De temperatuur van de stratosfeer in de pool gaat de komende tijd flink omhoog.
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Whether this materialises as a high pressure towards the UK is unknown, as residual energy in the troposphere and the effects of the MJO will have an impact. My feeling is that we will have the potential for a blocked pattern slowly moving eastwards over a period of about 2 weeks. I doubt whether models will handle this too well at this range as it will be against the historic norms which are pre loaded into the forecasts.
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The jetstream will be shoved well south again come Feb after a temporary buckle last week of Jan due to the magnetic disturbances of the sun. This will see AZH ridge north and get absorbed into GHP/Arctic HP and I thin N to NE'ly winds will dominate first 10days+ of Feb before a migration east of the HP cell to Scandi. It is correct to not need a SSW/MMW that propogates downward to bring cold setup. As has been pointed out we have had sever cold this winter without one.
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