More on impacts of the recent stratospheric warming: the long delay in post-SSW stratosphere-troposphere coupling is not typical of vortex split events. Delayed and weaker coupling appears more typical of weaker/displacement events. (SSW dates from Barriopedro & Calvo 2014) pic.twitter.com/cAy2HVAr74

— World Climate Service (@WorldClimateSvc) January 18, 2019