Persistence in a Simple Model for the Earth's Atmosphere Temperature Fluctuations

Details Persistence in a Simple Model for the Earth's Atmosphere Temperature Fluctuations Persistence in a Simple Model for the Earth's Atmosphere Temperature Fluctuations

2005-06-13

arxiv.org/abs/physics/0506116v2

Fluctuation and Noise Letters, Vol. 5, No. 3 (2005) L365 -- L374

Physics

Atmospheric and Oceanic Physics

14 pages, 7 figures, final version

Scientific paper

The effect caused by the presence of a number of distinct time scales in a simple stochastic model for the Earth's atmosphere temperature fluctuations is studied. The model is described by a dissipative dynamics consisting of a set of coupled stochastic evolution equations. The system shows features that resemble recent observations. In contrast to other approaches, like autoregressive models, the fluctuations of the atmosphere's temperature depend on parameters with clear physical meaning. A reduced version of the model is constructed and its temporal autocovariance function is explicitly written.

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