Abstract
Anthropogenic emissions of carbon dioxide (CO2) are the most important greenhouse gas. However, until now, no research has investigated the persistence of global CO2 emissions over a very long period of time. This work aims to fill this gap by examining the persistence of shocks to global CO2 emissions with a dataset of more than 2000 years. To this end, the study applies a battery of unit root tests by considering sharp and smooth structural shifts as well as the frequency domain properties of the series. Lee-Strazicich method results reveal that sharp break dates relate to the influenza pandemic of 1557 and the invention of the steam engine in 1712, and these historical events led to changes in the trend function of CO2 emissions. The findings of the Fourier Lagrange Multiplier and Fourier wavelet unit root tests illustrate that global CO2 emissions contain a unit root and do not exhibit mean-reverting behavior, thus external shocks have permanent effects on CO2 emissions. The results suggest that a reduction in global CO2 emissions is possible if effective environmental and energy policies established in international meetings such as Rio Conference, Kyoto Protocol Paris Agreement, and the United Nations Sustainable Development Summit are properly implemented.
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Source: CO2.earth (2021)
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SE: conceptualization, data curation, formal analysis, methodology, software, validation; UKP: writing—original draft, visualization; SAS: supervision, writing—original draft, writing—review and editing; IO: writing—original draft, writing—review and editing.
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Erdogan, S., Pata, U.K., Solarin, S.A. et al. On the persistence of shocks to global CO2 emissions: a historical data perspective (0 to 2014). Environ Sci Pollut Res 29, 77311–77320 (2022). https://doi.org/10.1007/s11356-022-21278-8
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DOI: https://doi.org/10.1007/s11356-022-21278-8