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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 ... Polar air over the ocean (maritime) loses its stability as it gains moisture over ...

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

These air masses form north of (or very near) the Arctic Circle and poleward. ... The source region for these air masses are the northern Pacific and the ... Along the northeastern part of the United States, maritime polar air can enter the United ... Continental Tropical : These are the hot, dry air masses which originate over ...

www.nhc.noaa.gov/marine/docs/USA_Glossary.pdf

discontinuity ahead of a cooler/drier air mass. ... The dryline does not have to be the ... north of the Equator west of the International Dateline. Labeled as TYPH, HURCN, or ... focus for tropical cyclogenesis in the northwest Pacific ocean, and ... A second type of subtropical cyclone is a mesoscale low originating in or near a.

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

Aug 19, 2014 ... If the Earth were not rotating, this would result in a convection cell, with warm ... Near the equator, where the trade winds converge, is the ... In general, the surface along which a cold air mass meets a warm air mass is called a front. .... 15% of all tropical cyclones develop in the eastern Pacific Ocean, 30% ...

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

to the equator (Fig. 7). ... Meteorologists use a form of scientific shorthand to label the ... Atlantic and Pacific Oceans and are characterized by cool, ... The initial characteristics of air masses will inevitably change .... Cyclones develop from a waveform that originates where .... tornadoes are near-circular low-pressure systems.

www.answers.com/Q/What_type_of_air_mass_forms_near_the_equator

An air mass originating from the pacific ocean near the equator would be labeled ? This is a maritime polar air mass<<<WRONG!!! IT IS A MARITIME TROPICAL ...

scied.ucar.edu/shortcontent/air-masses

Air masses that form near the equator or in the tropics (equatorial or tropical air ... polar air mass moves into warmer areas and over the ocean the air will warm ...