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en.wikipedia.org/wiki/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 the surface below them. They are classified according to latitude and their continental or maritime ... Polar air masses develop over higher latitudes over the land or ocean, are ...

en.wikipedia.org/wiki/Cyclone

In meteorology, a cyclone is a large scale air mass that rotates around a strong center of low ... Mesocyclones form as warm core cyclones over land, and can lead to tornado .... In addition, the higher density air mass sweeping in behind the cyclone .... This means that subtropical cyclones are more likely to form outside the ...

www.nationalgeographic.org/encyclopedia/air-mass

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 ...

en.wikibooks.org/wiki/High_School_Earth_Science/Changing_Weather

An air mass is created above an area of land or water known as its source ... Instead, air masses move across them, making the middle latitudes the site of ... As you might expect, air masses that form over oceans contain more water .... As the front passes over you, the temperature and dew point rise and the rain likely ends.

scied.ucar.edu/shortcontent/air-masses

Air is not the same everywhere. In North America, for example, cold and dry air covering thousands of miles flows south from the Arctic, especially in winter, and  ...

www.shsu.edu/~dl_www/bkonline/131online/f08airmass/08mctfquiz.htm

A region dominated by cyclones is more likely to produce an air mass than a region ... it would most likely be more characteristic of a midlatitude maritime air mass than a continental air mass ... 018. Continental air masses tend to form over land and bring weather that is cool and wet ... Relatively cold and the humidity high.

www.thoughtco.com/types-of-north-american-air-masses-3443886

Dec 2, 2016 ... Learn more about these air mass types and where they come from (source regions). ... Depending on whether an air mass forms over an ocean or a land surface it is ... Maritime polar air forms over oceans at high latitudes.

www.srh.noaa.gov/jetstream/synoptic/airmass.html

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".

www.theweatherprediction.com/basic/airmass

The maritime tropical air mass is most often felt in the Southeast US. ... As the maritime tropical airmass moves over land it begins to "pick up" characteristics ... The source region for mP air is over cold ocean currents or high latitude ocean waters. ... above the dryline, severe thunderstorms can form near a dryline boundary.

snowball.millersville.edu/~adecaria/ESCI241/esci241_lesson15_airmasses.pdf

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.