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Warning words in a warming world: Central bank communication and climate change

Emanuele Campiglio, Jérôme Deyris, Davide Romelli and Ginevra Scalisi

European Economic Review, 2025, vol. 178, issue C

Abstract: We study climate-related central bank communication using a novel dataset containing 35,487 speeches delivered by 131 central banks from 1986 to 2023. We employ natural language processing techniques to identify and trace the evolution of key climate-related narratives centred around (i) green finance, and (ii) climate-related financial risks. We find that central bank public communication strategies are primarily driven by underlying institutional factors, rather than exposure to climate-related risks. We then study the impact of climate-related communication on financial market dynamics through both a portfolio and a firm-level analysis. We find that equity returns of ‘green’ firms outperform those of ‘dirty’ firms when central banks engage more frequently and intensely with climate-related topics.

Keywords: Central banking; Climate change; Low-carbon transition; Central bank communication; Climate-related risks; Green finance; Text analysis; Topic modelling; Asset pricing (search for similar items in EconPapers)
JEL-codes: C38 E44 E58 Q54 Z13 (search for similar items in EconPapers)
Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:eee:eecrev:v:178:y:2025:i:c:s0014292125001515

DOI: 10.1016/j.euroecorev.2025.105101

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