Air Masses GEoDe CD. (Great) Lakes Effect Snow Cold cP (continental polar air from Canada) moves...
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Transcript of Air Masses GEoDe CD. (Great) Lakes Effect Snow Cold cP (continental polar air from Canada) moves...
![Page 1: Air Masses GEoDe CD. (Great) Lakes Effect Snow Cold cP (continental polar air from Canada) moves over the warm lakes and picks-up moisture that’s evaporating.](https://reader035.fdocuments.us/reader035/viewer/2022062519/5697c0131a28abf838cccedd/html5/thumbnails/1.jpg)
Air Masses
GEoDe CD
![Page 2: Air Masses GEoDe CD. (Great) Lakes Effect Snow Cold cP (continental polar air from Canada) moves over the warm lakes and picks-up moisture that’s evaporating.](https://reader035.fdocuments.us/reader035/viewer/2022062519/5697c0131a28abf838cccedd/html5/thumbnails/2.jpg)
![Page 3: Air Masses GEoDe CD. (Great) Lakes Effect Snow Cold cP (continental polar air from Canada) moves over the warm lakes and picks-up moisture that’s evaporating.](https://reader035.fdocuments.us/reader035/viewer/2022062519/5697c0131a28abf838cccedd/html5/thumbnails/3.jpg)
Mid-latitudes90
60
30
0
30
60
90
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What is an Air Mass?
• Immense body of air
• 1000 miles across, several km thick.
• Characteristics:– Similar temperature– Similar moisture (humidity)– It moves– It originates in a source region– It brings constant weather conditions
![Page 5: Air Masses GEoDe CD. (Great) Lakes Effect Snow Cold cP (continental polar air from Canada) moves over the warm lakes and picks-up moisture that’s evaporating.](https://reader035.fdocuments.us/reader035/viewer/2022062519/5697c0131a28abf838cccedd/html5/thumbnails/5.jpg)
Source Regionwhere the air mass starts
• Where air masses originate
• Have uniform physical characteristics
• Large areas
• The air stays put (stagnates) long enough to reach equilibrium.
• Does NOT have irregular topography (its FLAT: no mountains, land & water)
• It does NOT have cyclones
![Page 6: Air Masses GEoDe CD. (Great) Lakes Effect Snow Cold cP (continental polar air from Canada) moves over the warm lakes and picks-up moisture that’s evaporating.](https://reader035.fdocuments.us/reader035/viewer/2022062519/5697c0131a28abf838cccedd/html5/thumbnails/6.jpg)
Continental (land) Polar COLD
Maritime (water) Tropical: WARM
![Page 7: Air Masses GEoDe CD. (Great) Lakes Effect Snow Cold cP (continental polar air from Canada) moves over the warm lakes and picks-up moisture that’s evaporating.](https://reader035.fdocuments.us/reader035/viewer/2022062519/5697c0131a28abf838cccedd/html5/thumbnails/7.jpg)
Air masses
Temperature Polar or Arctic Tropical
Moisture / Humidity
Continental
Maritime
Cold, frigid air hot, warm air
Dry land
Wet ocean
cP or cA cT
mP mT
![Page 8: Air Masses GEoDe CD. (Great) Lakes Effect Snow Cold cP (continental polar air from Canada) moves over the warm lakes and picks-up moisture that’s evaporating.](https://reader035.fdocuments.us/reader035/viewer/2022062519/5697c0131a28abf838cccedd/html5/thumbnails/8.jpg)
North American Air Masses
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What air mass(s) influence OUR weather?
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LOW pressure:
Warm, moist air
HIGH pressure:cold, dry air
![Page 11: Air Masses GEoDe CD. (Great) Lakes Effect Snow Cold cP (continental polar air from Canada) moves over the warm lakes and picks-up moisture that’s evaporating.](https://reader035.fdocuments.us/reader035/viewer/2022062519/5697c0131a28abf838cccedd/html5/thumbnails/11.jpg)
Global Air Masses
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Source Regions
cA _____________________________
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cT: __________ ___________
LATITUDE
____________
_____________
_____________
_____________
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![Page 15: Air Masses GEoDe CD. (Great) Lakes Effect Snow Cold cP (continental polar air from Canada) moves over the warm lakes and picks-up moisture that’s evaporating.](https://reader035.fdocuments.us/reader035/viewer/2022062519/5697c0131a28abf838cccedd/html5/thumbnails/15.jpg)