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| Titel: |
The attractor dimension of a quasi-geostrophic two-layer system |
| Auteur: |
Yano, Jun-Ichi Mukougawa, Hitoshi |
| Verschenen in: |
Geophysical & astrophysical fluid dynamics |
| Paginering: | Jaargang 65 (1992) nr. 1-4 pagina's 77-91 |
| Jaar: |
1992-07-01 |
| Inhoud: |
The change of the attractor dimension (Kaplan-Yorke dimension) with an increase in the number of modes included in the Fourier expansion is investigated for a quasi-geostrophic two-layer system with topographic forcing. A particular case has been chosen such that the attractor is represented by a single “weather regime”, consisting of weak fluctuations around a fixed flow pattern. In this respect, the large-scale flow structure isleast “chaotic”. Anticipation is that this kind of organized flow may be described by a low dimensional attractor. No convergence of the dimension is found by increasing the total number of Fourier modes up to 210. The result suggests that the quasi-geostrophic system cannot be reduced to a low-dimensional dynamical system in general. The crucial importance of a large number of small scale modes to predict the planetary scale dynamics, is suggested. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
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