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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 ...

scied.ucar.edu/shortcontent/air-masses

The air masses in and around North America include the continental arctic (cA), maritime ... Air masses that form over the ocean, called maritime air masses, are more humid than ... The second part of the name describes the temperature of the air mass, which depends on the latitude where it formed. ... >The Water Cycle.

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.

cimss.ssec.wisc.edu/wxwise/class/frntmass.html

Heating of the lower atmosphere by energy transfer from the surface. ... 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 latitudes T ...

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 ... Tropical (T) air masses form in low latitudes and are warm. ... Continental polar (cP) and maritime tropical (mT) air masses influence the weather of North America most, especially east of ...

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.

en.wikibooks.org/wiki/High_School_Earth_Science/Changing_Weather

Instead, air masses move across them, making the middle latitudes the site of very ... As you might expect, air masses that form over oceans contain more water .... The cold air mass is likely to have formed in the frigid arctic. When the temperature gradient across a cold front is low, a cold front has little effect on the weather.

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

Aug 21, 2017 ... 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.

earthobservatory.nasa.gov/Features/Hurricanes

Hurricanes form over tropical waters (between 8 and 20 degrees latitude) in ... of a hurricane is the convergence of air along the boundary between masses of warm and cold air. ... As the air rises, it cools, and water vapor condenses into clouds. ... The lower the surface pressure, the more rapidly air flows into the storm at ...