Definition - What does Air Mass mean?
An Air Mass is a large volume of air with the same pressure and temperature. This body of air can extend to hundreds or thousands of miles horizontally as high as the stratosphere, maintaining the uniform conditions of humidity and temperature at a given level. When it reaches to a new place with a different air mass, it may lead to a destructive storm. An Air Mass is of two types – maritime when created on water and continental when created on land or dry conditions.
Petropedia explains Air Mass
An Air Mass can extend up to thousands of miles across the earth's surface; it can also reach the stratosphere from the ground level. Due to its low wind speed, an Air Mass can remain stable at one place and take the features of that place like cold or heat. When the wind starts to blow, the Air Mass travels with it and carries the features of one place to another. If it converges with other air masses that have different temperature and pressure conditions, it results in severe storms. The air masses can affect the production of oil and gas at offshore rigs if they lead to a destructive storm.