Long-Term Forecasting of Global Carbon Dioxide Emissions: Reducing Uncertainties Using a Per Capita Approach
Article first published online: 7 JUN 2013
Copyright © 2013 John Wiley & Sons, Ltd.
Journal of Forecasting
Volume 32, Issue 5, pages 435–451, August 2013
How to Cite
Mckitrick, R., Strazicich, M. C. and Lee, J. (2013), Long-Term Forecasting of Global Carbon Dioxide Emissions: Reducing Uncertainties Using a Per Capita Approach. J. Forecast., 32: 435–451. doi: 10.1002/for.2248
- Issue published online: 23 JUL 2013
- Article first published online: 7 JUN 2013
- Manuscript Accepted: 25 JUN 2012
- Manuscript Revised: 8 JUN 2012
- Manuscript Received: 10 JUN 2011
- global warming;
- structural break;
- future emission scenarios
Global CO2 emission forecasts span such a wide range as to yield little guidance for climate policy and analysis. But global per capita emissions appear to be better constrained than total emissions, which we argue has an economic justification. Trend stationarity of per capita emissions may provide a means of characterizing the relative likelihood of global forecasts. On data spanning 1950 to 2009 a unit root hypothesis allowing for endogenous structural breaks is rejected, but adding in the 2010 observation pushes the p-value slightly over 0.1. Since structural breaks cannot be detected at the end of sample this may simply indicate a power problem. Using Monte Carlo simulations we conclude that the lower half of a well-known suite of IPCC emission scenarios is more likely to occur than the upper half, and the top quartile is particularly difficult to justify. Copyright © 2013 John Wiley & Sons, Ltd.