1. 6.9: Air Masses
Unit 6: Meteorology
March 13, 2012
Sanders

2. Convection
Convection occurs when a liquid or gas is in contact with a solid body at a different temperature and is always with the motion of the liquid or gas.
Convection transfers heat through the exchange of hot and cold molecules.
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Unit 6: Meteorology

3. Conduction
Conduction requires physical contact between the bodies or portions of bodies exchanging heat.
Conduction is the transfer of heat in a solid object.
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Unit 6: Meteorology

4. Radiation Radiation does not require contact between bodies.
Radiation is the transfer of heat by electromagnetic radiation.
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Unit 6: Meteorology

5. Heat Transfer
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Unit 6: Meteorology

6. Air Masses
Air with the same temperature, pressure, and humidity called air masses.
Air Masses have two distinguishing qualities; its temperature and its humidity.
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Unit 6: Meteorology

7. Air Masses
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Unit 6: Meteorology

8. Air Masses c T
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Unit 6: Meteorology

9. Air Masses c T m T
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Unit 6: Meteorology

10. Air Masses c T m T c P
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Unit 6: Meteorology

11. Air Masses c T m T c P m P
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Unit 6: Meteorology

12. mT maritime tropical
A warm, moist air mass, that may have originated over the Gulf of Mexico.
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Unit 6: Meteorology

13. mP maritime polar:
a cold, moist air mass that may have originated over the North Atlantic or North Pacific Ocean
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Unit 6: Meteorology

14. cA continental arctic
An unusually cold and dry air mass from arctic Canada
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Unit 6: Meteorology

15. cP continental polar
a cold, dry air mass, that may have originated over central Canada
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Unit 6: Meteorology

16. cT continental tropical
a warm, dry air mass, that may have originated over Mexico or the American Southwest desert region
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Unit 6: Meteorology