814)

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摘要

采用Joint Typhoon Warning Center提供的1945—2003年热带气旋数据对西北太平洋地区(5?—30?N, 121?E—180?)的台风活动进行统计分析, 结果表明西北太平洋的台风活动具有明显的年代际特征。台风数目在1958—1968年表现为高值, 在1970—1980年表现为低值, 在1985—1995年又表现为高值; 并且在1958—1968年这一时段台风的年生成数要多于1985—1995年期间的台风生成数。利用Scripps海洋研究所环境分析中心提供的同期上400m热含量和11个标准层海温数据分析发现, 台风活动与海洋热力变化存在一定的联系。就年代际变化而言, 海温变化对台风数量的影响并不是主要引导因素。西北太平洋台风变化与中太平洋的热含量相联系, 两者表现为正相关。通过赤道垂直温度剖面可以看出, 相对于1970—1980年而言, 1958—1968年和1985—1995年的中太平洋热含量明显增加。中太平洋的热含量增加在1958—1968年主要体现在温跃层的海温增暖, 而在1985—1995年主要体现在海温表层增暖。这意味着在次表层出现的温度暖异常可能是导致在1958—1968这个时间段内台风年生成数多的重要原因。

关键词： 台风; 年代际; 热含量; 次表层温度

本文引用格式

刘钦燕,周文 . 西北太平洋台风数目与海洋热含量的年代际关系分析[J]. 热带海洋学报, 2010 , 29(6) : 8 -14 . DOI: 10.11978/j.issn.1009-5470.2010.06.008

Abstract

The typhoon activity in the northwestern Pacific region (5º-30ºN, 121ºE-180º) is analyzed using the tropical cy-clone data from 1945 to 2003 provided by the Joint Typhoon Warning Center. The results show that the typhoon activity in the northwestern Pacific has evident interdecadal variability. The number of typhoons occurred in 1958-1968 is more than that occurred in 1985-1995, and both numbers are more than that occurred in 1970-1980. Combining the analysis of the up-per-ocean heat content data and temperature data at 11 standard levels provided by the Scripps Institute of Oceanography, it is found that the typhoon activity in the northwestern Pacific has a relationship with the ocean thermal structures. The sea-surface temperature is not the key factor affecting the typhoon number occurred during 1958-1968. The decadal variation of the typhoons occurred in the northwestern Pacific is positively correlated with the upper-ocean heat content in the equatorial central Pacific. There is a sea-surface temperature increase in the central Pacific in 1958-1968 and 1985-1995 compared with 1970-1980 by the mean-temperature profile along the equator, which exists in the surface in 1985-1995 and in the subsurface in 1958-1968. This difference may imply that the subsurface temperature warming played an important role in increased number of typhoon in 1958-1968.

Key words： typhoon; interdecadal variability; upper-ocean heat content; subsurface temperature

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