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Air mass


In meteorology, an air mass is a volume of air defined by its temperature and water vapor content. Air masses cover many hundreds or thousands of square miles, and adapt to the characteristics of th...

air mass - National Geographic Society


Mar 30, 2011 ... Polar air masses take shape in high-latitude regions and are cold. Equatorial ... Continental air masses form over land and are dry. Therefore ...

This air mass is characterized by - Atmospheric Sciences - Texas ...


Continental Polar air masses form over Canada and Siberia. ... clouds and precipitation as they move inland and are forced upward by the rising land. ... States from the northeast when a low pressure mid- latitude cyclone is located south of the area. ... The air is often unstable due to its warmth and high moisture content.

Air Masses and Fronts - cimss


The longer the air mass stays over its source region, the more likely it will acquire ... polar latitudes P - located poleward of 60 degrees north and south; tropical ... continental c - located over large land masses--dry; marine m - located over the ... decrease Steady Cooling Dew Point high; remains steady Steady Decreases ...

Fronts | Climate Education Modules for K-12


Aug 9, 2013 ... A front describes the boundary between two air masses containing different ... The air masses can have large temperature contrasts over a short ... are relatively warm, rain will be the likely precipitation form. ... The cold air mass pushes under the warm air mass because of its higher ... Want to learn more?

Weather Facts: Air masses and their sources | weatheronline.co.uk


Six basic types of air masses affect the weather of the British Isles. ... The most severe weather usually occurs when dry-cold continental polar air ... Continental polar (cP): Cold and dry, originating from high latitudes, typically as ... and Asian land masses and is modified as it moves out over the Atlantic and Pacific Oceans.

High School Earth Science/Changing Weather - Wikibooks, open ...


As you might expect, air masses that form over oceans contain more water vapor than those that form over land. The second symbol tells the general latitude ...

NWS JetStream - Air Masses


The longer the air mass stays over its source region, the more likely it will acquire the ... as Arctic air masses as they originate over the higher latitudes of both land and sea. ... Where air masses converge, they form boundaries called "fronts".

Summary - Pearson


Continental (c) designates an air mass of land origin, with the air likely to be dry; whereas a maritime ... Polar (P) air masses originate in high latitudes and are cold. Tropical (T) air masses form in low latitudes and are warm. ... Maritime tropical air is the source of much, if not most, of the precipitation received in the easter...

Air Masses And Fronts - Dutton e-Education Institute Courseware


A dry, cold air mass from northern Canada meets a warm, humid air mass ... Of course, summer mT air masses are the most stifling, particularly in the ... a continental-Polar air mass (designated cP for short) forms over cold land. ... Maritime-Polar air masses (mP), whose source regions are typically high-latitude bodies of ...

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Air Masses | UCAR Center for Science Education


... Earth Observing Lab · High Altitude Observatory · Mesoscale & Microscale ... Air masses that form over the ocean, called maritime air masses, are more humid than ... the temperature of the air mass, which depends on the latitude where it formed. ... If an air mass forms over land in the far north it is called conti...

AIR MASS CLASSIFICATION - Weather Prediction Education


As the maritime tropical airmass moves over land it begins to "pick up" ... The source region for mP air is over cold ocean currents or high latitude ocean waters . ... Precipitation is most common on the "edges" of cP air, especially where it intersects ... above the dryline, severe thunderstorms can form near a dryl...

ESCI 241 – Meteorology Lesson 15 – Air Masses and Fronts Dr ...


In order to form, and air mass must remain in its source region for a week or more . ○ Source ... Air masses are associated with anticyclones (areas of high pressure). ○ The major ... Air masses are classified according to the latitude of their source region, and ... Air masses formed over land are called continental air masses.