| 大气对外强迫低频遥响应的数值模拟 Ⅰ:对赤道东太平洋SSTA的响应 |
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| 引用本文： | 肖子牛,李崇银.大气对外强迫低频遥响应的数值模拟 Ⅰ:对赤道东太平洋SSTA的响应[J].大气科学,1992(6). |
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| 作者姓名： | 肖子牛 李崇银 |
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| 作者单位： | LASG中国科学院大气物理研究所,LASG中国科学院大气物理研究所 北京 100080,北京 100080 |
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| 摘 要： | 本文通过在IAP-GCM上实现的数值模拟,研究了大气对赤道东太平洋地区暖SSTA的响应,着重讨论了大气遥响应的性质和演变过程. 数值模拟清楚地表明,大气对异常外源的响应主要是一种具有30—60天周期的低频遥响应.分析不同地区和不同季节这种强迫响应的30—60天低频振荡的结构及活动,可以清楚看到它与大气中实际存在着的30—60天振荡极为相似.因此也可以认为,大气对海温异常的强迫遥响应是激发产生全球大气30—60天振荡的重要机制.
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| 关 键 词： | 30—60天大气振荡 低频遥响应 波列 带通滤波 |
Numerical Simulation of the Atmospheric Low-FrequencyTeleresponse to External Forcing Part I:Anomalous SSTA in the Equatorial Eastern Pacific Ocean |
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| Xiao Ziniu Li Chongyin.Numerical Simulation of the Atmospheric Low-FrequencyTeleresponse to External Forcing Part I:Anomalous SSTA in the Equatorial Eastern Pacific Ocean[J].Chinese Journal of Atmospheric Sciences,1992(6). |
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| Authors: | Xiao Ziniu Li Chongyin |
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| Abstract: | Based on the numerical simulation experiment completed in IAP-GCM , the atmospheric response to the warm SSTA in the equatorial eastern pacific has been studied . Furthermore , the evolution" of the atmospheric teleresponse are discussed .The results indicated that the atmospheric response to this anomalous heating source is mostly dominated by the low- frequency teleresponse with a period of 30 - 60 day . For different regions and seasons, the structure and activity of this 30 - 60 day oscillation caused by the external forcing are very similar to that of the real atmospheric 30 - 60 day oscillation. Therefore , we can suggest that the anomalous SST in the tropical ocean is one of the important mechanisms to cause 30 - 60 day oscillation in the global atmosphere . |
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| Keywords: | 30-60 day oscillation Low-frequency teleresponse Wave- train Band pass- filter |
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