Air Masses

Question 1

Air Masses

Answer 1

An air is a large body of air,usually 1000 miles or more across, that has similar properties of temp and moisture on the horizontal.

Question 2

Air Masses- source regions is?

Answer 2

The region in which an air mass forms.

Question 3

Air mass weather is determined by the following?

Answer 3

Moisture
Stability
Cooling or heating process

Question 4

Air Masses classification names are?

Answer 4

First part of this name identifies the moisture content

Second part identifies the temp

Question 5

Moisture classification

Answer 5

Continental = dry

Maritime = moist

Question 6

Temperature classification

Answer 6

Arctic=cold

Polar=cool/cold

Tropical=warm

Question 7

Air Masses types?

Answer 7

Continental arctic cA

Maritime Arctic mA

Continental polar cP

Maritime Polar mP

Continental tropical cT

Maritime tropical mT

Question 8

Commons air Masses in Canada from north to south ?

Answer 8

Continental Artic cA winter

Maritime Artic mA summer and winter

Maritime Polar mP summer and winter

Maritime Tropical mT summer

Question 9

Continental arctic cA characteristics

Answer 9

Cold and dry
Originates north of the arctic circle

During winter air often plunged southward over Canada and USA

Rarely form in summer when nearly 24 hours daylight able to warm the arctic

Question 10

Maritime Arctic mA

Answer 10

Cold and moist

Usually form farther to the south of continental arctic air

Dominate Canadian weather at winter

Summer bring clear weather to the north

Question 11

Maritime polar mP

Answer 11

Cool and moist

Air Masses form over the norther Atlantic and norther pacific oceans

Can form anytime of the year and are usually not as cold as continental polar air Masses

Question 12

Maritime tropical mT

Answer 12

Warm temperatures with a lot of moisture

Common across eastern Canada and originate over the warm water of south Atlantic Ocean and the Gulf of Mexico

Responsable a for
The hot and humid days of summer

Question 13

Stable air Masses characteristics

Answer 13

Poor low level visibility

Layer type cloud

Steady precipitation

Steady winds

Smooth flying conditions

Question 14

Unstable air Masses characteristics

Answer 14

Good visibility

Convective type cloud

Showery precipitation

Gusty winds

Turbulence

Question 15

If an air mass is modified by warming from below passing over warm surface then????

Answer 15

Instability and convection will result

Air Masses warmth from below becomes more unstable

Question 16

If an air Masses is modified by cooling from below passing over a cold surface then????

Answer 16

An inversion will occur

This inversion will resist mixing and lead to modification only in the lowest levels of the air mass

Cooling from below will tend to become more stable

Question 17

When different air masses collide the boundaries between the masses are known as?

Answer 17

Fronts