| 3—5年周期的波列结构 |
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| 引用本文： | 林学椿,于淑秋.3—5年周期的波列结构[J].大气科学,1991,15(3):87-96. |
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| 作者姓名： | 林学椿 于淑秋 |
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| 作者单位： | 国家气象局气象科学院天气动力研究所
(林学椿)，国家气象局气象科学院天气动力研究所(于淑秋) |
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| 摘 要： | 本文用滤波后的500hPa位势高度距平资料(1951.1—1986.12)的每一个格点和所有格点的同期相关场来讨论3—5年周期的水平结构。我们发现:3—5年周期具有明显的波列结构。在576张相关图中主要有三个波列,即太平洋北美波列、东亚大西洋波列和大西洋西部欧洲波列,并讨论了这些波列的落后相关及可能源地。
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| 关 键 词： | 大气环流年际变化 海气相互作用 长期天气预报 |
WAVETRAIN CONSTRUCTION OF 3-5 YEAR CYCLE |
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| Lin Xuechun and Yu Shuqiu.WAVETRAIN CONSTRUCTION OF 3-5 YEAR CYCLE[J].Chinese Journal of Atmospheric Sciences,1991,15(3):87-96. |
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| Authors: | Lin Xuechun and Yu Shuqiu |
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| Abstract: | Time series of all gridpoints are calculated by a band-pass filter of 3-5year cycle on the Northern Hemisphere 500 hPa height departure from Jan. 1951 to Dec. 1986.Level construction of the 3-5 year cycle is discussed by simultaneous temporal correlation between filtered-500 hPa height departure of each gndpoint and of at the Northern Hemisphere locations. We find that the 3-5 year cycle is provided with wavetrain construction. There are main three wavetrains on the 576 correlation figures. The source and propagation direction of these wavetrains are also discussed. |
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| Keywords: | Interannual change of atmospheric circulation Ocean-atmosphere interaction Long-range weather forecasting |
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