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Volume 27 Issue 3

May  2010

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Article >  ADVANCES IN ATMOSPHERIC SCIENCES  > 2010 >  27(3): 583-593

A Regional Air--Sea Coupled Model and Its Application over East Asia in the Summer of 2000

  • 1.

    School of Atmospheric Sciences, Nanjing University, Nanjing 210093,School of Atmospheric Sciences, Nanjing University, Nanjing 210093,School of Atmospheric Sciences, Nanjing University, Nanjing 210093,School of Atmospheric Sciences, Nanjing University, Nanjing 210093


doi: 10.1007/s00376-009-8203-7

  • A regional air--sea coupled model, comprising the Regional Integrated Environment Model System (RIEMS) and the Princeton Ocean Model (POM) was developed to simulate summer climate features over East Asia in 2000. The sensitivity of the models behavior to the coupling time interval (CTI), the causes of the sea surface temperature (SST) biases, and the role of air--sea interaction in the simulation of precipitation over China are investigated. Results show that the coupled model can basically produce the spatial pattern of SST, precipitation, and surface air temperature (SAT) with five different CTIs respectively. Also, using a CTI of 3, 6 or 12 hours tended to produce more successful simulations than if using 1 and 24 hours. Further analysis indicates that both a higher and lower coupling frequency result in larger model biases in air--sea heat flux exchanges, which might be responsible for the sensitivity of the coupled models behavior to the CTI. Sensitivity experiments indicate that SST biases between the coupled and uncoupled POM occurring over the China coastal waters were due to the mismatch of the surface heat fluxes produced by the RIEMS with those required by the POM. In the coupled run, the air--sea feedbacks reduced the biases in surface heat fluxes, compared with the uncoupled RIEMS, consequently resulted in changes in thermal contrast over land and sea and led to a precipitation increase over South China and a decrease over North China. These results agree well observations in the summer of 2000.
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    [2] Jianping LI, Fei ZHENG, Cheng SUN, Juan FENG, Jing WANG, 2019: Pathways of Influence of the Northern Hemisphere Mid-high Latitudes on East Asian Climate: A Review, ADVANCES IN ATMOSPHERIC SCIENCES, 36, 902-921.  doi: 10.1007/s00376-019-8236-5
    [3] JIANG Dabang, DING Zhongli, Helge DRANGE, GAO Yongqi, 2008: Sensitivity of East Asian Climate to the Progressive Uplift and Expansion of the Tibetan Plateau Under the Mid-Pliocene Boundary Conditions, ADVANCES IN ATMOSPHERIC SCIENCES, 25, 709-722.  doi: 10.1007/s00376-008-0709-x
    [4] FANG Yongjie, ZHANG Yaocun, HUANG Anning, LI Bo, 2013: Seasonal and Intraseasonal Variations of East Asian Summer Monsoon Precipitation Simulated by a Regional Air-Sea Coupled Model, ADVANCES IN ATMOSPHERIC SCIENCES, 30, 315-329.  doi: 10.1007/s00376-012-1241-6
    [5] LIU Bin, GUAN Changlong, Li'an XIE, ZHAO Dongliang, 2012: An Investigation of the Effects of Wave State and Sea Spray on an Idealized Typhoon Using an Air--Sea Coupled Modeling System, ADVANCES IN ATMOSPHERIC SCIENCES, 29, 391-406.  doi: 10.1007/s00376-011-1059-7
    [6] ZHOU Xiaomin, LI Shuanglin, LUO Feifei, GAO Yongqi, Tore FUREVIK, 2015: Air-Sea Coupling Enhances the East Asian Winter Climate Response to the Atlantic Multidecadal Oscillation, ADVANCES IN ATMOSPHERIC SCIENCES, 32, 1647-1659.  doi: 10.1007/s00376-015-5030-x
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    [8] Jing ZOU, Zhenghui XIE, Chesheng ZHAN, Feng CHEN, Peihua QIN, Tong HU, Jinbo XIE, 2019: Coupling of a Regional Climate Model with a Crop Development Model and Evaluation of the Coupled Model across China, ADVANCES IN ATMOSPHERIC SCIENCES, 36, 527-540.  doi: 10.1007/s00376-018-8160-0
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    • Manuscript History

    Manuscript received: 10 May 2010
    Manuscript revised: 10 May 2010
    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 Regional Air--Sea Coupled Model and Its Application over East Asia in the Summer of 2000

    • 1. School of Atmospheric Sciences, Nanjing University, Nanjing 210093,School of Atmospheric Sciences, Nanjing University, Nanjing 210093,School of Atmospheric Sciences, Nanjing University, Nanjing 210093,School of Atmospheric Sciences, Nanjing University, Nanjing 210093
    • Manuscript received: 2010-05-10
    • Manuscript revised: 2010-05-10

    Abstract: A regional air--sea coupled model, comprising the Regional Integrated Environment Model System (RIEMS) and the Princeton Ocean Model (POM) was developed to simulate summer climate features over East Asia in 2000. The sensitivity of the models behavior to the coupling time interval (CTI), the causes of the sea surface temperature (SST) biases, and the role of air--sea interaction in the simulation of precipitation over China are investigated. Results show that the coupled model can basically produce the spatial pattern of SST, precipitation, and surface air temperature (SAT) with five different CTIs respectively. Also, using a CTI of 3, 6 or 12 hours tended to produce more successful simulations than if using 1 and 24 hours. Further analysis indicates that both a higher and lower coupling frequency result in larger model biases in air--sea heat flux exchanges, which might be responsible for the sensitivity of the coupled models behavior to the CTI. Sensitivity experiments indicate that SST biases between the coupled and uncoupled POM occurring over the China coastal waters were due to the mismatch of the surface heat fluxes produced by the RIEMS with those required by the POM. In the coupled run, the air--sea feedbacks reduced the biases in surface heat fluxes, compared with the uncoupled RIEMS, consequently resulted in changes in thermal contrast over land and sea and led to a precipitation increase over South China and a decrease over North China. These results agree well observations in the summer of 2000.

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