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Modulation of monthly precipitation patterns over East China by the Pacific Decadal Oscillation

Author

Listed:
  • Qing Yang

    (Chinese Academy of Sciences)

  • Zhuguo Ma

    (Chinese Academy of Sciences)

  • Baoliang Xu

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

Abstract

Previous studies suggest that the Pacific Decadal Oscillation (PDO) modulates annual and summer precipitation patterns over East China. In this study, the effect of the PDO on monthly precipitation anomalies over this region is investigated. The new results show that the effect is month-dependent. The well-known North–South dipole patterns of annual precipitation are dominated by the July–August precipitation. In other months, the corresponding patterns vary in strength, position, and even shape. For example, the May and June precipitation patterns show opposite signs to the July–August or annual mean patterns, whereas the September–December monthly precipitation anomalies show a triple pattern. Monthly precipitation patterns over East China are largely determined by large-scale moisture transport controlled by atmospheric circulation. The PDO affects East China precipitation patterns by modulating the large-scale circulation pattern.

Suggested Citation

  • Qing Yang & Zhuguo Ma & Baoliang Xu, 2017. "Modulation of monthly precipitation patterns over East China by the Pacific Decadal Oscillation," Climatic Change, Springer, vol. 144(3), pages 405-417, October.
    • Handle: RePEc:spr:climat:v:144:y:2017:i:3:d:10.1007_s10584-016-1662-9
    DOI: 10.1007/s10584-016-1662-9
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    Cited by:

    1. Zong-Liang Yang & Zhuguo Ma, 2017. "Foreword to the special issue: decadal scale drought in arid regions," Climatic Change, Springer, vol. 144(3), pages 389-390, October.

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