Journal
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
Volume 320, Issue -, Pages 581-589Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0378-4371(02)01662-X
Keywords
persistence; sea temperature fluctuations; DFA; scaling
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We study the temporal correlations in the sea surface temperature (SST) fluctuations around the seasonal mean values in the Atlantic and Pacific Oceans. We apply a method that systematically overcome possible trends in the data. We find that the SST persistence, characterized by the correlation C(s) of temperature fluctuations separated by a time period s, displays two different regimes. In the short-time regime which extends up to roughly 10 months, the temperature fluctuations display a non-stationary behavior for both oceans, while in the asymptotic regime it becomes stationary. The long-term correlations decay as C(s) similar to s(-gamma) with gamma similar to 0.4 for both oceans which is different from gamma similar to 0.7 found for atmospheric land temperature. (C) 2002 Elsevier Science B.V. All rights reserved.
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