Upper-level anticyclone

upper-level anticyclone

(Also called upper-level high, upper anticyclone, upper high, high-level anticyclone, high aloft.) An anticyclonic circulation existing in the upper air.

This often refers to such anticyclones only when they are much more pronounced at upper levels than at and near the earth's surface.

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An atmospheric anticyclonic circulation, a closed circulation. The wind in an anticyclone is in the clockwise direction in the Northern Hemisphere and counterclockwise in the Southern Hemisphere.