| 系统辨识(6):多新息辨识理论与方法 |
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| 引用本文： | 丁锋. 系统辨识(6):多新息辨识理论与方法[J]. 南京气象学院学报, 2012, 4(1): 1-28 |
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| 作者姓名： | 丁锋 |
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| 作者单位： | 解放军理工大学气象学院军事海洋环境全军重点实验室,江苏南京,211101 |
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| 基金项目： | 国家自然科学基金资助项目（41075045;41005025） |
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| 摘 要： | 基于NCEP／NCAR提供的1958-2008年逐日再分析资料，对2007／2008年冬季我国雨雪冰冻灾害期间副高指数特征与E1Nino／LaNina年平均冬半年副高指数特征以及50a平均冬半年副高指数特征进行对比分析。采用交叉小波和小波相干分析方法，进一步分析了它们之间的相关性和异同性以及对大气环流的影响，揭示了2007／2008年我国南方雨雪冰冻灾害期间副热带高压活动与环流变异特性的一些基本特征，如LaNina事件冬季（尤其是中等强度LaNina事件年份的冬季），副高通常比一般年份副高的平均位置偏北。
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| 关 键 词： | 雨雪冰冻 副热带高压 交叉小波 小波相干 |
| 收稿时间： | 2011-12-14 |
System identification.Part F:Multi-innovation identification theory and methods |
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| DING Feng. System identification.Part F:Multi-innovation identification theory and methods[J]. Journal of Nanjing Institute of Meteorology, 2012, 4(1): 1-28 |
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| Authors: | DING Feng |
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| Affiliation: | ( PLA Key Laboratory of Military Marine Environment, Institute of Meteorology PLA University of Science and Technological ,Nanjing 211101 ,China) |
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| Abstract: | Based on the NCEP/NCAR daily reanalysis data from 1958 to 2008, this paper studies the subtropical high indexes in the winter of 2007/2008 （ a serious cold rain-snow frost disaster occurred in southern China） ,El Nino/La Nina events average, and 50-yr average（from 1958 to 2007）. Then, the cross wavelet and wavelet coherence techniques are introduced to analyse the relativity and the difference of subtropical high indexes, and the influence of subtropical high on atmospheric circulation in different periods including the E1 Nino/La Nina periods and the usual years. Some meaning characters of subtropical high activity and corresponding subtropical circulation are revealed in the winter of 2007/2008, such as the position of subtropical high moves northward in the winter of La Nina event average, especially in the winter of mean-strong La Nina event. |
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| Keywords: | rain-snow and frost subtropical high cross wavelet wavelet coherence |
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