Hi and thank you Tim for the great article .  The meridional jetstream is more prevalent during the last few years , it has been wavy and even very wavy at some occasions , during the prevalence of meridional jetstreams weather and climatic predictions get less accurate as such less reliable and foggy . how do you correct for the margin of error in seasonal predictions with the presence of such wavy jetstream , do your weather prediction models have something built in that can account for its effect ?

Many thanks

BR

Mohammad Alkhateeb

Jordan.