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Modes of climate variability and their relationships with interhemispheric temperature asymmetry: a Granger causality analysis

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The aim of this paper is to investigate the relationships among Interhemispheric Temperature Asymmetry (ITA) and the principal modes of natural variability: the Atlantic Multidecadal Oscillation (AMO), the Southern Oscillation… Click to show full abstract

The aim of this paper is to investigate the relationships among Interhemispheric Temperature Asymmetry (ITA) and the principal modes of natural variability: the Atlantic Multidecadal Oscillation (AMO), the Southern Oscillation Index (SOI), and the Pacific Decadal Oscillation (PDO). In particular, Granger causality tests are used to capture the linkages among these variables. Our analysis provides strong evidence that AMO causes ITA, the causal role of PDO is weak, and SOI seems to have no causal influence.

Keywords: temperature asymmetry; interhemispheric temperature; granger causality; variability

Journal Title: Theoretical and Applied Climatology
Year Published: 2020

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