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Atmosphere 2019, 10(2), 45; https://doi.org/10.3390/atmos10020045

Distribution of Air Temperature Multifractal Characteristics Over Greece

1
Section of Environmental Physics and Meteorology, Department of Physics, National and Kapodistrian University of Athens, Athens 15784, Greece
2
Department of Weather Stations, Hellenic National Meteorological Service (HNMS), Athens 16777, Greece
*
Author to whom correspondence should be addressed.
Received: 21 December 2018 / Revised: 20 January 2019 / Accepted: 21 January 2019 / Published: 24 January 2019
(This article belongs to the Section Climatology and Meteorology)
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Abstract

In this study, Multifractal Detrended Fluctuation Analysis (MF-DFA) is applied to daily temperature time series (mean, maximum and minimum values) from 22 Greek meteorological stations with the purpose of examining firstly their scaling behavior and then checking if there are any differences in their multifractal characteristics. The results showed that the behavior is the same at almost all stations, i.e., time series are positive long-term correlated and their multifractal structure is insensitive to local fluctuations with large magnitude. Moreover, this study deals with the spatial distribution of the main characteristics of multifractal (singularity) spectrum: the dominant Hurst exponent, the width of the spectrum, the asymmetry and the truncation type of the spectrum. The spatial distributions are discussed in terms of possible effects from various climatic features. In general, local atmospheric circulation and weather conditions are found to affect the shape of the spectrum and the corresponding spatial distributions. Furthermore, the intercorrelation of the main multifractal spectrum parameters resulted in a well-defined group of stations sharing similar multifractal characteristics. The results indicate the usefulness of the non-linear analysis in climate research due to the complex interactions among the natural processes. View Full-Text
Keywords: nonlinear dynamics; Multifractal Detrended Fluctuation Analysis; climatology; air temperature nonlinear dynamics; Multifractal Detrended Fluctuation Analysis; climatology; air temperature
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Kalamaras, N.; Tzanis, C.G.; Deligiorgi, D.; Philippopoulos, K.; Koutsogiannis, I. Distribution of Air Temperature Multifractal Characteristics Over Greece. Atmosphere 2019, 10, 45.

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