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Volume 12 Issue 2

Apr.  1995

Article Contents
Article >  ADVANCES IN ATMOSPHERIC SCIENCES  > 1995 >  12(2): 127-142

A Coupled General Circulation Model for the Tropical Pacific Ocean and Global Atmosphere

  • 1.

    LASG, Institute of Atmospheric Physic, Chinese Academy of Sciences, Beijing 100080,LASG, Institute of Atmospheric Physic, Chinese Academy of Sciences, Beijing 100080,LASG, Institute of Atmospheric Physic, Chinese Academy of Sciences, Beijing 100080,LASG, Institute of Atmospheric Physic, Chinese Academy of Sciences, Beijing 100080


doi: 10.1007/BF02656827

  • On the basis of Zeng’s theoretical design, a coupled general circulation model (CGCM) is developed with its characteristics different from other CGCMs such as the unified vertical coordinates and subtraction of the standard stratification for both atmosphere and ocean, available energy consideration, and so on. The oceanic component is a free surface tropical Pacific Ocean GCM between 30oN and 30oS with horizontal grid spacing of 1o in latitude and 2o in longitude, and with 14 vertical layers. The atmospheric component it a global GCM with low-resolution of 4o in latitude and 5o in longitude, and two layers or equal man in the vertical between the surface and 200 hPa. The atmospheric GCM includes comprehensive physical processes. The coupled model is subjected to seasonally-varying cycle. Several coupling experiments, ranging from straight forward coupling without flux correction to one with flux correction, and to so-called predictor-corrector monthly coupling (PCMC), are conducted to show the existence and final controlling of the climate drift in the coupled system. After removing the climate drift with the PCMC scheme, the coupled model is integrated for more than twenty years. The results show reasonable simulations of the annual mean and its seasonal cycle of the atmospheric and oceanic circulation. The model also produces the coherent interannual variations of the climate system, manifesting the observed El Ni?o / Southern Oscillation (ENSO).
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    [11] Chao Jiping, WangXiaoxi, Chen Yingyi, Wang Lizhi, 1986: MONTHLY AND SEASONAL NUMERICAL FORECASTS BY USING THE ANOMALY OCEAN-ATMOSPHERE COUPLED FILTERED MODEL, ADVANCES IN ATMOSPHERIC SCIENCES, 3, 139-149.  doi: 10.1007/BF02682548
    [12] CHEN Xianyan, Masahide KIMOTO, 2009: Simulating Tropical Instability Waves in the Equatorial Eastern Pacific with a Coupled General Circulation Model, ADVANCES IN ATMOSPHERIC SCIENCES, 26, 1015-1026.  doi: 10.1007/s00376-009-8078-7
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    • Manuscript History

    Manuscript received: 10 April 1995
    Manuscript revised: 10 April 1995
    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

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    A Coupled General Circulation Model for the Tropical Pacific Ocean and Global Atmosphere

    • 1. LASG, Institute of Atmospheric Physic, Chinese Academy of Sciences, Beijing 100080,LASG, Institute of Atmospheric Physic, Chinese Academy of Sciences, Beijing 100080,LASG, Institute of Atmospheric Physic, Chinese Academy of Sciences, Beijing 100080,LASG, Institute of Atmospheric Physic, Chinese Academy of Sciences, Beijing 100080
    • Manuscript received: 1995-04-10
    • Manuscript revised: 1995-04-10

    Abstract: On the basis of Zeng’s theoretical design, a coupled general circulation model (CGCM) is developed with its characteristics different from other CGCMs such as the unified vertical coordinates and subtraction of the standard stratification for both atmosphere and ocean, available energy consideration, and so on. The oceanic component is a free surface tropical Pacific Ocean GCM between 30oN and 30oS with horizontal grid spacing of 1o in latitude and 2o in longitude, and with 14 vertical layers. The atmospheric component it a global GCM with low-resolution of 4o in latitude and 5o in longitude, and two layers or equal man in the vertical between the surface and 200 hPa. The atmospheric GCM includes comprehensive physical processes. The coupled model is subjected to seasonally-varying cycle. Several coupling experiments, ranging from straight forward coupling without flux correction to one with flux correction, and to so-called predictor-corrector monthly coupling (PCMC), are conducted to show the existence and final controlling of the climate drift in the coupled system. After removing the climate drift with the PCMC scheme, the coupled model is integrated for more than twenty years. The results show reasonable simulations of the annual mean and its seasonal cycle of the atmospheric and oceanic circulation. The model also produces the coherent interannual variations of the climate system, manifesting the observed El Ni?o / Southern Oscillation (ENSO).

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