Advanced Search
Article Contents

Dynamic Mechanism of Interannual Sea Surface Height Variability in the North Pacific Subtropical Gyre


doi: 10.1007/s003 76-010-0038-8

  • In this study, the dynamic mechanisms of interannual sea surface height (SSH) variability are investigated based on the first-mode baroclinic Rossby wave model, with a focus on the effects of different levels of wind stress curl (WSC). Maximum covariance analysis (MCA) of WSC and SSH anomalies displays a mode with significant WSC anomalies located primarily in the mid-latitude eastern North Pacific and central tropical Pacific with corresponding SSH anomalies located to the west. This leading mode can be attributed to Ekman pumping induced by local wind stress and the westward-propagating Rossby wave driven by large-scale wind stress. It is further found that in the middle latitudes, the SSH anomalies are largely determined by WSC variations associated with the North Pacific Gyre Oscillation (NPGO), rather than the Pacific Decadal Oscillation (PDO). The sensitivity of the predictive skill of the linear first-mode baroclinic model to different wind products is also examined.
  • [1] FANG Changfang*, WU Lixin, and ZHANG Xiang, 2014: The Impact of Global Warming on the Pacific Decadal Oscillation and the Possible Mechanism, ADVANCES IN ATMOSPHERIC SCIENCES, 31, 118-130.  doi: 10.1007/s00376-013-2260-7
    [2] Yueyue LI, Li DAN, Jing PENG, Junbang WANG, Fuqiang YANG, Dongdong GAO, Xiujing YANG, Qiang YU, 2021: Response of Growing Season Gross Primary Production to El Niño in Different Phases of the Pacific Decadal Oscillation over Eastern China Based on Bayesian Model Averaging, ADVANCES IN ATMOSPHERIC SCIENCES, 38, 1580-1595.  doi: 10.1007/s00376-021-0265-1
    [3] Xiaofei WU, Jiangyu MAO, 2019: Decadal Changes in Interannual Dependence of the Bay of Bengal Summer Monsoon Onset on ENSO Modulated by the Pacific Decadal Oscillation, ADVANCES IN ATMOSPHERIC SCIENCES, 36, 1404-1416.  doi: 10.1007/s00376-019-9043-8
    [4] Xiao DONG, Feng XUE, 2016: Phase Transition of the Pacific Decadal Oscillation and Decadal Variation of the East Asian Summer Monsoon in the 20th Century, ADVANCES IN ATMOSPHERIC SCIENCES, 33, 330-338.  doi: 10.1007/s00376-015-5130-7
    [5] Renping LIN, Fei ZHENG, Xiao DONG, 2018: ENSO Frequency Asymmetry and the Pacific Decadal Oscillation in Observations and 19 CMIP5 Models, ADVANCES IN ATMOSPHERIC SCIENCES, 35, 495-506.  doi: 10.1007/s00376-017-7133-z
    [6] YANG Haijun, ZHANG Qiong, 2003: On the Decadal and Interdecadal Variability in the Pacific Ocean, ADVANCES IN ATMOSPHERIC SCIENCES, 20, 173-184.  doi: 10.1007/s00376-003-0002-y
    [7] GAN Bolan, WU Lixin, 2012: Possible Origins of the Western Pacific Warm Pool Decadal Variability, ADVANCES IN ATMOSPHERIC SCIENCES, 29, 169-176.  doi: 10.1007/s00376-011-0193-6
    [8] ZHU Yimin, YANG Xiuqun, 2003: Joint Propagating Patterns of SST and SLP Anomalies in the North Pacific on Bidecadal and Pentadecadal Timescales, ADVANCES IN ATMOSPHERIC SCIENCES, 20, 694-710.  doi: 10.1007/BF02915396
    [9] Yali ZHU, Tao WANG, Jiehua MA, 2016: Influence of Internal Decadal Variability on the Summer Rainfall in Eastern China as Simulated by CCSM4, ADVANCES IN ATMOSPHERIC SCIENCES, 33, 706-714.  doi: 10.1007/s00376-016-5269-x
    [10] Ting LEI, Shuanglin LI, 2023: The Role of Underlying Boundary Forcing in Shaping the Recent Decadal Change of Persistent Anomalous Activity over the Ural Mountains, ADVANCES IN ATMOSPHERIC SCIENCES.  doi: 10.1007/s00376-023-2365-6
    [11] ZHOU Yang, JIANG Jing, Youyu LU, and HUANG Anning, 2013: Revealing the effects of the El Nio-Southern oscillation on tropical cyclone intensity over the western North Pacific from a model sensitivity study, ADVANCES IN ATMOSPHERIC SCIENCES, 30, 1117-1128.  doi: 10.1007/s00376-012-2109-5
    [12] Minmin WU, Rong-Hua ZHANG, Junya HU, Hai ZHI, 2024: Synergistic Interdecadal Evolution of Precipitation over Eastern China and the Pacific Decadal Oscillation during 1951–2015, ADVANCES IN ATMOSPHERIC SCIENCES, 41, 53-72.  doi: 10.1007/s00376-023-3011-z
    [13] Li Chongyin, 1998: The Quasi-Decadal Oscillation of Air-Sea System in the Northwestern Pacific Region, ADVANCES IN ATMOSPHERIC SCIENCES, 15, 31-40.  doi: 10.1007/s00376-998-0015-7
    [14] Liao Qinghai, Li Chongyin, 1995: CISK-rossby wave and the 30-60 Day Oscillation in the Tropics, ADVANCES IN ATMOSPHERIC SCIENCES, 12, 1-12.  doi: 10.1007/BF02661282
    [15] Haikun ZHAO, Chunzai WANG, Ryuji YOSHIDA, 2016: Modulation of Tropical Cyclogenesis in the Western North Pacific by the Quasi-Biweekly Oscillation, ADVANCES IN ATMOSPHERIC SCIENCES, 33, 1361-1375.  doi: 10.1007/s00376-016-5267-z
    [16] Soon-Il AN, 2018: Impact of Pacific Decadal Oscillation on Frequency Asymmetry of El Niño and La Niña Events, ADVANCES IN ATMOSPHERIC SCIENCES, 35, 493-494.  doi: 10.1007/s00376-018-8024-7
    [17] Shangfeng CHEN, Linye SONG, 2018: Impact of the Winter North Pacific Oscillation on the Surface Air Temperature over Eurasia and North America: Sensitivity to the Index Definition, ADVANCES IN ATMOSPHERIC SCIENCES, 35, 702-712.  doi: 10.1007/s00376-017-7111-5
    [18] SONG Jie, LI Chongyin, ZHOU Wen, PAN Jing, 2009: The Linkage between the Pacific-North American Teleconnection Pattern and the North Atlantic Oscillation, ADVANCES IN ATMOSPHERIC SCIENCES, 26, 229-239.  doi: 10.1007/s00376-009-0229-3
    [19] CAO Xi, HUANG Ping, CHEN Guanghua, CHEN Wen, 2012: Modulation of Western North Pacific Tropical Cyclone Genesis by Intraseasonal Oscillation of the ITCZ: A Statistical Analysis, ADVANCES IN ATMOSPHERIC SCIENCES, 29, 744-754.  doi: 10.1007/s00376-012-1121-0
    [20] Shangfeng CHEN, Linye SONG, Wen CHEN, 2019: Interdecadal Modulation of AMO on the Winter North Pacific Oscillation−Following Winter ENSO Relationship, ADVANCES IN ATMOSPHERIC SCIENCES, 36, 1393-1403.  doi: 10.1007/s00376-019-9090-1

