Which type of air mass is associated with the warm?
Tropical
Tropical, or warm air masses form in the tropics and have low air pressure.
What do you call an air mass that is dry and warm?
Continental tropical (cT): dry, warm air mass.
Which air mass is the driest?
cA air masses
cA air masses are the coldest of the cold and the driest of the dry. Cold and dry cA air masses originate over the frozen hinterlands of Siberia and northern Canada, and to see just how cold and dry they can be in the winter, check out the 18Z surface analysis for December 3, 2002.
What is the hottest type of air mass?
Tropical (T): Tropical air is warm to hot. It forms at low latitudes, generally within 25 degrees of the equator. Equatorial (E): Equatorial air is hot and originates along 0 degrees (the equator). Since the equator is mostly devoid of land areas, there is no such thing as continental equatorial air—only mE air exists.
What are the characteristics of the air masses?
The characteristics of the kind of weather that occurs on the border between air masses depend on the type of weather front present. Weather fronts vary from the more familiar cold and warm fronts to the less familiar stationary and occluded fronts.
Are there different types of air masses in North America?
It rarely affects the U.S. From these categories come the five combinations of air mass types that influence our U.S. and North American weather. Continental polar air is cold, dry, and stable. It forms over the snow-covered interiors of Canada and Alaska.
Where do continental tropical air masses come from?
Continental tropical air masses are hot and dry. Their air is carried from Mexico and the southwestern U.S., and only impacts U.S. weather during the summertime. While cT air is unstable, it tends to remain cloudless due to its extremely low humidity content. If a cT air mass lingers over a region for any period of time, a severe drought can occur.
Which is the coldest air mass in North America?
Continental Arctic (cA) Air. Like continental polar air, continental arctic air is also cold and dry, but because it forms farther north over the Arctic basin and Greenland ice cap, its temperatures are generally colder. It is also generally only a wintertime air mass.