| 东亚地区夏季7～8月大气环流季节演变异常的内部动力学过程 |
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| 引用本文： | 廖清海,陶诗言,王会军.东亚地区夏季7～8月大气环流季节演变异常的内部动力学过程[J].地球物理学报,2006,49(1):28-36. |
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| 作者姓名： | 廖清海 陶诗言 王会军 |
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| 作者单位： | 中国科学院大气物理研究所，北京 100029 |
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| 基金项目： | 国家自然科学基金项目（40105010）和国家杰出青年科学基金项目（40125014）资助. |
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| 摘 要： | 利用NCEP/NCAR 1958～1999年月平均再分析数据集，本文分析了7～8月东亚大气环流季节演变异常，包括提前和延迟这两种情形，及其与沿副热带西风急流的内部动力学过程的联系，比较了与气候季节演变进程的差异.结果表明，存在着两个地理位置固定的遥相关型，探讨了二者位相与副热带西风急流的关系，讨论了此类波列的出现与内部动力学过程的可能联系.
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| 关 键 词： | 季节演变 遥相关 副热带西风急流 低频变率 东亚夏季环流 内部动力学 |
| 文章编号： | 0001-5733（2006）01-0028-09 |
| 收稿时间： | 2004-04-29 |
| 修稿时间： | 2004-04-292005-09-07 |
Internal dynamics related to anomalies of seasonal evolution of summer circulations in East Asia during July-August |
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| LIAO Qing-Hai,TAO Shi-Yan,WANG Hui-Jun.Internal dynamics related to anomalies of seasonal evolution of summer circulations in East Asia during July-August[J].Chinese Journal of Geophysics,2006,49(1):28-36. |
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| Authors: | LIAO Qing-Hai TAO Shi-Yan WANG Hui-Jun |
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| Institution: | Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China |
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| Abstract: | Based on the NCEP/NCAR monthly reanalysis dataset of 1958 - 1999, anomalies of seasonal evolution of summer atmospheric circulation in East Asia in July and August, including advanced and delayed cases, and their relationships with the internal dynamical processes along the midsummer subtropical jet stream are analyzed and compared with those of the climatology. The results show that two geographically fixed teleconnection patterns exist and their phase related to the subtropical jet stream is confirmed. A possible linkage between the internal dynamics and the appearance of these wave trains is discussed. |
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| Keywords: | Seasonal evolution Teleconnection Summertime atmospheric circulation in Subtropical westerly jet Low-frequency variability East Asia Internal dynamics |
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