Regional Gliding School A large section of the troposphere with uniform properties of temperature and moisture in the horizontal. An air mass may be

Regional Gliding School

A large section of the troposphere with uniform properties of

temperature and moisture in the horizontal. An air mass may be several thousand miles across.


CLASSIFICATIONCLASSIFICATION

• Continental Dry c• Maritime Moist m• Arctic Cold

A• PolarModerate P• Tropic Hot

T

Air masses are classified by moisture and temperature:


CONTINENTALCONTINENTALARCTIC (cA)ARCTIC (cA)

• Form over the artic

• Remains over land as it moves south

• Dry and cold

• Very low tropopause


MARITIMEMARITIMEARCTIC (mA)ARCTIC (mA)

• Form in the arctic • Spends short time over

North Pacific or North Atlantic Oceans

• Moist and cold

• Low tropopause


MARITIME POLAR (mP)MARITIME POLAR (mP)

• Formed in the arctic

• Spends a longer time over Pacific/Atlantic Oceans

• Moist and cool

• Medium tropopause


MARITIMEMARITIMETROPICAL (mT)TROPICAL (mT)

• Forms over Southern Pacific and Southern Atlantic Oceans

• Causes fog that effects Atlantic Provinces

• Moist and hot

• High tropopause


NOTE: You must use the buttons in the Confirmation Stage


A

B

C

D

Cold

Moderate

Let's try a few review questions on Meteorology:

Question #1 - What does the word “Arctic” mean in an air mass name?

Cool

Moist

MeteorologyMeteorologyAir MassesAir Masses

I’m afraid that answer is incorrect

Let's try again...

Flying Scholarship Program


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Let's try again...



That answer is correct.

Let's move on...


CLASSIFICATIONCLASSIFICATION

• Continental Dry c

• Maritime Moist m

• Arctic Cold A

• Polar Moderate P

• Tropic Hot T

Air masses are classified by moisture andtemperature:


A

B

C

D

MA

Ma


Question #2 - What is the abbreviation for Maritime Arctic?

mA

ma



Let's try again...



Let's try again...



Let's try again...




Let's move on...


MARITIMEMARITIMEARCTIC (ARCTIC (mAmA))

• Form in the arctic• Spends short time over

North Pacific orNorth Atlantic Oceans

• Moist and cold

• Low tropopause


• Inherently stable but heating from below creates instability,

• Turbulent,

• Good visibility,

• Cumuliform clouds,

• Shower type precipitation,

• Thunderstorms may occur.


• Stability

• Smooth air

• Poor visibility

• Stratiform clouds

• Steady type precipitation


Modification• Air masses take on the characteristics of the

surface over which they form but are modified, in whole or in part, as they move over different surfaces.

• If the modification is extensive the air mass may be given a new name.

HE

IGH

T

NORTH POLE EQUATOR

cAcA mAmA mPmP mTmT


NOTE: You must use the buttons in the Confirmation Stage


A

B

C

D

Sun

Wind


Question #3 - How are air masses modified?

Precipitation

Surfaces over which they pass



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Modification• Air masses take on the characteristics of the

surface over which they form but aremodified, in whole or in part, as they moveover different surfaces.

• If the modification is extensive the air massmay be given a new name.


A

B

True

False


Question #4 - Unstable air is associated with cold air masses.



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Let's move on...


• Inherently stable but heating from belowcreates instability,

• Turbulent,

• Good visibility,

• Cumuliform clouds,

• Shower type precipitation,

• Thunderstorms may occur.


Congratulations!

You have now completed the Air Masses lesson of the Meteorology Module. Of course, this lesson is always available to you for future reference if required.

You are now ready to move along to the next Meteorology lesson you have not completed or to any other module you wish. You can advance to the Self Test Module if you feel ready to challenge the final exam.

Good Luck!


Documents

Regional Gliding School A large section of the troposphere with uniform properties of temperature and moisture in the horizontal. An air mass may be