I don't remember ever seeing it but can a warm high such as the azores
high become and cold high if it is displaced for long enough? If it
happened would it get stronger or weaken in the same way a low does
when cold air goes all the way round. Some modells seem to be
suggesting that the Atlantic High (Displaced Azorse high) will move
north and combine with the Russian high as it moves west. Would mean
that the high would become a cold high?