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| Titel |
A chaotically driven model climate: extreme events and snapshot attractors |
| VerfasserIn |
T. Bódai, Gy. Károlyi, T. Tél |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1023-5809
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| Digitales Dokument |
URL |
| Erschienen |
In: Nonlinear Processes in Geophysics ; 18, no. 5 ; Nr. 18, no. 5 (2011-09-07), S.573-580 |
| Datensatznummer |
250013964
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| Publikation (Nr.) |
 copernicus.org/npg-18-573-2011.pdf |
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| Zusammenfassung |
| In a low-order chaotic global atmospheric circulation model the
effects of deterministic chaotic driving are investigated. As a
result of driving, peak-over-threshold type extreme events, e.g. cyclonic
activity in the model, become more extreme, with increased
frequency of recurrence. When the characteristic time of the driving
is comparable to that of the undriven system, a resonance effect
with amplified variance shows up. For very fast driving we find a
reduced enhancement of variance, which is also the case with white
noise driving. Snapshot attractors and their natural measures are
determined as a function of time, and a resonance effects is also
identified. The extreme value statistics of group maxima is found to
follow a Weibull distribution. |
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