Diffusion of Emissions Abating Technology
نویسنده
چکیده
The environmental Kuznets curve (EKC) has been extensively criticized on econometric and theoretical grounds. Recent econometric results and case studies show that national emissions of important pollutants are monotonic in income but changes in technology can lead over time to reductions in pollution a lowering of the EKC and that pollution reducing innovations and standards may be adopted with relatively short time lags in some developing countries. This study combines the recent literature on measuring environmental efficiency and technological change using production frontier methods with the use of the Kalman filter – a time series method for signal extraction to model the state of abatement technology in a panel of countries over time. The EKC is reformulated as the best practice technology frontier countries’ position relative to the frontier reflects the degree to which they have adopted best practice. The results are used to determine whether countries are converging to best practice over time and how many years it will take each country to achieve current best practice. The model is applied to sulfur dioxide emissions from sixteen mainly developed countries. Acknowledgements I thank Mark Heil, Donald Siegel, Donald Vitaliano, Larry Karp, Peter Young, and three anonymous EPA reviewers for useful discussions and suggestions and Lining He for research assistance. The US EPA provided funding under RFQ-DC-04-00027: “Economic Development and Radiatively Important Pollution”.
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