what do you no about Air Mass please do tell?

Question

I need some hard facts what ever you know would help alot thhank you and have a nice day.

Answer 1

Air mass is a broad topic.
It is effected by temperature, pressure, gases, and other elements in the air.

AIR MASS
An extensive body of air throughout which the horizontal temperature and moisture characteristics are similar.
http://www.weather.com/glossary/a.html

The air mass terms refer to the fact that air masses acquire the properties of the terrain over which they move. Cold arctic air masses are most common in the arctic regions and maritime air masses generally form over water. Air masses do move however, and a maritime air mass that moves over land will slowly lose its moisture and eventually become continental, just as a tropical air mass that moves north will cool and become polar, or even arctic. Air masses can not be defined by perfect lines or borders, however there is a very small region of interaction of two or more air masses where contact occurs. This region is called a weather front; visible and significant weather changes will occur there. Air masses do not mix, rather they move and displace each other. The associated fronts also move, thus causing weather changes for the terrain below. Fronts are always named for the air mass that is advancing. Thus a cold front would occur where a cooler air mass is displacing a warmer one.

Air masses are not to be confused with small scale events like microbursts, they move much quicker. Though these smaller events do involve masses of air, the term air mass is reserved for weather systems that span large areas.