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A. Hannart
,
J. Pearl
,
F. E. L. Otto
,
P. Naveau
, and
M. Ghil

Abstract

The emergence of clear semantics for causal claims and of a sound logic for causal reasoning is relatively recent, with the consolidation over the past decades of a coherent theoretical corpus of definitions, concepts, and methods of general applicability that is anchored into counterfactuals. The latter corpus has proved to be of high practical interest in numerous applied fields (e.g., epidemiology, economics, and social science). In spite of their rather consensual nature and proven efficacy, these definitions and methods are to a large extent not used in detection and attribution (D&A). This article gives a brief overview of the main concepts underpinning the causal theory and proposes some methodological extensions for the causal attribution of weather and climate-related events that are rooted into the latter. Implications for the formulation of causal claims and their uncertainty are finally discussed.

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Chih-Pei Chang
,
Michael Ghil
,
Hung-Chi Kuo
,
Mojib Latif
,
Chung-Hsiung Sui
, and
John M. Wallace
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