The major differences in the Atlantic season to season are mainly the location of the ITCZ and the intenisty and number of disturbances coming off Africa. The majority of the north atlantic has a vast area of high pressure all year, so no matter what time of year it will look the same (unless you have a couple hurricanes barrelling on up:}). Yes, the jet is somewhat suppressed during the winter months, but that can be seen to some extent any time of the year. (Edit: the jet is generally stronger in winter, not suppressed. It is actually quite prevalent at upper-levels across the basin in the winter. Surface and upper-level features like jets are two entirely different ballgames. -Clark) The other main differences are the phases of the NAO, which govern the location and strength of the mid-latitude jet. That'll show up in satellite imagery as streets of cirrus clouds. Usually it's noticeable. Other than that it looks the same during the summer and winter.
-------------------- "I became insane with horrible periods of sanity"
Edgar Allan Poe
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