A Multicointegration Model of Global Climate Change

Stephan B. Bruns, Zsuzsanna Csereklyei and David Stern
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Stephan B. Bruns: Department of Economics, University of Göttingen, Germany

CCEP Working Papers from Centre for Climate & Energy Policy, Crawford School of Public Policy, The Australian National University

Abstract: We model the role of the ocean in climate change, using the concept of multicointegration. Surface temperature and radiative forcing cointegrate and the accumulated cointegration disequilibria represent the change in Earth system heat content, which is predominantly stored in the ocean. System heat content in turn cointegrates with surface temperature. Using a multicointegrating I(2) model, we find that the climate sensitivity is 2.8ºC and the rate of adjustment to equilibrium is realistically slow. These results contrast strongly with those from I(1) cointegration models and are more consistent with global circulation models. We also estimate Earth system heat content as a latent variable for the full period, 1850-2014, and this predicted heat content cointegrates with available ocean heat content observations for 1940-2014.

Keywords: Climate sensitivity; econometrics; ocean heat content (search for similar items in EconPapers)
JEL-codes: C32 Q54 (search for similar items in EconPapers)
Date: 2018-01
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Related works:
Journal Article: A multicointegration model of global climate change (2020)
Working Paper: A multicointegration model of global climate change (2018)
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Persistent link: https://EconPapers.repec.org/RePEc:een:ccepwp:1801

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