What is CP in earth science?

What is CP in earth science?

Continental Polar

What are the 4 types of air masses?

Meteorologists identify air masses according to where they form over the Earth. There are four categories for air masses: arctic, tropical, polar and equatorial. Arctic air masses form in the Arctic region and are very cold. Tropical air masses form in low-latitude areas and are moderately warm.

Which is the coldest air mass?

Arctic air masses

What are the 5 air masses?

Five air masses affect the United States during the course of a typical year: continental polar, continental arctic, continental tropical, maritime polar, and maritime tropical. Continental air masses are characterized by dry air near the surface while maritime air masses are moist.

Why is the US not a good place for air masses?

Why is the United States not a great place for air masses to form? “continental arctic” air mass designated by ‘cA’, which source is over the poles and therefore very cold and dry.

Which air mass is the coldest and driest?


Where do air masses come from?

An air mass forms whenever the atmosphere remains in contact with a large, relatively uniform land or sea surface for a time sufficiently long to acquire the temperature and moisture properties of that surface. The Earth’s major air masses originate in polar or subtropical latitudes.

What are the 2 major causes for moving air masses in North America?

One major influence of air mass movement is the upper level winds such as the upper level winds associated with the jet stream. The jet stream wind is often referred to as a steering wind. The troughs and ridges of the jet stream will help transport cold air toward lower latitudes and warm air toward high latitudes.

What type of air mass is cold and humid?

Type 4: Water, Water Everywhere It is also considered a secondary category and is abbreviated “m.” Therefore, a humid, cold mass that develops over polar oceans is categorized as “mP.” This type of air mass impacts the U.S. west coast in winter.

Who discovered the concept of air mass?

Lamb introduced a classification of weather types in 1950. This was predominantly an idea that was based on seven airflow types, and the direction that they came from. Lamb eventually decided on seven types; Northerly, North westerly, Westerly, Southerly, Easterly, Cyclonic and Anticyclonic.

Why do air masses move?

Winds and air currents cause air masses to move. Moving air masses cause changes in the weather. A front forms at the boundary between two air masses. Types of fronts include cold, warm, occluded, and stationary fronts.

What are the 4 weather fronts?

There are four different types of weather fronts: cold fronts, warm fronts, stationary fronts, and occluded fronts.

  • Cold Front. A side view of a cold front (A, top) and how it is represented on a weather map (B, bottom).
  • Warm Front.
  • Stationary Front.
  • Occluded Front.

Is Arctic air high or low pressure?

Cool, moist maritime polar (mP) air, on the other hand, forms over the colder subpolar ocean waters just south and east of the large, winter oceanic low-pressure regions. Over the continents, cold dry continental polar (cP) air and extremely cold dry continental arctic (cA) air forms in the high-pressure…

Why is the polar vortex so dangerous?

Portions of Europe and Asia also experience cold surges connected to the polar vortex. By itself, the only danger to humans is the magnitude of how cold temperatures will get when the polar vortex expands, sending Arctic air southward into areas that are not typically that cold.

How long is the polar vortex supposed to last?

Those individual vortices can persist for more than a month. Volcanic eruptions in the tropics can lead to a stronger polar vortex during winter for as long as two years afterwards. The strength and position of the polar vortex shapes the flow pattern in a broad area about it.


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