Get Citation+

Export:  

Share Article

Manuscript History

Manuscript received: 10 January 2011
Manuscript revised: 10 January 2011
通讯作者: 陈斌, bchen63@163.com
  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

  1. 本站搜索
  2. 百度学术搜索
  3. 万方数据库搜索
  4. CNKI搜索

Dynamic Mechanism of Interannual Sea Surface Height Variability in the North Pacific Subtropical Gyre

  • 1. Institute of Meteorology, PLA University of Science and Technology, Nanjing 211101, Physical Oceanography Laboratory, Ocean University of China, Qingdao 266003,Institute of Meteorology, PLA University of Science and Technology, Nanjing 211101,Institute of Meteorology, PLA University of Science and Technology, Nanjing 211101

Abstract: In this study, the dynamic mechanisms of interannual sea surface height (SSH) variability are investigated based on the first-mode baroclinic Rossby wave model, with a focus on the effects of different levels of wind stress curl (WSC). Maximum covariance analysis (MCA) of WSC and SSH anomalies displays a mode with significant WSC anomalies located primarily in the mid-latitude eastern North Pacific and central tropical Pacific with corresponding SSH anomalies located to the west. This leading mode can be attributed to Ekman pumping induced by local wind stress and the westward-propagating Rossby wave driven by large-scale wind stress. It is further found that in the middle latitudes, the SSH anomalies are largely determined by WSC variations associated with the North Pacific Gyre Oscillation (NPGO), rather than the Pacific Decadal Oscillation (PDO). The sensitivity of the predictive skill of the linear first-mode baroclinic model to different wind products is also examined.

Catalog

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return