Geek alert! Polar cap diagnostics more robust on weakening of the #PolarVortex (PV). Geopotential height anomaly forecast predicting full column warming & strong heat flux convergence in the polar stratosphere for next week. Explains accelerating model forecast of a weakening PV. pic.twitter.com/uzvxvAK67K

— Judah Cohen (@judah47) January 13, 2023