You say "@mjp2 is of the opinion that it is the IPCC's assertion that the Polar Vortex shall show equatorial motions as CO2 increases." I don't see that as a fair or accurate paraphrase of what I've posted on this. See below for what I've said. And what you think I've said isn't a basis for claiming that the IPCC is wrong.
There seems to be evidence of a weakening polar jet stream. There are studies we have discussed suggesting that may be causing a more wobbly jet stream and that may be resulting in both cold air being moved further south and warmth further north with the extremes of the wobbles. None of that is particularly "settled science" as you like to put it. The author of that particular work comments here on how that has tended to warm the west of the US and brought cold weather to the east in the last four or five years. And discusses how global warming may play a part in that. https://theconversation.com/is-warming-in-the-arctic-behind-this-years-crazy-winter-weather-89740 And there is a more general discussion on this and on how, regardless of those east coast cold spells, the globe as a whole is warmer even during these periods https://theconversation.com/how-frigid-polar-vortex-blasts-are-connected-to-global-warming-110653
These cold spells from jet stream meanders aren't an argument against global warming. They may be explained by the effects of warming on the jet stream/polar vortex, but we are not sure of that yet. Further work continues to study that.
By all means post quotes and links to any specific sections of the IPCC reports that say what you think they say. And then post any quotes/links to whatever evidence you believe shows that they were wrong.
But I'm not seeing you making any case for the IPCC being wrong nor even being clear what your argument is.
p.s. any IPCC link that doesn't work now because of the new IPCC website should be accessible by replacing 'www.' with 'archive.' in the address. .
