Chapter 7 Flashcards
Weather
Temperature, precipitation, air pressure, humidity, wind speed.
Subtropical, Hot Desert
High temperatures
Warm soils; grasses, shrubs and succulents
Whether and climate is predicted when?
Snapshot
Long term
Air mass
Body of air usually referred by region.
Ex: North America, maritime tropical, continental tropical, maritime polar, and continental polar.
Air mass includes conditions such as,
Temperature
Humidity
Stability
Weather patterns can occur,
When two different air push against each other but don’t mix.
Moister
maritime [wet] Over water
continental [dry] Over land
Continental Polar (P)
Where?
When?
Latitude?
Weather?
N. Hemisphere only
Most developed in the winter
Middle- to high-latitude weather
Dense, cold air displaces moist, warm air, lifting and cooling this warm air
Cold, stable air, clear skies, high pressure
Maritime Polar (mP)
Where?
Weather?
What happens?
Sit over northern oceans
Cool, moist, unstable, low pressure
West: heavy rains as cool, moist air flows over mountains East: not as developed as the west
Maritime Tropical (mT)
Gulf/Atlantic
Extremely unstable, high energy, moist, a lot of rain from late spring to early Fall
Maritime Tropical (mT)
Pacific
Stable to conditionally stable, lower in moisture and energy, low average precipitation compared to mT Gulf/Atlantic
Air Madd Modification
Air masses move to another region then the temperature changes when going into another region.
Convergent Lifting
Occurs when streams of air flowing into a low-pressure area collide and are pushed upward
Convectional Lifting
When solar energy passes through the atmosphere and heats the surface, where the air becomes less dense than the air around it, making it rise.
Orographic Lifting
Changes to airflow when the elevated terrain, such as mountains, forces air upward.