| 平流层下部气温年际异常的旋转主成分分析 |
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| 引用本文： | 章基嘉,吴洪宝.平流层下部气温年际异常的旋转主成分分析[J].应用气象学报,1995,6(3):265-272. |
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| 作者姓名： | 章基嘉 吴洪宝 |
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| 作者单位： | 1.国家气候中心，南京气象学院，内蒙古气象台 |
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| 基金项目： | 《八五》期间的“长期天气预报理论和方法研究”项目 |
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| 摘 要： | 利用旋转主成分方法分析了北半球冬季平流层下部月平均气温距平，得到的4个主要的空间分布型，分别表示中纬、低纬的纬向对称异常、太平洋北部暖中心和极区冷中心的异常。还指出中纬异常的时间演变最单调，整个冬季有持续性，年际变化呈现明显的准两年振荡周期(QBD)。
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| 关 键 词： | 平流层 气温 旋转主成分 |
A Rotated Principal Component Analysis of the Interannual Variability of Temperature in the Lower Stratosphere |
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| ZhangJiji,Wu Hongbao.A Rotated Principal Component Analysis of the Interannual Variability of Temperature in the Lower Stratosphere[J].Quarterly Journal of Applied Meteorology,1995,6(3):265-272. |
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| Authors: | ZhangJiji Wu Hongbao |
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| Affiliation: | 1.1) (National Climate Center, Beijing 100081); 2) (Nanjing Institute of Meteorology, Nanjing 210044); 3) (Meteorological Bureau of Inner Mongolia, Hohhot 010051) |
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| Abstract: | The interannual variability of the temperature in the lower stratosphere is studied by a rotated principal component analysis. Four fundamental spatial patterns have been obtained, which represent zonally symmetrical anomalies in middle latitudes and in low latitudes, the warm center anomaly in the Northern Pacific and the cold center anomaly near north pole, respectively, Additionally, temporal evolution of anomalies in middle latitudes is the most monotonous, the sign of anomalies is persistent for the whole winter and the interannual evolution clearly shows the character of QBO. |
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| Keywords: | Stratosphere Temperature Rotated principal component analysis |
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