Chinese Science Bulletin

, Volume 51, Issue 1, pp 75–79

Relationship between Arctic Oscillation and Pacific Decadal Oscillation on decadal timescale

  • Sun Jianqi 
  • Wang Huijun 
Articles

DOI: 10.1007/s11434-004-0221-3

Cite this article as:
Sun, J. & Wang, H. CHINESE SCI BULL (2006) 51: 75. doi:10.1007/s11434-004-0221-3

Abstract

The relationship between the Pacific Decadal Oscillation (PDO) and the Arctic Oscillation (AO) on decadal timescale in the extended winter (November–March) is investigated in this study. The results indicate that AO plays an important role in the low frequency variability of PDO. When AO leads PDO by 7–8 years, the lagging correlation between them becomes the strongest with correlation coefficient 0.77. The leading decadal variability of AO pro-vides a valuably precursory signal for predicting the variability of PDO. The results of regression and lagging correlation reveal the possible mechanism for the AO-PDO coupling: A strong AO would lead to an enhanced Aleutian Low that is linked to PDO by ocean-atmosphere interaction in the North Pacific, and vice versa.

Keywords

Pacific Decadal OscillationArctic OscillationAleutian Low

Copyright information

© Science in China Press 2006

Authors and Affiliations

  • Sun Jianqi 
    • 1
    • 2
  • Wang Huijun 
    • 1
  1. 1.Nansen-Zhu International Research Centre (NZC), Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina
  2. 2.Graduate School of Chinese Academy of SciencesBeijingChina