UK meteorology

Malcolm's thoughts on the 21st:
 
Malcolm's post for the 22nd:
 
Malcolm on the 23rd:
 
Malcolm's thoughts:
 
Just before I quote Malcolm's thoughts (which will be in two parts as he includes more imsges than our forum software can include on a single post), I thought I'd link this diagram showing how Walker circulation, which refers to air rising at one lturde and then advecting to a different latitude prior to sinking, helps define the rough locations of the polar jet and subtropical jet:


It can be seen that air returning north in the Ferrel Cell is the origin of our mid-latitude westerlies - of course, the westerly component of the flow is due to Coriolis which I discussed way back when in this thread. Were it not for that effect, the flow would be due north in the northern hemisphere.
 
Malcolm part 1:
 
Part 2:
 
Malcolm part 1:
 
Part 2: