太平洋海温场两种不同时间尺度气候模态的分析

吕俊梅; 琚建华; 张庆云; 曹杰

太平洋海温场两种不同时间尺度气候模态的分析

1.
中国科学院, 大气物理研究所, 北京 100029;云南大学, 大气科学系, 云南昆明 650091;云南大学, 大气科学系, 云南昆明 650091
2.
中国气象局培训中心, 北京 100081
3.
中国科学院, 大气物理研究所, 北京 100029
4.
云南大学, 大气科学系, 云南昆明 650091

基金项目: 国家自然科学基金面上项目(40365001);中国科学院资源环境领域知识创新工程重要方向项目(ZKCX2-SW-210);国家自然科学基金重点项目(40233033);云南大学校内科研项目(2002Q014ZH).

计量
- 文章访问数: 984
- HTML全文浏览量: 4
- PDF下载量: 3091
- 被引次数: 0
出版历程
- 收稿日期: 2004-11-25
- 修回日期: 2005-07-28

The analysis of two climate patterns on different time scales in Pacific sea temperature fields

1.
Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China;Department of Atmospheric Sciences, Yunnan University, Kunming 650091, China;Graduate School of Chinese Academy of Sciences, Beijing 100039, China
2.
China Meteorological Administration Training Centre, Beijing 100081, China
3.
Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China
4.
Department of Atmospheric Sciences, Yunnan University, Kunming 650091, China

摘要

摘要: 利用经验正交函数分解、多元线性回归分析、小波分析和离散功率谱等方法,对太平洋年代际振荡(PDO)和ENSO的关系进行研究,发现太平洋海温场中主要存在着PDO和ENSO两种气候模态.用线性回归分析方法对这两种模态进行分离,结果表明,去除ENSO信息后,太平洋海温变化的关键区出现于北太平洋中纬度地区,PDO的信号很明显;而去除PDO信息后,海温变化的关键区位于赤道中、东太平洋地区,ENSO的信号较明显,此时ENSO循环不具有年代际振荡的特征,表明PDO对ENSO的调制作用是ENSO事件具有年代际变化特征的重要原因.
- 太平洋年代际振荡(PDO) /
- ENSO循环 /
- 气候模态 /
- 分离
Abstract: Some techniques,such as,empirical orthogonal function analysis,multivariate linear regression,wavelet analysis and discrete power spectral method,are used to study the relations between Pacific Decadal Oscillation(PDO) and ENSO.It is found that PDO and ENSO are two dominant climatic patterns existing in Pacific SST fields.Regression analysis is applied to separate these two kind of climatic patterns.The results show that the key area of SST variability locates in mid-latitude North Pacific Ocean and the signals of PDO are obvious after the signature of ENSO is removed from Pacific SST fields,whereas the key area locates in central and eastern equatorial Pacific Ocean and the signals of ENSO are evident after the signature of PDO is removed.Under the latter circum stance the ENSO cycle no long appears the charact eristics of interdecadal variations.This suggests that the modulating action of PDO plays an important role in the cause of inter decadal variations of ENSO cycle.
- Pacific Decadal Oscil lation /
- ENSO cycle /
- climate pattern /
- separation

HTML全文

参考文献(23)

MANTUA N J,HARE S R,ZHANG Y,et al.A Pacific interdecadal climate oscillation with impacts on salmon production[J].Bull Amer Meteor Soc,1997,78:1 069-1 079.

LATIF M,BARNETT T P.Causes of decadal climate variability over the North Pacific and North America[J].Science,1994,266:634-637.

TRENBERTH K E.Recent observed interdecadal climate changes in the Northern Hemisphere[J].Bull Amer Meteor Soc,1990,71:988-993.

徐建军,王东晓.印度洋-太平洋海温的年际、年代际异常及其对亚洲季风的影响[J].海洋学报,2000,22(3):34-43.

杨修群,朱益民,谢倩,等.太平洋年代际振荡的研究进展[J].大气科学,2004,28(6):979-992.

ZHU Y,YANG X.Joint propagating patterns of SST and SLP anomalies in the North Pacific on bidecadal and pentadecadal timescales[J].Adv Atmas Sci,2003,20(5):694-710.

TORRENCE C,WEBSTER P J.Interdecadal changes in the ENSO-Monsoon system[J].J Climate,1999,12(8):2 679-2 690.

莫如平.中国降水、气温的年际振荡及其与厄尔尼诺的联系[J].海洋学报,1989,11(2):16-24.

李超.埃尔尼诺对我国汛期降水的影响[J].海洋学报,1992,14(5):45-51.

魏凤英,张先恭.埃尔尼诺与中国东部夏季降水异常分布[J].海洋学报,1994,16(6):58-65.

陈永利,胡敦欣.南海夏季风爆发与西太平洋暖池区热含量及对流异常[J].海洋学报,2003,25(3):20-31.

KUMAR K K,RAJAGOPALAN B,CANE M A.On the weakening relationship between the Indian monsoon and ENSO[J].Science,1999,284:2 156-2 159.

WANG B.Interdecadal changes in El Nino onset in the last four decades[J].J Climate,1995,8:267-285.

GERSHUNOV A,BARNETT T P.Interdecadal modulation of ENSO teleconnection[J].Bull Amer Meteor Soc,1998,79:2 715-2 725.

POWER S,CASEY T,FOLLAND C,et al.Interdecadal modulation of the impact of ENSO on Australia[J].Climate Dyn,1999,15:319-324.

朱益民,杨修群.太平洋年代际振荡与中国气候变率的联系[J].气象学报,2003,61(6):641-654.

ZHANG Y,WALLACE J M,BATTISTI D S.ENSO-like interdecadal variability:1900-93[J].J Climate,1997,10:1 004-1 020.

黄嘉佑.气象统计分析与预报方法[M].北京:气象出版社,2000.38-49.

CLARK C O,COLE J E,WEBSTER P J.Indian Ocean SST and Indian summer rainfall:predictive relationships and their decadal variability[J].J Climate,2000,13:2 503-2 519.

TORRENCE C,COMPO G P.A practical guide to wavelet analysis[J].Bull Amer Meteor Soc,1998,1:61-78.

MINOBE S.A 50-70 year climatic oscillation over the North Pacific and North America[J].Geophys Res Let,1997,6:683-686.

MINOBE S.Resonance in bidecadal and pentadecadal climate oscillations over the North Pacific:Role in climatic regime shifts[J].Geophys Res Let,1999,7:855-858.

谷德军,王东晓,李春晖.PDO源地与机制的若干争论[J].热带气象学报,2003,19(增):136-144.

施引文献

资源附件(0)

访问统计