Comm 2367 Chapter 8

Front 1

charisma

Back 1

according to sociologist max weber
certain quality of the individual by virtue of which he is set apartf from ordinary men 3 factors:
must interact with self perceptioin
constrained by historical factors

Front 2

3 fundamental characteristics of a communicator

Back 2

authority, credibility, and social attractiveness

Front 3

polar air masses
source regions cP
winter
continental arctic cA air:

Back 3

continental polar and continental artic arctic air mass
northern canada
cP air is very cold dry and very stable air
cP air is still cooler than normal and dry
rare

Front 4

tropi

Back 4

a

Front 5

m maritime tropical
characteristics of air
source regionf

Back 5

• Form over low latitude oceans: are very warm and humid
• mT air is inherently unstable due to high temperature and humidity
• The Gulf of Mexico is the primary source region for the eastern U.S.
• As air advects over the warm continent in summer the high humidity and high heat occasionally combine to dangerous levels

Front 6

maritime polar

Back 6

• mP air masses form over northern oceans and are cool and moist
• mP brings moisture to western mountains

Front 7

continental tropical

Back 7

• Occurs in summer: exclusive to the desert southwest of the U.S. and northern Mexico
• Characteristics: hot and very dry, very unstable yet clear skies due to dryness
• Thunderstorms occur if moisture advection occurs or when air is forced orographically

Front 8

air mass modification process

Back 8

sensible heating of air by the ground
cA and cP moving southward from canada
cold air over warm surfaces creates instability cumulus clouds
cooling from below (sensible heating of ground by air) - mT, cT as they move north
- creates inversions, stratiform clouds
3. drying of air masses
- mP passing over the western Rocky Mountains lose moisture on windward side of mountain ranges
4. moisture evaporated into the air
- cA, cP, mP passing over Great Lakes in Au, Wi and acquiring moisture through long fetches