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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 ... The Bergeron classification is the most widely accepted form of air mass ...

wps.prenhall.com/esm_tarbuck_escience_11/32/8326/2131640.cw/content/index.html

Continental (c) designates an air mass of land origin, with the air likely to be dry; whereas a maritime (m) air mass originates over water, and therefore will be humid. ... 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 ...

www.nationalgeographic.org/encyclopedia/air-mass

Mar 30, 2011 ... Tropical air masses form in low-latitude areas and are moderately warm. Polar air ... Maritime air masses form over water and are humid.

www.met.tamu.edu/class/atmo202/Dir-surface/surface-stu.html

The air mass is more shallow than the continental Polar air mass. ... Continental Polar air masses form over Canada and Siberia. ... air can enter the United States from the northeast when a low pressure mid- latitude ... from a source region in the Tropics and over water, this air mass is characterized by hot, humid conditions.

en.wikibooks.org/wiki/High_School_Earth_Science/Changing_Weather

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 .... When the temperature gradient across a cold front is low, a cold front has ... As the front passes over you, the temperature and dew point rise and the rain likely ends.

www.tvcc.cc/media/documents/cbwcl/pms_425_fire_wx_ch_08.pdf

Air masses that form over a source region ... High-latitude continental source regions are much colder and .... Southwestern Canada have had a longer overwater ... or more. Low stratus clouds and fog are produced, making these valleys some of the foggiest places on .... Heating and lifting of the air are likely to produce.

www.theweatherprediction.com/basic/airmass

The maritime tropical air mass is most often felt in the Southeast US. ... The warm waters in this region evaporate an enormous volume of water. ... The source region for mP air is over cold ocean currents or high latitude ocean waters. ... high pressure and a trough aloft, especially when cP air moves into lower latitudes.

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 ... Maritime (m): Maritime air forms over oceans and other bodies of water and is humid. ... It forms at low latitudes, generally within 25° of the equator.

scied.ucar.edu/shortcontent/air-masses

Air masses that form over the ocean, called maritime air masses, are more ... the temperature of the air mass, which depends on the latitude where it formed.

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 ... Air masses are classified according to the latitude of their source region, and ... Air masses formed over water are called maritime air masses. .... О Most warm fronts are between cP and mT air masses, or sometimes ... О A low pressure trough.