20.1
Maritime air mass
A humid air mass that forms over oceans
Tropical air mass
A warm air mass that forms in the tropics and has low air pressure
What are the two characteristics used to classify air masses?
Air masses are classified according to the temperature and moisture
Which type of air mass causes lake effect snow
Continental polar
what happens to an air mass as it moves into a new source region.
When an air mass moves over a new region, it shares its temperature and humidity with that region. So the temperature and humidity of a particular location depends partly on the characteristics of the air mass that sits over it.
Air Mass
a large body of air that is located in the troposphere and is characterized by similar temperatures and amounts of moisture at any given altitude.
Polar air mass
air mass that forms over cold regions
A situation in which the weather if fairly constant is called...
air mass weather
Continental air mass
an air mass that forms over land; it is normally relatively dry
Source region
an extensive region of the earth's surface where large masses of air having uniform temperature and humidity conditions characteristic of the region originate.
Continental polar air masses are not, as a ruke,...
associated with heavy precipitation.
when air mass moves over an area it....
carries its temperature and moisture conditions with it.
Air masses are classified according to the temperature and....
moisture characteristics of their source regions.
Only occasionally do cT air masses move...
outside their source regions.
An air mass is a body of air with horizontally uniform....
temperature, humidity, and pressure.
In addition to their overall temperature, air masses are classified according...
to the surface over which they form.
Maritime tropical air is the source of much, if not all, of the precipitation received in the...
two thirds of the United states.
As an air mass moves, its characteristics change and so does the...
weather in the area over which it moves.
