The multifractal nature of dew point

Chris G. Tzanis, Nikolaos Kalamaras, Kostas Philippopoulos and Despina Deligiorgi

Physica A: Statistical Mechanics and its Applications, 2022, vol. 604, issue C

Abstract: Dew point temperature is a critical air moisture parameter, used widely in the study of climate. In this work, the main multifractal characteristics of dew point temperature are studied using the MF-DFA (Multifractal Detrended Fluctuation Analysis) method. The time series used are extracted from observational records (22 stations located in Greece) and from ECMWF reanalysis dataset. The multifractal spectrum is the basic tool of the study, since significant information about the multifractality can be derived. The results revealed the multifractal nature of all time series and that they exhibit long-range positive correlations. The multifractality of the time series stems mainly from long-range correlations of different fluctuation magnitudes. The spatial distributions of the main multifractal parameters showed their dependency on local topography, weather conditions and the land/sea distribution. Finally, the results from observational and reanalysis data are compared. The basic conclusions about the multifractal characteristics are virtually the same, regardless of whether the time series comes from observations or reanalysis data.

Keywords: Dew-point temperature; Multifractal Detrended Fluctuation Analysis; Non-linear dynamics (search for similar items in EconPapers)
Date: 2022
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:604:y:2022:i:c:s0378437122005878

DOI: 10.1016/j.physa.2022.127922

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