CYCLONES AND ANTICYCLONES IN EUROPE.
WEATHER WING (2ND) NEW YORK 09332
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Numerous studies, dating from 1783, have been conducted on cyclone and anticyclone paths. The study discusses movement and generation of pressure centers, both cyclones and anticyclones, from a theoretical and climatological point of view. It discusses, by month, the pressure system paths over Europe areas of genesis and the relationship of paths to 500-mb circulation. Cyclogenesis on the lee side of a terrain barrier is discussed in light of the conservation of potential vorticity. Pettersens development formula is used to show the effect of land-locked bodies of water on genesis of pressure systems. Cyclone and anticyclone tracks vary from season to season, month to month. The tracks, shown on charts, are discussed in light of these variations. There are favored latitudes for cyclogenesis 40, 49-57, and 70N and anticyclogenesis 45N, as well as favored areas. The areas and factors affecting genesis are discussed. Author