| タイトル | Aspects of the 40-50 day oscillation during the northern winter as inferred from outgoing longwave radiation |
| 著者（英） | Lau, K.-M.; Chan, P. H. |
| 著者所属（英） | Applied Research Corp.|NASA Goddard Space Flight Center |
| 発行日 | 1985-11-01 |
| 言語 | eng |
| 内容記述 | One-point correlation statistics and extended empirical orthogonal function analysis are used to show the existence of a principal mode of oscillation in the intraseasonal variability (ISV) of tropical convection. The data analyzed were derived from NOAA Outgoing Longwave Radiation data covering seven 6 mo periods from 1974-83. The data is filtered to remove fluctuations on time scales under 5 days and by subtracting a least-squares parabola to eliminate seasonal means. The previously-known 40-50 day oscillation is found to be the most prevalent component of the ISV of tropical convection. An E-W dipole forms and propagates over the equatorial Indian Ocean, then stalls and intensifies over Indonesia and the equatorial Indian Ocean, then stalls and intensifies over Indonesia and the equatorial central Pacific. Various anomalies generated in association with the dipole and dependent on its exact location when stalled are discussed. |
| NASA分類 | METEOROLOGY AND CLIMATOLOGY |
| レポートNO | 86A17330 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/387369 |
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