| 东亚冬季风异常与ENSO循环关系的进一步研究 |
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| 引用本文： | 穆明权.东亚冬季风异常与ENSO循环关系的进一步研究[J].气候与环境研究,2001,6(3):273-285. |
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| 作者姓名： | 穆明权 |
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| 作者单位： | 中国科学院大气物理研究所 |
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| 基金项目： | 国家重点基础研究发展规划项目G1998040900第一部分和中国科学院KZCX2-203 |
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| 摘 要： | 通过对1955～1989年35年的观测资料的合成分析,进一步指出东亚冬季风与ElNino、LaNina事件存在着明显的相互作用、相互影响的循环关系.这种循环关系一方面表现在异常强(弱)东亚冬季风通过激发赤道中西太平洋地区的异常西(东)风以及强(弱)对流活动,而最终使得ElNino(LaNina)事件爆发;另一方面,ElNino(LaNina)的爆发将通过大气遥响应,使得东亚冬季风偏弱(强).功率谱分析也表明,东亚冬季风与ENSO循环相互作用主要表现在3～5年的周期上,同时准2年周期也很明显.
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| 关 键 词： | 东亚冬季风 ENSO 遥响应 Kelvin波 振荡 |
| 修稿时间： | 1999年5月24日 |
A Further Research on the Cyclic Relationship between Anomalous East-Asian Winter Monsoon and ENSO |
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| Mu Mingquan.A Further Research on the Cyclic Relationship between Anomalous East-Asian Winter Monsoon and ENSO[J].Climatic and Environmental Research,2001,6(3):273-285. |
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| Authors: | Mu Mingquan |
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| Abstract: | Through composite analyses about the observed global monthly data from 1955 to 1989, we further point out there is apparent interactive cycle relationship between East Asian winter monsoon and ENSO (E1 Nino and La Nina). On the one hand, stronger (weaker) East Asian winter monsoon ex- cite happening of E1 Nino (La Nina) through forced anomalous westerly (easterly) wind and stronger (weaker) convective activity over the tropical Pacific Ocean, caused by anomalous winter monsoon, on the other hand, the occurrence of E1 Nino (La Nina) weakens (enhances) East Asian winter monsoon through the atmospheric teleconnection in the northern hemisphere. The results of power spectral ana- lyses show that this cycle mainly manifests in the 3- 5 years; in the meantime, quasi-biannual cycle is also clear. |
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| Keywords: | East Asian winter monsoon ENSO teleconnection Kelvin wave oscillation |
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