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

L&#252; Jun-mei; JU Jian-hua; ZHANG Qing-yun; CAO Jie

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Lü Jun-mei, JU Jian-hua, ZHANG Qing-yun, CAO Jie. The analysis of two climate patterns on different time scales in Pacific sea temperature fields[J]. Haiyang Xuebao, 2005, 27(5): 30-37.

Citation:

Lü Jun-mei, JU Jian-hua, ZHANG Qing-yun, CAO Jie. The analysis of two climate patterns on different time scales in Pacific sea temperature fields[J]. Haiyang Xuebao, 2005, 27(5): 30-37.

Lü Jun-mei, JU Jian-hua, ZHANG Qing-yun, CAO Jie. The analysis of two climate patterns on different time scales in Pacific sea temperature fields[J]. Haiyang Xuebao, 2005, 27(5): 30-37.

Citation:

Lü Jun-mei, JU Jian-hua, ZHANG Qing-yun, CAO Jie. The analysis of two climate patterns on different time scales in Pacific sea temperature fields[J]. Haiyang Xuebao, 2005, 27(5): 30-37.

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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

Received Date: 2004-11-25
Rev Recd Date: 2005-07-28

Abstract

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

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References(23)

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