- Cold Type Occlusion. Cold type occlusions occur where the coldest air is found behind the occlusion. ...
- Warm Type Occlusion. Warm type occlusions occur where the coldest air is located ahead of the occlusion. ...
- Occlusion Characteristics. Temperature structure varies with each type of occlusion. ...
What is a cold occlusion?
Cold occlusions form when the cold front overtakes the warm front, lifting both the warm air behind the warm front and the cool air ahead of it. Cold occlusions are quite common over the eastern portions of continents and western ocean areas in the winter.
What is the difference between a cold front and occluded front?
Updated October 09, 2019. An occluded front is a composite of two frontal systems that merge as a result of occlusion. Cold fronts generally move faster than warm fronts. In fact, the speed of a cold front is about double that of a typical warm front. As a result, a cold front will sometimes overtake an existing warm front.
What is the difference between a warm front and cold front?
In fact, the speed of a cold front is about double that of a typical warm front. As a result, a cold front will sometimes overtake an existing warm front. Essentially, an occluded front forms as three air masses meet. There are two types of occluded fronts: Cold air occluded fronts are more common than warm occluded fronts.
What happens during a cold front?
Cold Fronts. If a cold air mass spills onto and overtakes a neighboring warm air mass, the leading edge of this cold air will be a cold front. When a cold front passes through, the weather becomes significantly colder and drier.
What happens in a warm front occlusion?
In a warm occlusion, the cold air mass overtaking the warm front is warmer than the cool air ahead of the warm front, and rides over the colder air mass while lifting the warm air.
What are the two types of occluded fronts?
There are two types of front occlusions, warm and cold, depending on the temperature contrast: In a cold occlusion, the cold air mass that overtakes the warm air mass ahead is colder than the cool air at the very front and plows under both air masses.
What is the difference between a cold front and an occluded front?
A warm air mass pushes into a colder air mass (the warm front), and then another cold air mass pushes into the warm air mass (the cold front). Because cold fronts move faster, the cold front is likely to overtake the warm front. This is known as an occluded front.
What is cold warm stationary occluded?
Two types of occlusions can form depending on the relative coldness of the air behind the cold front to the air ahead of the warm or stationary front. A cold occlusion results when the coldest air is behind the cold front and a warm occlusion results when the coldest air is ahead of the warm front.
What are warm and cold fronts?
A cold front extends to the south of the low pressure center, with a warm front to the east. Warm air is located ahead of the cold front and behind the warm front (the so-called "warm sector"), while cool air exists ahead of the warm front and cold air is present behind the cold front.
Why do cold fronts move faster?
Cold fronts move faster than warm fronts because cold air is denser, meaning there are more molecules of material in cold air than in warm air. Strong, powerful cold fronts often take over warm air that might be nearly motionless in the atmosphere.
What are the 4 types of weather?
Weather is the combination of four factors––temperature, wind, precipitation, and sunlight and clouds––that occur at a given place and time.
What warm front means?
Warm-front definition A front along which an advancing mass of warm air rises over a mass of cold air.
What does a cold front look like?
Cold fronts are depicted by blue line with triangles pointing in the direction of motion. Cold fronts demarcate the leading edge of a cold air mass displacing a warmer air mass. Phrases like "ahead of the front" and "behind of the front" refer to its motion.
What are the differences between and the symbols for warm cold occluded and stationary fronts?
1:183:08Cold Warm Occluded Stationary-Types of Weather FrontsYouTubeStart of suggested clipEnd of suggested clipThe colder these two air masses moves under and pushes up the warm air mass. Sometimes though theMoreThe colder these two air masses moves under and pushes up the warm air mass. Sometimes though the two colder air masses an occluded front has cool temperatures in large amounts of rain.
What happens when cold and warm air meet?
When a warm air mass meets a cold air mass, the warm air rises since it is lighter. At high altitude it cools, and the water vapor it contains condenses. This type of front is called a warm front. It generates nimbostratus clouds, which can result in moderate rain.
What do cold fronts mean?
A cold front is defined as the transition zone where a cold air mass is replacing a warmer air mass. Cold fronts generally move from northwest to southeast. The air behind a cold front is noticeably colder and drier than the air ahead of it.
What is an occluded front quizlet?
occluded front. An occluded front forms when a warm air mass is caught between two colder air masses. The coldest air mass then moves forward until it meets a cold air mass that is warmer and less dense. The colder of these two air masses moves under and pushes up the warmer and less dense.
What does an occluded front look like?
On a weather map, an occluded front looks like a purple line with alternating triangles and semicircles pointing in the direction that the front is moving. At an occluded front, the cold air mass from a cold front meets the cool air ahead of a warm front. The warm air in between rises as these air masses come together.
How many air fronts meet in an occluded front?
three air massesEssentially, an occluded front forms as three air masses meet.
Which symbol is occluded front?
Symbolically, an occluded front is represented by a solid line with alternating triangles and circles pointing the direction the front is moving. On colored weather maps, an occluded front is drawn with a solid purple line.
When warm and cold fronts meet, what is an occluded front?
She specializes in climate and weather. An occluded front is a composite of two frontal systems that merge as a result of occlusion. Cold fronts generally move faster than warm fronts.
What is an occluded front?
Rachelle Oblack. Updated October 09, 2019. An occluded front is a composite of two frontal systems that merge as a result of occlusion. Cold fronts generally move faster than warm fronts. In fact, the speed of a cold front is about double that of a typical warm front. As a result, a cold front will sometimes overtake an existing warm front.
What happens when warm air moves?
If warm air moves in such a way that it advances onto and replaces the cooler air in its path, the leading edge of the warm air mass found at the earth's surface (the ground) is known as a warm front. When a warm front passes through, the weather becomes noticeably warmer and more humid than it was before.
What happens when a cold front passes through?
When a cold front passes through, the weather becomes significantly colder and drier. (It isn't uncommon for air temperatures to drop 10 degrees Fahrenheit or more within an hour of a cold frontal passage.)
How do occluded fronts get their name?
Occluded fronts get their name from the fact that when the cold air pushes underneath the warm air, it lifts the warm air up from the ground, which makes it hidden, or "occluded.". Occluded fronts usually form with mature low pressure areas. They act like both warm and cold fronts.
What is cold occlusion?
Cold occlusion: very cold air (cP) behind, not so cold air (mP) ahead of, the warm front The upper warm front follows the surface occluded front.
What is the order of the warm front?
Ahead of the warm front in this order from closest to the front to furthest from the front: rain, freezing rain, sleet, snow.
What are the characteristics of a mature cyclone?
Well-developed fronts circulating about a deep low pressure center describe a mature cyclone. Chance of precipitation increases toward the storm center. Heavy precipitation stems from cumulus development in association with convergence along the cold front. Lighter precipitation is associated with stratus clouds of the warm front associated with overrunning of warm air over cooler air. May produce heavy precipitation and severe thunderstorms associated with squall lines along cold front. The system is capable of creating rain, snow, sleet, freezing rain, and/or hail. Winds, spiraling counterclockwise toward the low, change accordingly as the system, and its associated fronts, moves over particular regions. Abrupt wind shifts around fronts
What is a cool cloud?
Cool Clouds: have temperatures above 0C in the lower altitudes and subfreezing conditions in the higher altitudes. Combination of warm and cold cloud.
How many stages are there in a mid-lat cyclone?
Diagram & describe the 6 stages of a mid-lat cyclone according to Polar Front Theory.
How many types of atmospheric fronts are there?
Be able to identify (with correct symbols) the 4 main types of atmospheric fronts and the direction each front is moving based on the frontal symbols.