| 大气对南极冰异常的低频遥响应 |
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| 引用本文： | 王成刚,沙文钰.大气对南极冰异常的低频遥响应[J].热带气象学报,1998,14(3):239-250. |
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| 作者姓名： | 王成刚 沙文钰 |
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| 作者单位： | 空军气象研究所(王成刚)，空军气象学院海洋气象系(沙文钰) |
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| 摘 要： | 运用ＬＡＰＧＣＭ模式证实了大气对南极冰异常的强迫遥响应是激发全球大气季节内振荡的重要机制，进而着重考察候平均偏差结果的时间序列，并且通过带通以处理，特别分析了响应场中３０－６０天低频振荡的重要特征，发现：大报对南极冰减退的响应是一种具有３０－６０天周期的低频遥响应。强迫场中的重要成分是３０－６０天季节内振荡，并且具有同实际大气中的低频振荡相类的垂直结构以及传播和分布特征。
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| 关 键 词： | 大气环流 遥相关波列 季节内振荡 南极冰异常 |
| 收稿时间： | 5/4/1997 12:00:00 AM |
| 修稿时间： | 1997/8/20 0:00:00 |
THE ATMOSPHERIC LOW FREQUENCY TELERESPONSE TO ANOMALIES IN THE ANTARCTIC SEA ICE |
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| Wang Chenggang and Sha Wenyu.THE ATMOSPHERIC LOW FREQUENCY TELERESPONSE TO ANOMALIES IN THE ANTARCTIC SEA ICE[J].Journal of Tropical Meteorology,1998,14(3):239-250. |
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| Authors: | Wang Chenggang and Sha Wenyu |
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| Institution: | Air Force Meteorological Institute, Beijing, 100085;The Air Force Institute of Meteorology |
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| Abstract: | By using IAP-GCM,it is proved that the anomaly in the Antarctic ice is one of the important mechanisms to cause intraseasonal oscillation in the global atmosphere.The time sequence of pentadly mean depature field is analized in this paper by using the band pass filtering scheme.With special attention to the characteristics of 30-60 day oscillation in the response field,it was found that the global atmosphere behaves long-time teleresponse to an anomalous external forcing from the Antarctic sea ice,whose period ranges from thirty to sixty days.30-60 day oscillation plays an important role in the forcing field,whose vertical structure,zonal propagation and distribution characteristics in the model atmosphere is similar to that in the real atmosphere. |
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| Keywords: | Atmospheric circulation Teleconection-wavetrain Intraseasonal oscillation |
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