a sloping surface in the atmosphere, separating air masses of differing temperature and/or density.
A major discontinuity separating ocean currents and water masses in any combination.
Transition zone between air masses with different weather characteristics.
The line of separation at the earth's surface between cold and warm air masses.
The boundary between air masses having different characteristics.
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.
In other regions along the front, warm air of lower density moves polewards, sliding over its sloping surface. This portion is called a warm front. Warm tropical air replaces cold polar 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.
A front is the area of contact between air masses.
(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.
The boundary where different air masses meet.
Fronts are boundaries between masses of warm and cold air in a depression.
surface of contact between two unlike air masses
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"
a body to mobilise the masses, not a vehicle for campaigning on political issues
a boundary between air masses of differing temperatures and sometimes moisture content
a boundary between contrasting masses of air, a boundary between opposing centers of high pressure, a zone of convergence and found in a trough of lower pressure
a boundary where air masses with sharply contrasting temperature and humidity meet
an area where two air masses of different temperature and humidity meet
a narrow zone of fog between a cyclone and an anticyclone
a narrow zone of transition between air masses that differ in temperature only
a narrow zone of transition, usually between a mass of cold air and a mass of warm air
a parcel of advancing air
a place where bodies of air, called air masses, which have different temperature and moisture (humidity) conditions meet
a transition zone separating two air masses
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.
A zone separating air masses of differing properties.
Area were two different air masses meet
The transition zone between two distinct air masses. The basic frontal types are cold fronts, warm fronts, occluded fronts, and stationary fronts.
A boundary separating air masses. One air mass is often warmer and higher in moisture content than the other.
the boundary or transition zone of two air masses; if cold air advances and replaces warmer air the front is a cold front, and if warm air advances and replaces cooler air the front is a warm front.
The boundary between two masses of air with different temperatures (ie: a mass of cold air and a mass of warm air)
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 transition zone between two distinct air masses Types of fronts include: Cold, Warm, Stationary and Occluded.
The area where two air masses come together.
The first part of an advancing mass of cold or warm air.
The place where a mass of warm air meets a mass of cold air, usually causing a change in weather.
The transition zone between two different air masses.
The boundary between two air masses of different temperature and density.
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.
boundary between air masses of different temperature and pressure. short for Gravity. Refers to loading experienced by pilot and aircraft in flight. G-loading increases during sharp maneuvers.
The boundary between two different air masses, ie. cold front, warm front, stationary front.
an area in the atmosphere where cold and warm air systems meet
region where a sharp gradient in temperature occurs, often indicating the demarcation between two current systems or water masses; usually associated with intense biological activity.
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 boundary or transition zone between two dissimilar air masses
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.
The transition zone between two distinct airmasses. The basic frontal types are cold fronts, warm fronts and occluded fronts.
A front is the boundary between two different air masses. 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.
The boundary between two air masses with different temperatures and densities. See cold front, warm front.
The boundary between two distinct air masses. The basic types are cold, warm, stationary, and occluded fronts.
The boundary between two air masses. If cold air is advancing on warm air, the front is called a cold front; if warm air is advancing on cold air, the front is designated a warm front.
The boundary between air masses of different densities.
A discontinuity between air masses.
is a weather term for the leading edge of an air mass
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.
A Front is a boundary between two air masses of different characteristics. Many shipping bulletins may simply called a front a trough.
Boundary of two overlapping air masses. When cold air is advancing on warm air, it is said to be a cold front; warm air advancing on cooler air is a warm front.
The surface between two different air masses.
A transition zone between two air masses of different densities.
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