Assertion: cold front's air | /r/HasProperty | lifted
Facets:
value: from the surface
type: LOCATION
value: upward
type: MANNER
Source sentences:
text: Convective precipitation (showers, thundershowers, and related unstable weather) is caused by air being lifted and condensing into clouds by the movement of the cold front or cold occlusion under a mass of warmer, moist air.
text: Because air is lifted instead of being pressed down, the movement of a cold front through a warm front is usually called a low-pressure system.
text: The warm air is then lifted from the surface, and therefore hidden.
text: As the warm air is lifted, the temperature drops and condensation occurs.
text: As the warm air is lifted, it cool and
text: The lighter warm moist air behind the front is lifted upward and "overrides" the colder air.
text: Where the two fronts meet, warm air is lifted from the surface and an occlusion is formed.