air mass

Over one million people attended an open air mass in the park at the time.

A moving front is named according to the advancing air mass.

Air masses can be modified in a variety of ways.

This could be partly due to two air masses coming together.

"What if you had huge air masses to work with?

It was here, apparently, that he hit his first unstable air mass.

A hot air mass bumps up against a cooler one.

It is a stationary front as the air masses are not moving against each other.

They are an important barrier to the movements of air masses.

A polar air mass brought cold weather to the region yesterday.

This is due to density differences between the two air masses.

"There's no human being responsible for this tropical air mass that passed over Chicago."

The air mass then slowly moderates as it moves south into the rest of the state.

The winter months can bring bitterly cold air masses from Canada.

They are most likely to be found along frontal boundaries of an air mass during the spring months.

A warm, moist air mass covered most of the southeast.

Tomorrow night, another cold air mass is expected, keeping the temperature in the mid-20's on Wednesday.

At 100 percent relative humidity, an air mass can hold no more water vapor.

Superior air masses are dry, and rarely reach the ground.

Or did he sense the infinitesimal change in pressure as an air mass moved toward his left ear?

These air masses enter the country in different ways thanks to its varied geography.

If the air mass is cold enough, the precipitation falls the form in heavy snow.

However, the cold air mass, an unusually strong one, lowered temperatures across the region.

Water from the Tethys would evaporate into the air mass.

Each air mass type brings in different temperature and moisture properties.