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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 ... For instance, an air mass originating over the desert southwest of the United ... For example, a series of fronts over the Pacific might show an air mass ... air can be shallow in the summer, and rapidly modify as it moves equatorward.

www.theweatherprediction.com/basic/airmass

In the winter this air mass is shoved toward the equator but in summer it can ... The source region for mP air is over cold ocean currents or high latitude ocean waters. ... Since mP air is always near saturation, orographic lifting of the air mass can ... Once cP air modifies significantly it no longer makes sense to label it Polar air ...

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

Source Regions are simply geographic areas where an air mass originates. ... 25 degrees of the equator; continental c - located over large land masses--dry ... We can then make combinations of the above to describe various types of air masses . ... NE Pacific, picking up some warmth and moisture from the warmer ocean.

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 ... An air mass is not only large (it can be thousands of miles across and ... It forms at low latitudes, generally within 25° of the equator. ... Those affecting the U.S. originate over the North Pacific Ocean and ... Icebergs near Greenland - Arctic ...

www.answers.com/Q/What_air_mass_forms_over_a_ocean_near_the_equator

It would be labeled "Maritime Tropical". Edit. Share to: An air mass originating in the pacific ocean near the equator would be labled? Maritime tropical. Edit.

www.nationalgeographic.org/encyclopedia/air-mass

Mar 30, 2011 ... Air masses can extend thousands of kilometers in any direction, and can reach ... Equatorial air masses develop near the Equator, and are warm. ... Indian Ocean is called a maritime tropical air mass and is warm and humid.

www.kean.edu/~csmart/Observing/09.%20Weather%20sytems.pdf

to the equator (Fig. 7). Continental ... Atlantic and Pacific Oceans and are characterized by cool, moist air that ... The initial characteristics of air masses will inevitably change as the mass ..... tornadoes are near-circular low-pressure systems. However, .... Unlike mid-latitude cyclones, hurricanes do not originate as a result of ...

www.tulane.edu/~sanelson/New_Orleans_and_Hurricanes/tropical_cyclones.htm

Aug 19, 2014 ... If you look along the initial direction of motion the mass will be deflected ... The rising moist air at the equator creates a series of low pressure zones along the equator. ... Near the equator, where the trade winds converge, is the .... 15% of all tropical cyclones develop in the eastern Pacific Ocean, 30% ...

www.shsu.edu/~dl_www/bkonline/131online/13102match/OnLineState2.htm

The divergence near the ground that is associated with the subtropical high pressure ... The cP air mass in North America originates in Siberia ..... An air mass from the Gulf of Mexico that moves northward over the U.S. in winter would be labeled mTw ... The northern Pacific Ocean area in North America is most likely to be a ...