Climate, Volume 12, Issue 7 (July 2024) – 19 articles
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In recent years, there has been intense scientific debate as to whether the Atlantic Multidecadal Oscillation (AMO) is a genuine representation of a natural variability of climate or is substantially driven by external factors. In this study, we perform an analysis of the influence of natural and anthropogenic forcings on the AMO behaviour by means of two data-driven methods: a linear Granger causality analysis and a nonlinear extension of this method. Our results show that natural forcings do not have any causal role in relation to AMO in both linear and nonlinear analyses. Instead, a certain influence of anthropogenic forcing is found in a linear framework. This is a further hint that our forcing role is important, and sometimes even natural variability may not really be natural. View this paper
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