| Numerical Simulation and Comparison Study of the Atmospheric Intraseasonal Oscillation |
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| 作者姓名： | LI Chongyin LING Jian JIA Xiaolong DONG Min |
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| 作者单位： | LASG Institute of Atmospheric Physics Chinese Academy of Sciences，LASG，Institute of Atmospheric Physics Chinese Academy of Sciences，LASG，Institute of Atmospheric Physics Chinese Academy of Sciences，National Climate Center，Beijing 100029 Institute of Meteorology PLA University of Science and Technology Nanjing 211101，Beijing 100029 Graduate University of the Chinese Academy of Sciences Beijing 100049，Beijing 100029 National Climate Center Beijing 100081，Beijing 100081 |
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| 基金项目： | 国家自然科学基金;中国科学院基金 |
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| 摘 要： | Daily mean outputs for 12 yr (1978-1989) from two general circulation models (SAMIL-R42L9 and CAM2.0.2) are analyzed and compared with the corresponding NCEP/NCAR reanalysis dataset, and results in two models show clearly that the root-mean square errors (RMSEs) from the simulation of intraseasonal oscillation can take 30-40 percent of the total RMSE, particularly, the distributions of the RMSE in simulating intraseasonal oscillation are almost identical with that of the total RMSE. The maximum RMSE of intraseasonal oscillation height at 500 hPa is shown in the middle latitude regions, but there are also large RMSEs of intraseasonal oscillation wind over the tropical western Pacific and tropical Indian Oceans. The simulated ISO energy in the tropic has very large difference from the result of the NCEP/NCAR reanalysis dataset which means the simulation of tropical atmospheric ISO still possesses serious insufficiency. Therefore, intraseasonal oscillation in the weather and climate numerical simulation is very important, and thus, how to improve the ability of the GCM to simulate the intraseasonal oscillation becomes very significant.
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| 关 键 词： | 热带大气 季节内大气振荡 数值模拟 比较研究 广义环流模型 |
| 收稿时间： | 1/8/2007 12:00:00 AM |
Numerical Simulation and Comparison Study of the Atmospheric Intraseasonal Oscillation |
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| LI Chongyin,LING Jian,JIA Xiaolong,DONG Min.Numerical Simulation and Comparison Study of the Atmospheric Intraseasonal Oscillation[J].Acta Meteorologica Sinica,2007,21(1):1-8. |
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| Authors: | LI Chongyin LING Jian JIA Xiaolong and DONG Min LASG |
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| Institution: | [1]LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029 [2]Institute of Meteorology, PLA University of Science and Technology, Nanjing 211101 [3]Graduate University of the Chinese Academy of Sciences, Beijing 100049 [4]National Climate Center, Beijing 100081 |
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| Abstract: | Daily mean outputs for 12 yr (1978-1989) from two general circulation models (SAMIL-R42L9 and CAM2.0.2) are analyzed and compared with the corresponding NCEP/NCAR reanalysis dataset, and results in two models show clearly that the root-mean square errors (RMSEs) from the simulation of intraseasonal oscillation can take 30-40 percent of the total RMSE, particularly, the distributions of the RMSE in simulating intraseasonal oscillation are almost identical with that of the total RMSE. The maximum RMSE of intraseasonal oscillation height at 500 hPa is shown in the middle latitude regions, but there are also large RMSEs of intraseasonal oscillation wind over the tropical western Pacific and tropical Indian Oceans. The simulated ISO energy in the tropic has very large difference from the result of the NCEP/NCAR reanalysis dataset which means the simulation of tropical atmospheric ISO still possesses serious insufficiency. Therefore, intraseasonal oscillation in the weather and climate numerical simulation is very important, and thus, how to improve the ability of the GCM to simulate the intraseasonal oscillation becomes very significant. |
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| Keywords: | atmospheric intraseasonal oscillation (ISO) climate simulation general circulation model tropical atmosphere kinetic energy |
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