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A Study of SST Warming Trend in the Western Equatorial Pacific in a Coupled Ocean-Atmosphere-Land GCM


doi: 10.1007/s00376-999-0002-7

  • In a version of LASG coupled ocean-atmosphere-land system model, where a diurnal cycle of solar radiation is included, a rapid SST warming trend of about 2.0oC appears in the western equatorial Pacific within the first two years of an integration. An analysis reveals that the appearance of the surface westerly wind anomaly since the fifth month of the integration is responsible for the SST warming. To reduce the SST warming, the reference heat flux used in the model is then redefined according to the first 4 months, instead of the first 3 years, of a trial run. It is found that the refining of the reference heat flux is successful in avoiding the unrealistic persistent westerly wind anomaly. Consequently, the SST warming is almost com-pletely removed. It is explored that the persistent westerly wind anomaly is induced by the anomalous sur-face pressure patterns in the northern tropical and subtropical regions, which is related to the errors in the surface heat flux in the off-equatorial regions.
  • [1] Liu Hui, Jin Xiangze, Zhang Xuehong, Wu Guoxiong, 1996: A Coupling Experiment of an Atmosphere and an Ocean Model with a Monthly Anomaly Exchange Schem, ADVANCES IN ATMOSPHERIC SCIENCES, 13, 133-146.  doi: 10.1007/BF02656857
    [2] ZHANG Rong-Hua, 2015: A Hybrid Coupled Model for the Pacific Ocean-Atmosphere System. Part I: Description and Basic Performance, ADVANCES IN ATMOSPHERIC SCIENCES, 32, 301-318.  doi: 10.1007/s00376-014-3266-5
    [3] Yaqi WANG, Zipeng YU, Pengfei LIN, Hailong LIU, Jiangbo JIN, Lijuan LI, Yanli TANG, Li DONG, Kangjun CHEN, Yiwen LI, Qian YANG, Mengrong DING, Yao MENG, Bowen ZHAO, Jilin WEI, Jinfeng MA, Zhikuo SUN, 2020: FGOALS-g3 Model Datasets for CMIP6 Flux-Anomaly-Forced Model Intercomparison Project, ADVANCES IN ATMOSPHERIC SCIENCES, 37, 1093-1101.  doi: 10.1007/s00376-020-2045-8
    [4] KANG Xianbiao, HUANG Ronghui, WANG Zhanggui, ZHANG Rong-Hua, 2014: Sensitivity of ENSO Variability to Pacific Freshwater Flux Adjustment in the Community Earth System Model, ADVANCES IN ATMOSPHERIC SCIENCES, 31, 1009-1021.  doi: 10.1007/s00376-014-3232-2
    [5] CAO Jie, LU Riyu, HU Jinming, WANG Hai, 2013: Spring Indian Ocean-Western Pacific SST Contrast and the East Asian Summer Rainfall Anomaly, ADVANCES IN ATMOSPHERIC SCIENCES, 30, 1560-1568.  doi: 10.1007/s00376-013-2298-6
    [6] Jiangbo JIN, He ZHANG, Xiao DONG, Hailong LIU, Minghua ZHANG, Xin GAO, Juanxiong HE, Zhaoyang CHAI, Qingcun ZENG, Guangqing ZHOU, Zhaohui LIN, Yi YU, Pengfei LIN, Ruxu LIAN, Yongqiang YU, Mirong SONG, Dongling ZHANG, 2021: CAS-ESM2.0 Model Datasets for the CMIP6 Flux-Anomaly-Forced Model Intercomparison Project (FAFMIP), ADVANCES IN ATMOSPHERIC SCIENCES, 38, 296-306.  doi: 10.1007/s00376-020-0188-2
    [7] ZHI Hai, ZHANG Rong-Hua, LIN Pengfei, WANG Lanning, 2015: Simulation of Salinity Variability and the Related Freshwater Flux Forcing in the Tropical Pacific: An Evaluation Using the Beijing Normal University Earth System Model (BNU-ESM), ADVANCES IN ATMOSPHERIC SCIENCES, 32, 1551-1564.  doi: 10.1007/s00376-015-4240-6
    [8] 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
    [9] Chengyan LIU, Zhaomin WANG, Bingrui LI, Chen CHENG, Ruibin XIA, 2017: On the Response of Subduction in the South Pacific to an Intensification of Westerlies and Heat Flux in an Eddy Permitting Ocean Model, ADVANCES IN ATMOSPHERIC SCIENCES, 34, 521-531.  doi: 10.1007/s00376-016-6021-2
    [10] Zhang Ronghua, Zeng Qingcun, Zhou Guangqing, Liang Xinzhong, 1995: A Coupled General Circulation Model for the Tropical Pacific Ocean and Global Atmosphere, ADVANCES IN ATMOSPHERIC SCIENCES, 12, 127-142.  doi: 10.1007/BF02656827
    [11] Li Yinpeng, Ji Jinjun, 2001: Model Estimates of Global Carbon Flux between Vegetation and the Atmosphere, ADVANCES IN ATMOSPHERIC SCIENCES, 18, 807-818.
    [12] BAO Qing, LIN Pengfei, ZHOU Tianjun, LIU Yimin, YU Yongqiang, WU Guoxiong, HE Bian, HE Jie, LI Lijuan, LI Jiandong, LI Yangchun, LIU Hailong, QIAO Fangli, SONG Zhenya, WANG Bin, WANG Jun, WANG Pengfei, WANG Xiaocong, WANG Zaizhi, WU Bo, WU Tongwen, XU Yongfu, YU Haiyang, ZHAO Wei, ZHENG Weipeng, and ZHOU Linjiong, , 2013: The Flexible Global Ocean-Atmosphere-Land System Model, Spectral Version 2: FGOALS-s2, ADVANCES IN ATMOSPHERIC SCIENCES, 30, 561-576.  doi: 10.1007/s00376-012-2113-9
    [13] HUANG Ping, WANG Pengfei, HU Kaiming, HUANG Gang, ZHANG Zhihua, LIU Yong, YAN Bangliang, 2014: An Introduction to the Integrated Climate Model of the Center for Monsoon System Research and Its Simulated Influence of El Nio on East Asian-Western North Pacific Climate, ADVANCES IN ATMOSPHERIC SCIENCES, 31, 1136-1146.  doi: 10.1007/s00376-014-3233-1
    [14] Jiangbo JIN, Xiao DONG, Juanxiong HE, Yi YU, Hailong LIU, Minghua ZHANG, Qingcun ZENG, He ZHANG, Xin GAO, Guangqing ZHOU, Yaqi WANG, 2022: Ocean Response to a Climate Change Heat-Flux Perturbation in an Ocean Model and Its Corresponding Coupled Model, ADVANCES IN ATMOSPHERIC SCIENCES, 39, 55-66.  doi: 10.1007/s00376-021-1167-y
    [15] Huang Ronghui, Lu Li, 1989: Numerical Simulation of the Relationship between the Anomaly of Subtropical High over East Asia and the Convective Activities in the Western Tropical Pacific, ADVANCES IN ATMOSPHERIC SCIENCES, 6, 202-214.  doi: 10.1007/BF02658016
    [16] Sun Shuqing, Ying Ming, 1999: Subtropical High Anomalies over the Western Pacific and Its Relations to the Asian Monsoon and SST Anomaly, ADVANCES IN ATMOSPHERIC SCIENCES, 16, 559-568.  doi: 10.1007/s00376-999-0031-2
    [17] LIU Qinyu, WEN Na, YU Yongqiang, 2006: The Role of the Kuroshio in the Winter North Pacific Ocean-Atmosphere Interaction: Comparison of a Coupled Model and Observations, ADVANCES IN ATMOSPHERIC SCIENCES, 23, 181-189.  doi: 10.1007/s00376-006-0181-4
    [18] LI Lijuan, LIN Pengfei, YU Yongqiang, WANG Bin, ZHOU Tianjun, LIU Li, LIU Jiping, BAO Qing, XU Shiming, HUANG Wenyu, XIA Kun, PU Ye, DONG Li, SHEN Si, LIU Yimin, HU Ning, LIU Mimi, SUN Wenqi, SHI Xiangjun, ZHENG Weipeng, WU Bo, SONG Mirong, LIU Hailong, ZHANG Xuehong, WU Guoxiong, XUE Wei, HUANG Xiaomeng, YANG Guangwen, SONG Zhenya, and QIAO Fangli, 2013: The Flexible Global Ocean-Atmosphere-Land System Model, Grid-point Version 2: FGOALS-g2, ADVANCES IN ATMOSPHERIC SCIENCES, 30, 543-560.  doi: 10.1007/s00376-012-2140-6
    [19] XIA Kun, WANG Bin, LI Lijuan, SHEN Si, HUANG Wenyu, XU Shiming, DONG Li, LIU Li, 2014: Evaluation of Snow Depth and Snow Cover Fraction Simulated by Two Versions of the Flexible Global Ocean-Atmosphere-Land System Model, ADVANCES IN ATMOSPHERIC SCIENCES, 31, 407-420.  doi: 10.1007/s00376-013-3026-y
    [20] YU Yongqiang, ZHENG Weipeng, WANG Bin, LIU Hailong, LIU Jiping, 2011: Versions g1.0 and g1.1 of the LASG/IAP Flexible Global Ocean--Atmosphere--Land System Model, ADVANCES IN ATMOSPHERIC SCIENCES, 28, 99-117.  doi: 10.1007/s00376-010-9112-5

