Climate & Environmentarticle2026-08-26

Coupling of Pacific and Indian Ocean variability disrupted by 19th century volcanism

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Abstract

The stability of inter-basin coupling between the tropical Pacific and Indian Ocean remains uncertain. This study shows that past volcanism can temporarily weaken this relationship, but recent decoupling due to global warming is unprecedented.

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View paper (DOI)Open access versionOpenAlexNature CommunicationsPublished 2026-08-26

Authors: Shouyi Wang, Delia W Oppo, Caroline C. Ummenhofer

Institutions: University of Colorado Boulder, Cooperative Institute for Research in Environmental Sciences, Woods Hole Oceanographic Institution