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Open AccessArticle

Multifractal Detrended Cross-Correlation Analysis of Global Methane and Temperature

Climate and Climatic Change Group, Section of Environmental Physics and Meteorology, Department of Physics, National and Kapodistrian University of Athens, 15784 Athens, Greece
Department of Weather Stations, Hellenic National Meteorological Service (HNMS), 16777 Athens, Greece
Author to whom correspondence should be addressed.
Remote Sens. 2020, 12(3), 557;
Received: 30 December 2019 / Revised: 31 January 2020 / Accepted: 4 February 2020 / Published: 7 February 2020
(This article belongs to the Collection Feature Papers for Section Environmental Remote Sensing)
Multifractal Detrended Cross-Correlation Analysis (MF-DCCA) was applied to time series of global methane concentrations and remotely-sensed temperature anomalies of the global lower and mid-troposphere, with the purpose of investigating the multifractal characteristics of their cross-correlated time series and examining their interaction in terms of nonlinear analysis. The findings revealed the multifractal nature of the cross-correlated time series and the existence of positive persistence. It was also found that the cross-correlation in the lower troposphere displayed more abundant multifractal characteristics when compared to the mid-troposphere. The source of multifractality in both cases was found to be mainly the dependence of long-range correlations on different fluctuation magnitudes. Multifractal Detrended Fluctuation Analysis (MF-DFA) was also applied to the time series of global methane and global lower and mid-tropospheric temperature anomalies to separately study their multifractal properties. From the results, it was found that the cross-correlated time series exhibit similar multifractal characteristics to the component time series. This could be another sign of the dynamic interaction between the two climate variables. View Full-Text
Keywords: multifractal detrended cross-correlation analysis; methane; temperature; climate change; climate dynamics multifractal detrended cross-correlation analysis; methane; temperature; climate change; climate dynamics
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MDPI and ACS Style

Tzanis, C.G.; Koutsogiannis, I.; Philippopoulos, K.; Kalamaras, N. Multifractal Detrended Cross-Correlation Analysis of Global Methane and Temperature. Remote Sens. 2020, 12, 557.

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