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Manuscript History

Manuscript received: 10 January 1999
Manuscript revised: 10 January 1999
通讯作者: 陈斌, bchen63@163.com
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A Study of SST Warming Trend in the Western Equatorial Pacific in a Coupled Ocean-Atmosphere-Land GCM

  • 1. State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics (LASG) Institute of Atmospheric Physics, Chinese Academy of Sciences P. O. Box 2718, Beijing 100080,State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics (LASG) Institute of Atmospheric Physics, Chinese Academy of Sciences P. O. Box 2718, Beijing 100080

Abstract: In a version of LASG coupled ocean-atmosphere-land system model, where a diurnal cycle of solar radiation is included, a rapid SST warming trend of about 2.0oC appears in the western equatorial Pacific within the first two years of an integration. An analysis reveals that the appearance of the surface westerly wind anomaly since the fifth month of the integration is responsible for the SST warming. To reduce the SST warming, the reference heat flux used in the model is then redefined according to the first 4 months, instead of the first 3 years, of a trial run. It is found that the refining of the reference heat flux is successful in avoiding the unrealistic persistent westerly wind anomaly. Consequently, the SST warming is almost com-pletely removed. It is explored that the persistent westerly wind anomaly is induced by the anomalous sur-face pressure patterns in the northern tropical and subtropical regions, which is related to the errors in the surface heat flux in the off-equatorial regions.

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