Fig. 1: Skilful seasonal (DJF) predictions from the ACE2 machine learning and GloSea dynamical models with a lead time of 1-3 months.
From: Skilful global seasonal predictions from a machine learning weather model trained on reanalysis data

Correlation score of mean sea level pressure (a), surface temperature (c) and precipitation (e) for ACE2 and GloSea (b, d, f) calculated across 1993/1994 to 2015/2016. Stippling indicates correlations are significantly different to zero (23 years, 95% confidence level).