Long-time correlations of sea-level and local atmospheric pressure fluctuations at Trieste

A random walk analysis of pressure and sea-level fluctuations from daily data taken at Trieste during the period 1939–2002 is presented. It is shown that the associated time series display long-time autocorrelations up to time scales of several thousand of days, characterized by a Hurst exponent H ≈...

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Bibliographic Details
Published in:Physica A 2005-03, Vol.347, p.695-703
Main Authors: Beretta, Alessandro, Roman, H. Eduardo, Raicich, Fabio, Crisciani, Fulvio
Format: Article
Language:English
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Summary:A random walk analysis of pressure and sea-level fluctuations from daily data taken at Trieste during the period 1939–2002 is presented. It is shown that the associated time series display long-time autocorrelations up to time scales of several thousand of days, characterized by a Hurst exponent H ≈ 0.70 for sea-level and H ≈ 0.58 for pressure. The corresponding probability distribution functions depart from the Gaussian shape, displaying asymmetric tails. The series are found to be cross-correlated with a cross-correlation coefficient of about - 0.76 .
ISSN:0378-4371
1873-2119
DOI:10.1016/j.physa.2004.08.027