| 东亚副热带西风急流及其年际变率的海气耦合模式模拟 |
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| 引用本文： | 蔡琼琼,周天军,吴波,李博,张丽霞.东亚副热带西风急流及其年际变率的海气耦合模式模拟[J].海洋学报,2011,33(4):38-48. |
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| 作者姓名： | 蔡琼琼 周天军 吴波 李博 张丽霞 |
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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室,北京 100029;中国科学院研究生院, 北京 100049 |
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| 基金项目： | 全球变化重大科学研究计划(2010CB951904);创新研究群体科学基金(40821092);国家自然科学基金(40890054)。 |
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| 摘 要： | 分析了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(LASG/IAP)快速耦合气候系统模式FGOALS_gl模拟的东亚副热带西风急流,并讨论了ENSO对东亚夏季副热带西风急流位置的影响.FGOALS_gl能较好模拟东亚副热带西风急流的空间分布以及季节演变,但较之再分析资料,模式模拟的急流强度偏弱...
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| 关 键 词： | 气候系统模式 东亚副热带西风急流 模式评估 ENSO |
| 收稿时间： | 2010/10/28 0:00:00 |
The East Asian subtropical westerly jet and its interannual variability simulated by a climate system model FGOALS_gl |
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| CAI Qiong-qiong,ZHOU Tian-jun,WU Bo,LI Bo and ZHANG Li-xia.The East Asian subtropical westerly jet and its interannual variability simulated by a climate system model FGOALS_gl[J].Acta Oceanologica Sinica (in Chinese),2011,33(4):38-48. |
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| Authors: | CAI Qiong-qiong ZHOU Tian-jun WU Bo LI Bo and ZHANG Li-xia |
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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: | The performance of the fast version of IAP/LASG coupled climate system model, named FGOALS_gl, in simulating the East Asian subtropical westerly jet (thereafter EASWJ) is evaluated. The model can reasonably reproduce the climatological characteristics of the EASWJ, including the spatial structure and the seasonal meridional displacement. Compared with the NCEP/NCAR reanalysis data, the major model deficiency is the weaker intensity and the southward shift of the EASWJ. It is found that the deficiency of EASWJ simulation is resulted from the bias in middle-upper troposphere temperature. The cold tropospheric temperature bias south to the EASWJ axis is stronger than that in the north. On the interannual timescale, the meridional displacement of EASWJ is reasonably simulated, although the model overestimates the interannual variability which is partly attributed to the bias in ENSO simulation. The southward displacement of EASWJ is evident in the summer of El Nio decaying year. The NCEP/NCAR reanalysis data and FGAOLS_gl are consistent in this regard. Since the simulated ENSO is stronger and persists into the following autumn, thus has a phase-locking in spring-summer. Correspondingly the ENSO-related tropospheric warming is still significant in El Nio decaying summer, leading to a stronger interannual variability of the EASWJ. |
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| Keywords: | climate system model East Asian subtropical westerly jet model evaluation ENSO |
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