Asymmetry Between Positive and Negative Phases of the Pacific Meridional Mode: A Contributor to ENSO Transition Complexity

被引:14
作者
Fan, Hanjie [1 ,2 ]
Wang, Chunzai [1 ,2 ]
Yang, Song [3 ,4 ]
机构
[1] Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou, Peoples R China
[2] Chinese Acad Sci, South China Sea Inst Oceanol, Global Ocean & Climate Res Ctr, Guangzhou, Peoples R China
[3] Sun Yat sen Univ, Sch Atmospher Sci, Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai, Peoples R China
[4] Sun Yat sen Univ, Guangdong Prov Key Lab Climate Change & Nat Disast, Zhuhai, Peoples R China
基金
中国国家自然科学基金;
关键词
SEASONAL FOOTPRINTING MECHANISM; EL-NINO; INTERANNUAL VARIABILITY; OCEAN; WIND;
D O I
10.1029/2023GL104000
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
The Pacific Meridional Mode (PMM) plays a critical role in affecting El Nino-Southern Oscillation (ENSO). This study examines the phase asymmetry of PMM events triggered by tropical and extratropical forcings, namely successive and stochastic events, respectively. It is shown that successive events exhibit negative asymmetry due to stronger trigger in the negative phase, while stochastic events display positive asymmetry due to stronger growth in the positive phase. The opposite phase asymmetry of two types of events respectively results in more frequent persistent La Nina events than El Nino events and more frequent episodic El Nino events than La Nina events, which increase ENSO transition complexity. This research provides a comprehensive understanding of PMM asymmetry and reconciles conflicting perspectives from previous studies. Additionally, the newly proposed contribution of positively asymmetric stochastic PMM events to more frequent episodic El Nino events in this study may enhance our comprehension of ENSO transition complexity.
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页数:9
相关论文
共 38 条
  • [1] The Impact of Extratropical Atmospheric Variability on ENSO: Testing the Seasonal Footprinting Mechanism Using Coupled Model Experiments
    Alexander, Michael A.
    Vimont, Daniel J.
    Chang, Ping
    Scott, James D.
    [J]. JOURNAL OF CLIMATE, 2010, 23 (11) : 2885 - 2901
  • [2] The Pacific Meridional Mode and ENSO: a Review
    Amaya, Dillon J.
    [J]. CURRENT CLIMATE CHANGE REPORTS, 2019, 5 (04) : 296 - 307
  • [3] The North Pacific Pacemaker Effect on Historical ENSO and Its Mechanisms
    Amaya, Dillon J.
    Kosaka, Yu
    Zhou, Wenyu
    Zhang, Yu
    Xie, Shang-Ping
    Miller, Arthur J.
    [J]. JOURNAL OF CLIMATE, 2019, 32 (22) : 7643 - 7661
  • [4] Role of nonlinear ocean dynamic response to wind on the asymmetrical transition of El Nino and La Nina
    An, Soon-Il
    Kim, Ji-Won
    [J]. GEOPHYSICAL RESEARCH LETTERS, 2017, 44 (01) : 393 - 400
  • [5] Triggering of El Nino onset through trade wind-induced charging of the equatorial Pacific
    Anderson, Bruce T.
    Perez, Renellys C.
    Karspeck, Alicia
    [J]. GEOPHYSICAL RESEARCH LETTERS, 2013, 40 (06) : 1212 - 1216
  • [6] BATTISTI DS, 1989, J ATMOS SCI, V46, P1687, DOI 10.1175/1520-0469(1989)046<1687:IVIATA>2.0.CO
  • [7] 2
  • [8] Pacific meridional mode and El Nino-southern oscillation
    Chang, Ping
    Zhang, Li
    Saravanan, R.
    Vimont, Daniel J.
    Chiang, John C. H.
    Ji, Link
    Seidel, Howard
    Tippett, Michael K.
    [J]. GEOPHYSICAL RESEARCH LETTERS, 2007, 34 (16)
  • [9] Analogous Pacific and Atlantic meridional modes of tropical atmosphere-ocean variability
    Chiang, JCH
    Vimont, DJ
    [J]. JOURNAL OF CLIMATE, 2004, 17 (21) : 4143 - 4158
  • [10] ENSO and meridional modes: A null hypothesis for Pacific climate variability
    Di Lorenzo, E.
    Liguori, G.
    Schneider, N.
    Furtado, J. C.
    Anderson, B. T.
    Alexander, M. A.
    [J]. GEOPHYSICAL RESEARCH LETTERS, 2015, 42 (21) : 9440 - 9448