1. 4 3 . 7
Air Masses

2. AIR MASS
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.

3. CLASSIFICATION Air masses are classified by moisture and temperature:
Continental Dry c
Maritime Moist m
Arctic Cold A
Polar Moderate P
Tropic Hot T

4. CONTINENTAL ARCTIC (cA)
Form over the artic
Remains over land as it moves south
Dry and cold
Very low tropopause

5. MARITIME ARCTIC (mA) Form in the arctic
Spends short time over North Pacific or North Atlantic Oceans
Moist and cold
Low tropopause

6. MARITIME POLAR (mP) Formed in the arctic
Spends a longer time over Pacific/Atlantic Oceans
Moist and cool
Medium tropopause

7. MARITIME TROPICAL (mT)
Forms over Southern Pacific and Southern Atlantic Oceans
Causes fog that effects Atlantic Provinces
Moist and hot
High tropopause

8. NOTE: You must use the buttons in the Confirmation Stage

9. Meteorology Air Masses
Let's try a few review questions on Meteorology:
Question #1 - What does the word “Arctic” mean in an air mass name? A
Cold B
Moderate C
Cool
Moist D

10. I’m afraid that answer is incorrect
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That answer is correct.
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TP312 & TP 14371

12. Meteorology Air Masses
Let's try a few review questions on Meteorology:
Question #2 - What is the abbreviation for Maritime Arctic? A MA B Ma C mA D ma

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TP312 & TP 14371

15. Cold Air Mass
Inherently stable but heating from below creates instability,
Turbulent,
Good visibility,
Cumuliform clouds,
Shower type precipitation,
Thunderstorms may occur.

16. Warm Air Mass
Stability
Smooth air
Poor visibility
Stratiform clouds
Steady type precipitation

17. 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.

18. HEIGHT
NORTH POLE
EQUATOR cA mA mP mT

19. NOTE: You must use the buttons in the Confirmation Stage

20. Meteorology Air Masses
Let's try a few review questions on Meteorology:
Question #3 - How are air masses modified? A
Sun B
Wind C
Precipitation D
Surfaces over which they pass

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22. Flying Scholarship Program
That answer is correct.
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TP312 & TP 14371

23. Meteorology Air Masses
Let's try a few review questions on Meteorology:
Question #4 - Unstable air is associated with cold air masses. A
True B
False

24. I’m afraid that answer is incorrect
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That answer is correct.
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TP312 & TP 14371

26. Meteorology Air Masses 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!