occluded front is the type of front that has cold air moving into warm air.
occluded front is the type of front that has cold air moving into warm air.
what type of front has cold air moving into warm air?
occluded front
a surface low can form in a variety of ways. topography can create a surface low. mesoscale convective systems can spawn surface lows that are initially warm core. the disturbance can grow into a wave-like formation along the front and the low is positioned at the crest. around the low, the flow becomes cyclonic. this rotational flow moves polar air towards the equator on the west side of the low, while warm air move towards the pole on the east side. a cold front appears on the west side, while a warm front forms on the east side. usually, the cold front moves at a quicker pace than the warm front and "catches up" with it due to the slow erosion of higher density air mass out ahead of the cyclone. in addition, the higher density air mass sweeping in behind the cyclone strengthens the higher pressure, denser cold air mass. the cold front over takes the warm front, and reduces the length of the warm front. at this point an occluded front forms where the warm air mass is pushed upwards into a trough of warm air aloft, which is also known as a trowal.
cyclone
a cold front is located at the leading edge of the temperature drop off, which in an isotherm analysis shows up as the leading edge of the isotherm gradient, and it normally lies within a sharp surface trough. cold fronts often bring heavy thunderstorms, rain, and hail. cold fronts can produce sharper changes in weather and move up to twice as quickly as warm fronts, since cold air is denser than warm air and rapidly replaces the warm air preceding the boundary. on weather maps, the surface position of the cold front is marked with the symbol of a blue line of triangle-shaped pips pointing in the direction of travel, and it is placed at the leading edge of the cooler air mass. cold fronts come in association with a low-pressure area. the concept of colder, dense air "wedging" under the less dense warmer air is often used to depict how air is lifted along a frontal boundary. the cold air wedging underneath warmer air creates the strongest winds just above the ground surface, a phenomenon often associated with property-damaging wind gusts. this lift would then form a narrow line of showers and thunderstorms if enough moisture were present. however, this concept isn't an accurate description of the physical processes; upward motion is not produced because of warm air "ramping up" cold, dense air, rather, frontogenetical circulation is behind the upward forcing.
weather front