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L'objectif « zéro émissions nettes » de l'Accord de Paris : signification et implications
Author(s) -
Quentin Perrier,
Céline Guivarch,
Oliviér Boucher
Publication year - 2018
Publication title -
la météorologie
Language(s) - English
Resource type - Journals
eISSN - 2107-0830
pISSN - 0026-1181
DOI - 10.4267/2042/68784
Subject(s) - humanities , philosophy
espanolThe Paris Agreement includes the objective of achieving 'net zero emissions' of greenhouse gases in the second half of the century. The exact wording, however, raises several scientific questions.How to distinguish between anthropogenic emissions and removals subject to the agreement, and the natural flows of these same gases? Which gases should be included in the agreement, and how to compare gases with different physical properties? How to ensure the compatibility of net zero emissions with the other objectives of the Paris Agreement? This article discusses possible choices and their implications, in order to provide useful recommendations for clarifying and operationalizing the global objectives of the Paris Agreement. francaisL'Accord de Paris inclut l'objectif d'atteindre le « zero emissions nettes » de gaz a effet de serre dans la seconde moitie du siecle. La formulation exacte de cet objectif souleve cependant plusieurs questions d'ordre scientifique. Comment distinguer les emissions et les absorptions anthropiques concernees par l'accord des flux naturels de ces memes gaz ? Quels gaz inclure dans l'accord, et comment comparer des gaz aux proprietes physiques differentes ? Comment assurer la compatibilite du zero emissions nettes avec les autres objectifs de l'Accord de Paris ? Cet article discute les choix possibles et leurs implications, afin de fournir des recommandations utiles pour preciser et rendre operationnels les objectifs globaux de l'Accord de Paris.

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