orographic lifting - Ascending air flow caused by mountains. Mechanisms that produce the lifting fall into two broad categories: 1) the upward deflection of horizontal larger-scale flow by the orography acting as an obstacle or barrier; or 2) the ...
Orographic Lift - Lifting of air caused by its passage up and over mountains or other sloping terrain.
Orphan Anvil - [Slang], an anvil from a dissipated thunderstorm, below which no other clouds remain.
OROGRAPHIC LIFTING
Where the flow of air is forced up and over barriers such as highlands or mountains. Moist air being forced aloft begins to cool, consequently condensation forms, and rain or snow begins to fall.
Orographic Lifting
Same as Upslope Flow; occurs when air is forced to rise and cool due to terrain features such as hills or mountains. If the cooling is sufficient, water vapor condenses into clouds. Additional cooling results in rain or snow.
Orographic lifting The forced rising of air up the slopes of a hill or mountain.
Outgassing Release of gasses to the atmosphere from hot, molten rock during volcanic activity; thought to be the origin of most atmospheric gases.
Orographic Lift- The lifting of air as it passes over terrain features such hills or mountains. This can create orographic clouds and/or precipitation.
Orphan Anvil- An anvil from a dissipated thunderstorm, below which no other clouds remain.
Orographic Lifting- The upward flowing of air caused by rising terrain, such as a mountain range.
Overrunning- The flow of warm air over cold air in advance of a warm front.
**Orographic Lifting**
Forced aloft the rising air cools by expansion and clouds result as we often see along the Blue Mountains north of the Lehigh Valley.
orographic cloud"Mountain clouds produced by orographic lifting of moist air to saturation.
UPRUpperUpslope FlowSame as Orographic Lifting; air that flows toward higher terrain, and hence is forced to rise.
stable and unstable atmospheric conditions: If a parcel of air is moved upward due to local convergence, convection, orographic lifting, ...
Upslope fog forms when winds blow air up a slope (called orographic lift), adiabatical cooling it as it rises, and causing the moisture in it to condense.
OROGRAPHIC - Effects of mountains or high terrain on the weather. Orographic lift can result from a wind blowing against a mountain ridge forcing it upwards. This can take relatively stable air and force in aloft causing convective clouds.
orographic—Of, pertaining to, or caused by mountains as in orographic clouds, orographic lift, or orographic precipitation.
Large Cumulonimbus (Cb) clouds are produced with these processes; each cell lasting at least half-an-hour, and depending upon external forcing agents (e.g. coastal convergence, synoptic troughs, orographic lifting), ...
 See also: Orographic, Surface, Air, Lifting, Cloud
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