| DIAGNOSIS OF LOW FREQUENCY COMPONENT OF ENSO VARIABILITY—PART Ⅰ:GLOBAL-SCALE DYNAMIC CHARACTERISTICS OF THE COMPONENT |
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| 引用本文： | 邹力,倪允琪.DIAGNOSIS OF LOW FREQUENCY COMPONENT OF ENSO VARIABILITY—PART Ⅰ:GLOBAL-SCALE DYNAMIC CHARACTERISTICS OF THE COMPONENT[J].Acta Meteorologica Sinica,1996(4). |
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| 作者姓名： | 邹力 倪允琪 |
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| 作者单位： | Department of Atmospheric Sciences Nanjing University.Nanjing 210093，Department of Atmospheric Sciences，Nanjing University.Nanjing 210093 |
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| 摘 要： | Composite investigation is performed of global dynamic characteristics of >3—4-year period low-frequency oscillation in ENSO variability of air-sea coupling in the context of monthly mean wind andSSTA.Evidence suggests that the horizontal(vertical)anomaly circulation at tropical latitudes(equatorial)exhibits their evolution to be,in substance,a kind of low-frequency wave slowly travel-ling eastward,featured by wave number 2 moving along the equator and zonal wind swiftly decayingoff the equator in relation to divergence/convergence:the time that the low-frequency wave takes tomove around the equator in its halfway is precisely the period of the ENSO low-frequency component(LFC)(approximately 4 years);the ocean also displays corresponding response to the component.
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