A large parcel of air that has relatively uniform properties in the horizontal dimension and moves as an entity
characteristics of air masses
must be large, homogeneous, and distinct from surrounding air
formed when atmosphere is calm for a few days
how are air masses classified?
classified according to temperature and moisture characteristics of their source regions.
Continental Arctic (cA)
Extremely cold and very dry, extremely stable, minimal could cover.
Continental Polar (cP)
cold and dry. very stable. minimal could cover.
Maritime Polar (mP)
cold. damp. cloudy. somewhat unstable.
Continental Tropical (cT)
Hot and dry. very unstable.
Maritime Tropical (mT)
warm and humid.
Source regions tend to be...
Associated with air that is stationary over a long period of time
warm air displaces cold air
shallow lift produces stratus clouds
cold air displaces warm air
steep uplift causes cumulonimbus clouds and heavy precipitation
Neither air mass encroaches
Warmer Air is displaced aloft
When two fronts meet
Cold front closes on a warm front
Strong humidity boundary
When maritime tropical and continental tropical air masses reside next to eachother
found in the southern great plains
Birth of a cyclone
Characteristics of cyclogenesis
begins along the polar front
low pressure forms
The warm front is always____ of the cold front
Please allow access to your computer’s microphone to use Voice Recording.
We can’t access your microphone!
Click the icon above to update your browser permissions and try again
Reload the page to try again!
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Your microphone is muted
For help fixing this issue, see this FAQ.