| 北半球大气遥相关型的统计诊断及数值试验 |
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| 引用本文： | 彭世球,章基嘉.北半球大气遥相关型的统计诊断及数值试验[J].应用气象学报,1998,9(1):65-71. |
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| 作者姓名： | 彭世球 章基嘉 |
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| 作者单位： | 1.中国气象科学研究院(彭世球)，国家气候中心(章基嘉) |
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| 基金项目： | “长期天气预报理论和方法的研究”课题 |
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| 摘 要： | 此项研究旨在通过对北半球大气遥相关型的统计诊断及数值试验，探讨旬平均尺度遥相关型的存在和时空规律及其成因，以及各遥相关型之间的相互关系。结果表明:5种遥相关型在旬时间尺度上表现得十分清楚，且具有冬强夏弱的特点；各种遥相关型特征指数时间序列具有随时间演变的一般规律；某些海区的海温异常能激发出一定的遥相关型，5种遥相关型之间存在非线性相互作用；各种遥相关型特征指数能反映一定的大气环流和天气异常的特征，因而可以作为研究长期天气过程和预报方法的依据。
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| 关 键 词： | 遥相关 旬平均尺度 特征指数 敏感性试验 |
The Statistical Diagnosis and Numerical Experiment of Atmospheric Teleconnection Patterns in Northern Hemisphere |
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| Institution: | 1) (Chinese Academy of Meteorological Sciences, Beijing 100081); 2) (National Climate Center, Beijing 100081) |
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| Abstract: | The study is aiming at researching the existence, spatial-temporal features and the formation causes of circulation teleconnection patterns on the time scale of dekad in the Northern Hemisphere by using the techniques of diagnostic analysis and numerical modeling. The results show that the five types of teleconnection patterns are very clear on the scale of dekad, being strong in winter and weak in summer; the characteristic index series of each pattern has its inherent periodicity; the anomalous SST in some ocean regions can stimulate some relevant teleconnection patterns and there are no-linter interactions among the five types of teleconnection patterns. The five types of teleconnection patterns have good relationships with the general circulation and weather anomaly, so that they can be the basis of studying long-range weather process and prediction methods. |
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| Keywords: | Teleconnection Time scale of dekad Characteristic index Sensitive experiment |
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