Multifractal analysis of air temperature in Brazil

Abstract In view of current concerns over global warming and climate change, in order to contribute to a better geographically explicit understanding of complexity of temperature dynamics over the territory of Brazil over the last three decades, in this work we investigate multifractal properties of daily means of air temperature recorded at 265 meteorological stations, by using multifractal detrended fluctuation analysis. All series exhibit persistent long-term correlations (indicated by a Hurst exponent larger than 0.5), and multifractality with dominance of small fluctuations (indicated by right skewed multifractal spectrum). Northern and northeastern parts of this continental size country (that belong to tropical and semi-arid climate zone) exhibit stronger persistency and weaker multifractality, while southern part of the country (that belongs to sub-tropical climate zone) exhibits opposite characteristics, weaker persistency and stronger multifractality. This study contributes to a better understanding of the stochastic processes that generate air temperature variability in Brazil over the last decades.

• Publication year

  2020

• Venue

  Physica A-statistical Mechanics and Its Applications

• Publication date

  2020-07-01

• Fields of study

  Geography, Environmental Science

• Identifiers
  DOI 10.1016/j.physa.2020.124333
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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