The faithful warmites take refuge in the contention that warmer overall temps is supposed to generate disruptions in normal weather patterns. The current strong H zones over Alaska and Wyoming with strong persistant L zones over Hudson Bay and US Plains has set up wind tunnel coming down from the polar regions and back over Utah clear to California. Huge masses of cold air over the North American land mass.
A truer, less ideological analysis will address the declining Gulf Stream and other formerly prevalent ocean currents which provide a very potent cross lattitude exchange of heat from the tropical/subtropical seas towards the polar regions with cold currents in some areas moving south into the tropic/subtropics. When the ocean currents wane, the atmosphere must make up the difference, and will do so. No absolute requirement for temp change to drive these phenomena. No compelling research over millions of years to prove a correlation.
