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Open AccessArticle

Multifractal Detrended Cross-Correlation Analysis of Global Methane and Temperature

1
Climate and Climatic Change Group, Section of Environmental Physics and Meteorology, Department of Physics, National and Kapodistrian University of Athens, 15784 Athens, Greece
2
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; https://doi.org/10.3390/rs12030557
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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