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Title

2C or not 2C?

Publication Year

2013

Author(s)
  • Guivarch, Celine
  • Hallegatte, Stephane
Source
GLOBAL ENVIRONMENTAL CHANGE-HUMAN AND POLICY DIMENSIONS Volume: 23 Issue: 1 Pages: 179-192 Published: 2013
ISSN
0959-3780
Abstract

Political attention has increasingly focused on limiting warming to 2 degrees C. However, there is no consensus on both questions Is the 2 degrees C target achievable? and What should be done with this target that becomes increasingly difficult to achieve?. This paper aims at disentangling the points of deep uncertainty underlying this absence on consensus. It first gives simple visualizations of the challenge posed by the 2 degrees C target and shows how key assumptions (on the points of deep uncertainty) influence the answer to the target achievability question. It then proposes an uncertainties and decisions tree, linking different beliefs on climate change, the achievability of different policies, and current international policy dynamics to various options to move forward on climate change. (C) 2012 Elsevier Ltd. All rights reserved.

Author Keyword(s)
  • Feasibility of 2 degrees C target
  • Climate change negotiations
  • Deep uncertainty
KeyWord(s) Plus
  • OF-CLIMATE-CHANGE
  • CONCENTRATION TARGETS
  • CO2 EMISSIONS
  • BIO-ENERGY
  • DEGREES-C
  • ECONOMICS
  • UNCERTAINTY
  • COOPERATION
  • MITIGATION
  • SCENARIOS
ESI Discipline(s)
  • Environment/Ecology
  • Social Sciences
Web of Science Category(ies)
  • Environmental Sciences
  • Environmental Studies
  • Geography
Adress(es)

[Hallegatte, Stephane] Ecole Natl Meteorol, Meteo France, France

Reprint Adress

Guivarch, C (reprint author), 45Bis Ave Belle Gabrielle, F-94736 Nogent Sur Marne, France.

Country(ies)
  • France
CNRS - Adress(es)

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Accession Number
WOS:000315617200017
uid:/LQJH5WCN
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