| 两种热通量边界条件对热带太平洋海温模拟的影响 |
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| 引用本文： | 王璐,周天军,刘海龙,邹立维.两种热通量边界条件对热带太平洋海温模拟的影响[J].海洋学报,2011,33(4):9-18. |
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| 作者姓名： | 王璐 周天军 刘海龙 邹立维 |
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| 作者单位： | 1.中国科学院 大气物理研究所 大气科学和地球流体力学数值模拟国家重点实验验室,北京 100029;中国科学院研究生院,北京 100049 |
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| 基金项目： | 国家自然科学基金(40890054);国家重点基础研究专项经费(2010CB951904)。 |
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| 摘 要： | 利用中国科学院大气物理研究所大气科学和地球流体力学数值模拟国家重点实验室发展的气候海洋模式(LICOM),考察了两种热通量边界条件(牛顿冷却型边界条件和总体公式型边界条件)对热带太平洋海温平均态和年际变率模拟效果的影响.结果显示,在两种边界条件下,模式均能较好的再现海温的年平均空间分布特征和季节循环特征.对比分析发现,...
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| 关 键 词： | 海洋模式 边界条件 热带太平洋 总体公式 |
| 收稿时间： | 2010/10/18 0:00:00 |
Comparison of two thermal forcing schemes in a global ocean model over tropical Pacific Ocean |
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| WANG Lu,ZHOU Tian-jun,LIU Hai-long and ZOU Li-wei.Comparison of two thermal forcing schemes in a global ocean model over tropical Pacific Ocean[J].Acta Oceanologica Sinica (in Chinese),2011,33(4):9-18. |
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| Authors: | WANG Lu ZHOU Tian-jun LIU Hai-long and ZOU Li-wei |
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| Institution: | 1.State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China;Graduate University of Chinese Academy of Sciences, Beijing 100049, China2.State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China |
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| Abstract: | Both Newton cooling scheme (i.e. prescribed total heat fluxes added with a relaxation term) and bulk formula parameterization scheme are widely used in offline Ocean General Circulation model simulations. These two thermal forcing schemes are compared here in two simulations using LASG/IAP climate ocean model (named LICOM) in terms of the performance over tropical Pacific Ocean. The results indicate that for both the annual mean SST distribution and the annual cycle of SST over tropical pacific, the two schemes show reasonable performance, although the Newton cooling scheme shows even less bias due to its relaxation to observed climatological SST. The El Nio amplitude in the Newton cooling scheme simulation is weaker than that in observation, due to the overestimated negative heat flux feedback which is related with the thermal coupling coefficient. And the suppressed El Nio could further lead to a narrower meridional scale of the SST anomalies in the eastern Pacific. With a reasonable negative heat flux feedback in bulk formula simulation, the model exhibits a more reliable El Nio amplitude and spatial distribution. The study demonstrates that if the simulation aims to get a realistic mean state, the Newton cooling is recommended, but if the simulation focuses on interannual variability of the tropical ocean, the bulk parameterization scheme should be used. |
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| Keywords: | OGCM thermal forcing tropical pacific bulk formula |
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