Figure 1 (click for larger) is showing surface level air movement from weather GCM. The stuck cold air mass over North America is part of a lack of rotation of the polar air mass leading to a stuck Atlantic circulation bringing repeated storms to Northern Europe where the energy is from the ocean circa Caribbean but with a back feed from the coast of Africa. Around and around. The parallel red arrows are showing where cyclone and anti-cyclone meet, to the left there is a sharp merge of three flows, an unstable region, the shear point is where the St Jude’s day storm formed.
Two GIF animations, figure 2 for wind including figure 1, figure 3 for rain. Click to open full size and activate.
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