Meterology 1

Question 1

Define what is an air mass and the 2 principle characteristics

Answer 1

A mass of air in the tropopause with uniform properties of temperature and moisture

Horizontal

Can be really wide

Question 2

Where does the air mass takes his properties from?

Answer 2

The ground or the water under it

Question 3

What is the name of an air mass that have been formed over a large body of water?

Answer 3

Maritime air

Question 4

What is the name of an air mass that have been formed over a large land area?

Answer 4

Continental artic, continental polar, maritime artic, maritime polar, maritime tropical and continental tropicale

Question 5

Describe continental artic air mass

Answer 5

Very cold, dry, very stable, very low in the tropopause

Question 6

Describe maritime artic air mass

Answer 6

Cold, moist, unstable in lower levels, low in the tropopause

Question 7

Describe continental polar air mass

Answer 7

Cold, dry, mostly stable, low in the tropopause

Question 8

Describe maritime polar air mass

Answer 8

Cool, moist, unstable, medium high in the tropopause

Question 9

Describe maritime tropical air mass

Answer 9

Warm, moist, very unstable, high in the tropopause

Question 10

Describe continental tropical air mass

Answer 10

Very hot, dry, very unstable, very high

Question 11

What are the characteristic of a cold air mass

Answer 11

Unstable, turbulence, good visibility, cumulus clouds, showers-hail-thunderstorm

Question 12

What are the characteristic of warm air mass?

Answer 12

Stable, smooth air, bad visibility, stratus clouds or fog, drizzle

Question 13

Define what is a front

Answer 13

The transition between two air mass

Question 14

How the front is named?

Answer 14

By the coolest of the two air mass

Question 15

A cold front is….

Answer 15

Advancing

Question 16

A warm front is……

Answer 16

Retreating

Question 17

What is an occluded front?

Answer 17

It is when the cold front overtakes a hotter front and push it up

Question 18

What is a stationary front?

Answer 18

The front dosent advance or retreat

Question 19

What happen in a warm front?

Answer 19

The cold air is retreating and the warm air move upward over the cold air

Question 20

In a warm front, what happen if the air is moist and stable?

Answer 20

Stratus clouds will be created, the ceiling gradually falls and there follow a steady rain falling from nimbostratus clouds

Question 21

In a warm front what happen if the air is moist and unstable?

Answer 21

Cumulonimbus or thunderstorm will be created

Question 22

Describe a cold front

Answer 22

The cooler air (denser) stay close to the ground and undercuts the warmer air. The warm air rising give place to cumulus clouds wish can creat thunderstorm or even a squall line.

Question 23

How does a stationary front work?

Answer 23

The two front are equal of pressure so none of them advance or retreat they slide together till they disappear.

Question 24

How many mass of air do you have in an occlusion?

Answer 24

3 mass of air

Question 25

What is the name of the warm air wedge in an occlusion ?

Answer 25

Trowal

Question 26

Define frontogenesis

Answer 26

A front that increase in intensity

Question 27

Define frontolysis

Answer 27

A front that is decreasing in intensity