Assertion: cold front's air | /r/HasProperty | forced
Facets:
value: upward
type: MANNER
Source sentences:
text: Again, as it progresses the air in front is forced aloft.
text: Weather occurring with a front depends on (1) the amount of moisture available, (2) the degree of stability of the air that is forced upward, (3) the slope of the front, (4) the speed of frontal movement, and (5) the upper wind flow.
text: As the warm air is forced upward, these clouds will begin to show vertical development, known as towering cumulus clouds.
text: Occlusion: Meteorology a process by which the cold front of a rotating low-pressure system catches up the warm front, so that the warm air between them is forced upwards.
text: upwards less dense warm air is forced where?
text: The warm air is forced upward and as it rises it cools, expands, and loses its ability to hold moisture, creating clouds and eventually precipitation and usually more intense thunderstorms.