In general, cold air masses tend to flow toward the equator and warm air masses tend to flow toward the poles. This brings heat to cold areas and cools down areas that are warm.

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Warm air masses tend to flow only towards the North Pole. Cold air masses tend to flow towards the equator.

Cold air masses tend to move toward the equator. Warm air masses tend to move toward the poles. The Coriolis effect causes them to move on a diagonal. Many air masses move toward the northeast over the U.S. This is the same direction that global winds blow.

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Tropical air masses, designated by the letter ‘T’, are warm/hot as they originate over the lower latitudes of both land and sea.

If an air mass forms over land in the far north it is called continental polar.

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Maritime air masses form over oceans and are humid. Warm, humid air masses form over oceans near the tropics. Maritime tropical air masses that form over the gulf of Mexico and the Atlantic Ocean move first into the southeastern United States. Maritime polar air masses affect the west coast more than the East coast.

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On the other hand, when a cold air mass catches up with a warm air mass, the cold air slides under the warm air and pushes it upward. As it rises, the warm air cools rapidly. This configuration, called a cold front, gives rise to cumulonimbus clouds, often associated with heavy precipitation and storms.

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Air masses are formed when air stagnates for long periods of time over a uniform surface. The characteristic temperature and moisture of air masses are determined by the surface over which they form. An air mass acquires these attributes through heat and moisture exchanges with the surface.

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Warm fronts usually move from southwest to northeast and the air behind a warm front is warmer and moister than the air ahead of it. When a warm front passes, the air becomes noticeably warmer and more humid than it was before.

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Once an air mass is formed, it is moved by global winds. In the United States, global winds such as the PREVAILING WESTERLIES, tend to move air masses from WEST to EAST!

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The reason that they most often move from west to east is due to the jet stream. The jet stream is a narrow band of fast, flowing air currents located near the altitude of the tropopause that flow from west to east. The jet stream flows around the entire earth. They usually have a meandering, snake-like shape.

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Maritime air masses form over water and are humid. Continental air masses form over land and are dry. Therefore, an air mass that develops over northern Canada is called a continental polar air mass and is cold and dry. One that forms over the Indian Ocean is called a maritime tropical air mass and is warm and humid.

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The most powerful force which causes air to rise and cool is the Sun. When the Sun heats the surface of the Earth, warming of the air above the ground takes place. This warm air rises and cools as it goes higher.

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Air masses are slowly pushed along by high-level winds, when an air mass moves over a new region, it shares its temperature and humidity with that region. So the temperature and humidity of a particular location depends partly on the characteristics of the air mass that sits over it.

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Tropical (T): Tropical air is warm to hot. It forms at low latitudes, generally within 25 degrees of the equator. Equatorial (E): Equatorial air is hot and originates along 0 degrees (the equator). Since the equator is mostly devoid of land areas, there is no such thing as continental equatorial air”only mE air exists.

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When air heats up and expands, its density also decreases. The warmer, less dense air effectively floats on top of the colder, denser air below it. This creates a buoyant force that causes the warmer air to rise.

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Warm Front Warm fronts often bring stormy weather as the warm air mass at the surface rises above the cool air mass, making clouds and storms.

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In the winter, cold, dry air masses tend to dominate the central and eastern United States as cold winds blow from the northwestern Canadian prairies. In summer, the warm southern winds blow moist, hot air into the eastern and central US, leading to days of high humidity and sultry conditions.

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An air mass has roughly the same temperature and humidity. Air masses form over regions where the air is stable for a long enough time. The air takes on the characteristics of the region. Air masses move when they are pushed by high level winds.

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How is warm front formation different from occluded front formation? A: A warm air mass rises above a cold air mass during a warm front, but two cold air masses surround a warm air mass during an occluded front.

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The air exchange between inside and outside air is driven by two forces. One is commonly known as the chimney effect or the stack effect. As hot air rises, it moves outside to the top of your home, and the colder outside air is drawn in from the bottom through gaps, leaks, and windows, etc.

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When a cold air mass moves into a region occupied by a warm air mass, the contact zone is called. ” A cold front.

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Show activity on this post. Cold air flows downward according to hot air because it is more dense and sinks while hot air rises. Show activity on this post. In hot room the air will be much thinner thus reducing the pressure so the air flows from cold room to hot rooms.

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Which one is correct? Explanation 1: Cold air is more denser than hot air because ,when cold air of some density, say ‘d’ is heated, the molecules/atoms move apart from each other and so the volume expands. As mass of the air hasn’t changes and the volume has increased, hot air is less denser than cold air.

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As the molecules heat and move faster, they are moving apart. So air, like most other substances, expands when heated and contracts when cooled. Because there is more space between the molecules, the air is less dense than the surrounding matter and the hot air floats upward.