anticyclone glaciaire

OBS: anticyclone semi-permanent : Région où des hautes pressions prédominent largement durant une partie importante de l'année et où apparaît un anticyclone sur les cartes décrivant la moyenne mensuelle de la pression.

OBS: semi-permanent anticyclone: Region where high pressures largely predominate during a major portion of the year and for which an anticyclone appears on the mean monthly pressure charts.
OBS: As presented by W. H. Hobbs, it was thought that these [glacial] anticyclones played a dominant part in the world atmospheric circulation, but modern theory backed by limited observation has tended to diminish their importance and even to question their reality.