frontal lifting

frontal lifting

[¦frənt·əl ′lift·iŋ]
(meteorology)
The forced ascent of the warmer, less-dense air at and near a front, occurring whenever the relative velocities of the two air masses are such that they converge at the front.
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References in periodicals archive ?
While there must be a lifting source, such as daytime heating, frontal lifting or terrain (orthographic lifting), the common thread in all vertical development is adiabatic expansion and subsequent condensation.