In some regions along the polar front, cold dense air advances equatorwards, causing warm air to be forced aloft over its sloping surface. This portion of the polar front is known as a cold front. Cold polar air is replacing warm tropical air.
When the cold front moves faster than the warm front, and as it overtakes the warm front, the warm sector is closed and a combine front forms. This process is called occlusion. The front formed in this way is called an occluded front.
(Meteorology) A boundary or transition zone between two air masses of different density, and thus (usually) of different temperature. A moving front is named according to the advancing air mass, so a cold front is the leading edge of an advancing cold air mass, while a warm front is the trailing edge of a retreatinq cold air mass.
a group of people with a common ideology who try together to achieve certain general goals; "he was a charter member of the movement"; "politicians have to respect a mass movement"; "he led the national liberation front"
the boundary between a warm and cold air mass. If the cold air is moving in to replace the warm air, the front is called a cold front. If the warm air mass is moving in to replace the cold air, the front is called a warm front.
The line that separates warm and cold fronts. Fronts are mostly accompanied by clouds usually thick enough to produce (heavy) precipitation. Behind a warm front warmer air is advected (at height), behind a cold front colder air is advected (at height). On a weather map a warm front is marked as a red line or as a black line with semicircles, a cold front as a blue line or a black line with wedges.
The boundary between two differing air masses. Cold fronts separate an advancing cold air mass from a retreating warm air mass. Warm fronts separate an advancing warm air mass from a retreating cold air mass. Stationary fronts separate air masses that are not moving relative to each other.
A transition zone between two differing air masses. Basic frontal types are (1) COLD FRONT where cooler air advances replacing warmer air; (2) WARM FRONT- warmer air advances replacing cooler air; (3) STATIONARY FRONT- warmer air meeting cooler air with neither air mass moving appreciably. Thunderstorms can form in association with any of these fronts. However, fronts are not necessary for thunderstorm development.
A boundary between two different air masses. The difference between two air masses sometimes is unnoticeable. But when the colliding air masses have very different temperatures and amounts of water in them, turbulent weather can erupt. A cold front occurs when a cold air mass moves into an area occupied by a warmer air mass. Moving at an average speed of about 20 mph, the heavier cold air moves in a wedge shape along the ground. Cold fronts bring lower temperatures and can create narrow bands of violent thunderstorms. In North America, cold fronts form on the eastern edges of high pressure systems. A warm front occurs when a warm air mass moves into an area occupied by a colder air mass. The warm air is lighter, so it flows up the slope of the cold air below it. Warm fronts usually form on the eastern sides of low pressure systems, create wide areas of clouds and rain, and move at an average speed of 15 mph. When a cold front follows and then overtakes a warm front (warm fronts move more slowly than cold fronts) lifting the warm air off the ground, an occluded front forms.
The boundry of two air masses. Generally considered warm fronts and cold fronts, but includes many others - occluded, upper, surface, and stationary to name a few. A cold front is the leading edge of a cold air mass that is displacing warmer air in its path. A warm front, conversely, is the leading edge of a warm air mass that is displacing a retreating colder air mass.
A boundary or transition zone between two air masses of different density, and thus (usually) of different temperature. A moving front is named according to the advancing air mass, e.g., cold front if colder air is advancing.
A narrow transition zone, or boundary, between disparate synoptic scale air masses whose primary discontinuity is density. Fronts are commonly associated with a moisture gradient, a pressure trough, a wind shift and/or various sensible weather phenomena. A front is a convergent boundary. It is synoptic scale along the length of the front, but mesoscale across the front itself.
The transition zone or interface between two air masses of different densities, which usually means different temperatures. For example, the area of convergence between warm, moist air and cool, dry air. Related terms: cold front and warm front
The part or surface of anything which seems to look out, or to be directed forward; the fore or forward part; the foremost rank; the van; -- the opposite to back or rear; as, the front of a house; the front of an army.
A military front or battlefront is a contested armed frontier between opposing forces. This can be a local or tactical front, or it can range to a theater. A typical front was the Western Front which was along the French-German border in World War I.
A Front (Ñ„Ñ€Ð¾Ð½Ñ‚) was a major military organization in the Soviet Army, roughly equivalent to an army or army group in British or American military terminology. This is not to be confused with the more general usage of military front, describing a geographic area in wartime.
The front of a cover with most or all of the back and side panels torn away or removed. Fronts, while desirable if they bear unusual or uncommon postal markings, are less desirable than an intact cover.
Front is a comune (municipality) in the Province of Turin in the Italian region Piedmont, located about 25 km north of Turin. As of 31 December 2004, it had a population of 1,661 and an area of 10.6 km2.All demographics and other statistics: Italian statistical institute Istat.
Wheel Drive (FWD) The front wheels receive engine power. FWD provides more traction than rear-wheel drive (RWD) in poor road conditions because more weight is over the drive wheels. FWD also allows better use of interior space than RWD because all drivetrain components are concentrated in the front of the car.
The middle of the upper part of the tongue, -- the part of the tongue which is more or less raised toward the palate in the pronunciation of certain sounds, as the vowel i in machine, e in bed, and consonant y in you. See Guide to Pronunciation, §10.
The half of the GG1 that contained the steam boiler was designated the "front" or end #1 the other half was designated end #2. Most GG1's had an "F" on the carboby to indicate the front end. Messenger Wire - The graceful shaped wire that carries the trolley wire.
an organisation in which one or more organisations dissolve all or part of their resources in order to achieve a broader unity than is possible within their own, usually formal organisational structure