Title: A multifractal analysis of time series of atmospheric CO₂ concentration

Authors: Srimonti Dutta; Dipak Ghosh; Sucharita Chatterjee

Addresses: Department of Physics, Behala College, Parnasree Pally, 700060 Kolkata, India ' Physics Department, Jadavpur University, 700032 Kolkata, India ' Department of Physics, Bangabasi College, 700009 Kolkata, India

Abstract: This paper studies the multifractality of the time series of atmospheric CO₂ concentration using the MFDFA methodology. The data of the atmospheric CO₂ recorded from Jubany Station, (Antarctica) during the period 1994-2009 was analysed. The data was further divided to subsets of four years and the analysis was repeated. The results show that the complete set reveals more complex pattern than subsets in most of the cases. The degree of multifractality and degree of correlation does not vary appreciably in recent past. However a low value of suggests that the atmospheric CO₂ concentration is expected to increase at a higher rate in the future.

Keywords: non-stationary time series; multifractal; monofractal; degree of multifractality; long range correlation.

DOI: 10.1504/IJGW.2018.091529

International Journal of Global Warming, 2018 Vol.14 No.4, pp.403 - 416

Received: 04 May 2016
Accepted: 14 Oct 2016
Published online: 04 May 2018 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article