 Climate change is causing extreme weather conditions around the world, which can lead to simultaneous crop failures in multiple regions. These failures can be caused by a strong meandering jet stream, which is difficult to predict with current climate models. The models do accurately represent the atmospheric patterns and surface weather anomalies, but they tend to underestimate the negative effects on crops. This means that future assessments of regional and concurrent crop losses due to meandering jet states are highly uncertain. To address these uncertainties, researchers must identify model biases and adjust them accordingly. This article was authored by Kaj Kornhubber, Kori Lesk, Karl F. Schlussner, and others.