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Volume 22 Issue 5

Sep.  2005

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Article >  ADVANCES IN ATMOSPHERIC SCIENCES  > 2005 >  22(5): 665-676

South China Sea Summer Monsoon Onset in Relation to the Off-Equatorial ITCZ

  • 1.

    State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics (LASG),Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029;Laboratory for Atmospheric Research, Department of Physics and Materials Science, City University of Hong Kong, Hong Kong,Laboratory for Atmospheric Research, Department of Physics and Materials Science, City University of Hong Kong, Hong Kong,State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics (LASG),Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029;Institute of Meteorology, PLA University of Science and Technology, Nanjing 211101


doi: 10.1007/BF02918710

  • Observations of the South China Sea summer monsoon (SCSSM) demonstrate the different features between the early and late onsets of the monsoon. The determining factor related to the onset and the resultant monsoon rainfall might be the off-equatorial ITCZ besides the land-sea thermal contrast. The northward-propagating cumulus convection over the northern Indian Ocean could enhance the monsoon trough so that the effect of the horizontal advection of moisture and heat is substantially increased, thus westerlies can eventually penetrate and prevail over the South China Sea (SCS) region.
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    [2] WU Bingyi, 2005: Weakening of Indian Summer Monsoon in Recent Decades, ADVANCES IN ATMOSPHERIC SCIENCES, 22, 21-29.  doi: 10.1007/BF02930866
    [3] Yang Yan, Zhu Baozhen, 1995: The Dynamical Influence of Land-Sea Contrast and Sea Surface Temperature on Intraseasonal Oscillation in Tropical Atmosphere, ADVANCES IN ATMOSPHERIC SCIENCES, 12, 405-418.  doi: 10.1007/BF02657002
    [4] ZHENG Fei, FENG Lisha, ZHU Jiang, 2015: An Incursion of Off-Equatorial Subsurface Cold Water and Its Role in Triggering the "Double Dip" La Niña Event of 2011, ADVANCES IN ATMOSPHERIC SCIENCES, 32, 731-742.  doi: 10.1007/s00376-014-4080-9
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    [6] HUANG Ronghui, GU Lei, ZHOU Liantong, WU Shangsen, 2006: Impact of the Thermal State of the Tropical Western Pacific on Onset Date and Process of the South China Sea Summer Monsoon, ADVANCES IN ATMOSPHERIC SCIENCES, 23, 909-924.  doi: 10.1007/s00376-007-0100-3
    [7] ZHANG Zhongshi, WANG Huijun, GUO Zhengtang, JIANG Dabang, 2006: Impact of Topography and Land-Sea Distribution on East Asian Paleoenvironmental Patterns, ADVANCES IN ATMOSPHERIC SCIENCES, 23, 258-266.  doi: 10.1007/s00376-006-0258-0
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    [9] LIU Peng, QIAN Yongfu, HUANG Anning, 2009: Impacts of Land Surface and Sea Surface Temperatures on the Onset Date of the South China Sea Summer Monsoon, ADVANCES IN ATMOSPHERIC SCIENCES, 26, 493-502.  doi: 10.1007/s00376-009-0493-2
    [10] Guo Weidong, Sun Shufen, Qian Yongfu, 2002: Case Analyses and Numerical Simulation of Soil Thermal Impacts on Land Surface Energy Budget Based on an Off-Line Land Surface Model, ADVANCES IN ATMOSPHERIC SCIENCES, 19, 500-512.  doi: 10.1007/s00376-002-0082-0
    [11] Li Chongyin, Wu Jingbo, 2000: On the Onset of the South China Sea Summer Monsoon in 1998, ADVANCES IN ATMOSPHERIC SCIENCES, 17, 193-204.  doi: 10.1007/s00376-000-0003-z
    [12] Gill M. MARTIN, Amulya CHEVUTURI, Ruth E. COMER, Nick J. DUNSTONE, Adam A. SCAIFE, Daquan ZHANG, 2019: Predictability of South China Sea Summer Monsoon Onset, ADVANCES IN ATMOSPHERIC SCIENCES, 36, 253-260.  doi: 10.1007/s00376-018-8100-z
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    [16] HE Jinhai, WEN Min, WANG Lijuan, XU Haiming, 2006: Characteristics of the Onset of the Asian Summer Monsoon and the Importance of Asian-Australian “Land Bridge”, ADVANCES IN ATMOSPHERIC SCIENCES, 23, 951-963.  doi: 10.1007/s00376-006-0951-z
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    [19] WU Fanghua, LIN Pengfei, LIU Hailong, 2012: Influence of a Southern Shift of the ITCZ from Quick Scatterometer Data on the Pacific North Equatorial Countercurrent, ADVANCES IN ATMOSPHERIC SCIENCES, 29, 1292-1304.  doi: 10.1007/s00376-012-1149-1
    [20] Shao Hui, Qian Yongfu, 2000: Main Features of Regional Circulation Variation during Onset of the South China Sea Monsoon in 1998, ADVANCES IN ATMOSPHERIC SCIENCES, 17, 322-338.  doi: 10.1007/s00376-000-0013-x
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    • Manuscript History

    Manuscript received: 10 September 2005
    Manuscript revised: 10 September 2005
    通讯作者: 陈斌, bchen63@163.com
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    South China Sea Summer Monsoon Onset in Relation to the Off-Equatorial ITCZ

    • 1. State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics (LASG),Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029;Laboratory for Atmospheric Research, Department of Physics and Materials Science, City University of Hong Kong, Hong Kong,Laboratory for Atmospheric Research, Department of Physics and Materials Science, City University of Hong Kong, Hong Kong,State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics (LASG),Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029;Institute of Meteorology, PLA University of Science and Technology, Nanjing 211101
    • Manuscript received: 2005-09-10
    • Manuscript revised: 2005-09-10

    Abstract: Observations of the South China Sea summer monsoon (SCSSM) demonstrate the different features between the early and late onsets of the monsoon. The determining factor related to the onset and the resultant monsoon rainfall might be the off-equatorial ITCZ besides the land-sea thermal contrast. The northward-propagating cumulus convection over the northern Indian Ocean could enhance the monsoon trough so that the effect of the horizontal advection of moisture and heat is substantially increased, thus westerlies can eventually penetrate and prevail over the South China Sea (SCS) region.

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