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Evaluating Global Warming Potentials as Historical Temperature Proxies: an application of ACC2 Inverse Calculation

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Author Info

  • Katsumasa Tanaka
  • Richard S.J. Tol

    ()
    (Economic and Social Research Institute, Dublin)

  • Dmitry Rokityanskiy
  • Brian C. O'Neill
  • Michael Obersteiner

Abstract

Global Warming Potentials (GWPs) are evaluated as proxies of the historical temperature by applying them to convert historical CH4 and N2O emissions to equivalent CO2 emissions. Our GWP analysis is based on the historical Earth system evolution obtained from the inverse calculation for the Aggregated Carbon Cycle, Atmospheric Cycle, and Climate Model (ACC2). Indices higher than the Kyoto GWPs are required to reproduce the historical temperature. The GWP for N2O, in particular, does not approximate the historical temperature with any time horizon because the GWP definition and calculations assume a background system different from the ACC2 inversion results. In addition, indices have to be progressively updated upon the acquisition of new measurements and/or the change in our understanding on the Earth system processes.

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File URL: http://www.fnu.zmaw.de/fileadmin/fnu-files/publication/working-papers/WP-FNU118.pdf
File Function: First version, 2006
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Bibliographic Info

Paper provided by Research unit Sustainability and Global Change, Hamburg University in its series Working Papers with number FNU-118.

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Length: 45 pages
Date of creation: Sep 2006
Date of revision: Sep 2006
Handle: RePEc:sgc:wpaper:118

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Keywords: global warming potentials;

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  1. John Reilly & Kenneth Richards, 1993. "Climate change damage and the trace gas index issue," Environmental & Resource Economics, European Association of Environmental and Resource Economists, vol. 3(1), pages 41-61, February.
  2. Richard S. Eckaus, 1992. "Comparing the Effects of Greenhouse Gas Emissions on Global Warming," The Energy Journal, International Association for Energy Economics, vol. 0(Number 1), pages 25-36.
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