dorsal/arxiv
View SchemaPower-Law Persistence in the Atmosphere: Analysis and Applications
| Authors | Armin Bunde, Jan Eichner, Rathinaswamy Govindan, Shlomo Havlin, Eva Koscielny-Bunde, Diego Rybski, Dmitry Vjushin |
|---|---|
| Categories | |
| ArXiv ID | physics/0208019 |
| URL | https://arxiv.org/abs/physics/0208019 |
| DOI | 10.1016/S0378-4371(02)01050-6 |
| Journal | In: ``Nonextensive Entropy - Interdisciplinary Applications'', edited by M. Gell-Mann and C. Tsallis, New York Oxford University Press, 2003 |
Abstract
We review recent results on the appearance of long-term persistence in climatic records and their relevance for the evaluation of global climate models and rare events.The persistence can be characterized, for example, by the correlation C(s) of temperature variations separated by s days.We show that, contrary to previous expectations, C(s) decays for large s as a power law, C(s) ~ s^(-gamma). For continental stations, the exponent gamma is always close to 0.7, while for stations on islands gamma is around 0.4. In contrast to the temperature fluctuations, the fluctuations of the rainfall usually cannot be characterized by long-term power-law correlations but rather by pronounced short-term correlations. The universal persistence law for the temperature fluctuations on continental stations represents an ideal (and uncomfortable) test-bed for the state of-the-art global climate models and allows us to evaluate their performance. In addition, the presence of long-term correlations leads to a novel approach for evaluating the statistics of rare events.
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"abstract": "We review recent results on the appearance of long-term persistence in\nclimatic records and their relevance for the evaluation of global climate\nmodels and rare events.The persistence can be characterized, for example, by\nthe correlation C(s) of temperature variations separated by s days.We show\nthat, contrary to previous expectations, C(s) decays for large s as a power\nlaw, C(s) ~ s^(-gamma). For continental stations, the exponent gamma is always\nclose to 0.7, while for stations on islands gamma is around 0.4. In contrast to\nthe temperature fluctuations, the fluctuations of the rainfall usually cannot\nbe characterized by long-term power-law correlations but rather by pronounced\nshort-term correlations. The universal persistence law for the temperature\nfluctuations on continental stations represents an ideal (and uncomfortable)\ntest-bed for the state of-the-art global climate models and allows us to\nevaluate their performance. In addition, the presence of long-term correlations\nleads to a novel approach for evaluating the statistics of rare events.",
"arxiv_id": "physics/0208019",
"authors": [
"Armin Bunde",
"Jan Eichner",
"Rathinaswamy Govindan",
"Shlomo Havlin",
"Eva Koscielny-Bunde",
"Diego Rybski",
"Dmitry Vjushin"
],
"categories": [
"physics.ao-ph",
"cond-mat.stat-mech",
"physics.data-an"
],
"doi": "10.1016/S0378-4371(02)01050-6",
"journal_ref": "In: ``Nonextensive Entropy - Interdisciplinary Applications\u0027\u0027,\n edited by M. Gell-Mann and C. Tsallis, New York Oxford University Press, 2003",
"title": "Power-Law Persistence in the Atmosphere: Analysis and Applications",
"url": "https://arxiv.org/abs/physics/0208019"
},
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