Articles | Volume 4, issue 3
https://doi.org/10.5194/wcd-4-701-2023
https://doi.org/10.5194/wcd-4-701-2023
Research article
 | 
14 Aug 2023
Research article |  | 14 Aug 2023

Validation of boreal summer tropical–extratropical causal links in seasonal forecasts

Giorgia Di Capua, Dim Coumou, Bart van den Hurk, Antje Weisheimer, Andrew G. Turner, and Reik V. Donner

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Short summary
Heavy rainfall in tropical regions interacts with mid-latitude circulation patterns, and this interaction can explain weather patterns in the Northern Hemisphere during summer. In this analysis we detect these tropical–extratropical interaction pattern both in observational datasets and data obtained by atmospheric models and assess how well atmospheric models can reproduce the observed patterns. We find a good agreement although these relationships are weaker in model data.