air masses and fronts - university of california, los...
TRANSCRIPT
![Page 1: Air Masses and Fronts - University of California, Los Angelesclass.atmos.ucla.edu/AS3/scrns/pdf_files/09fronts.aos3.big.pdf · Air Masses and Fronts The battle begins 1. Ch. 9: Air](https://reader035.vdocuments.net/reader035/viewer/2022062600/5aa914c27f8b9a77188c5b55/html5/thumbnails/1.jpg)
Air Masses and Fronts
The battle begins
1
![Page 2: Air Masses and Fronts - University of California, Los Angelesclass.atmos.ucla.edu/AS3/scrns/pdf_files/09fronts.aos3.big.pdf · Air Masses and Fronts The battle begins 1. Ch. 9: Air](https://reader035.vdocuments.net/reader035/viewer/2022062600/5aa914c27f8b9a77188c5b55/html5/thumbnails/2.jpg)
Ch. 9: Air Masses and Fronts
• Air Masses
Sources and Classification
Distribution
• Fronts
Cold Front
Warm Front
Occluded Fronts
2
![Page 3: Air Masses and Fronts - University of California, Los Angelesclass.atmos.ucla.edu/AS3/scrns/pdf_files/09fronts.aos3.big.pdf · Air Masses and Fronts The battle begins 1. Ch. 9: Air](https://reader035.vdocuments.net/reader035/viewer/2022062600/5aa914c27f8b9a77188c5b55/html5/thumbnails/3.jpg)
Air Masses
• Definition: a volume of air with a particular temperature and/or humidity characteristics
• Source Region: where air masses originate
• Classification: warm or cold, moist or dry
3
![Page 4: Air Masses and Fronts - University of California, Los Angelesclass.atmos.ucla.edu/AS3/scrns/pdf_files/09fronts.aos3.big.pdf · Air Masses and Fronts The battle begins 1. Ch. 9: Air](https://reader035.vdocuments.net/reader035/viewer/2022062600/5aa914c27f8b9a77188c5b55/html5/thumbnails/4.jpg)
Air Masses
xX
Humidity Temperature
c Continental
m Maritime
P Polar
T Tropical
4
![Page 5: Air Masses and Fronts - University of California, Los Angelesclass.atmos.ucla.edu/AS3/scrns/pdf_files/09fronts.aos3.big.pdf · Air Masses and Fronts The battle begins 1. Ch. 9: Air](https://reader035.vdocuments.net/reader035/viewer/2022062600/5aa914c27f8b9a77188c5b55/html5/thumbnails/5.jpg)
North American Air Masses
5
![Page 6: Air Masses and Fronts - University of California, Los Angelesclass.atmos.ucla.edu/AS3/scrns/pdf_files/09fronts.aos3.big.pdf · Air Masses and Fronts The battle begins 1. Ch. 9: Air](https://reader035.vdocuments.net/reader035/viewer/2022062600/5aa914c27f8b9a77188c5b55/html5/thumbnails/6.jpg)
North American Air Masses
6
![Page 7: Air Masses and Fronts - University of California, Los Angelesclass.atmos.ucla.edu/AS3/scrns/pdf_files/09fronts.aos3.big.pdf · Air Masses and Fronts The battle begins 1. Ch. 9: Air](https://reader035.vdocuments.net/reader035/viewer/2022062600/5aa914c27f8b9a77188c5b55/html5/thumbnails/7.jpg)
Fronts
— Boundary between air masses
60°N
Polar Easterlies
Prevailing Westerlies
cP
mT
Sub-polar Front
7
![Page 8: Air Masses and Fronts - University of California, Los Angelesclass.atmos.ucla.edu/AS3/scrns/pdf_files/09fronts.aos3.big.pdf · Air Masses and Fronts The battle begins 1. Ch. 9: Air](https://reader035.vdocuments.net/reader035/viewer/2022062600/5aa914c27f8b9a77188c5b55/html5/thumbnails/8.jpg)
8
![Page 9: Air Masses and Fronts - University of California, Los Angelesclass.atmos.ucla.edu/AS3/scrns/pdf_files/09fronts.aos3.big.pdf · Air Masses and Fronts The battle begins 1. Ch. 9: Air](https://reader035.vdocuments.net/reader035/viewer/2022062600/5aa914c27f8b9a77188c5b55/html5/thumbnails/9.jpg)
Fronts
• Fronts are named by the “winning” airmass
Ex. Cold front: cold air pushes warm air up and out of its way
• Line is boundary between airmasses at the ground
Symbols point in the direction of the frontal movement
9
![Page 10: Air Masses and Fronts - University of California, Los Angelesclass.atmos.ucla.edu/AS3/scrns/pdf_files/09fronts.aos3.big.pdf · Air Masses and Fronts The battle begins 1. Ch. 9: Air](https://reader035.vdocuments.net/reader035/viewer/2022062600/5aa914c27f8b9a77188c5b55/html5/thumbnails/10.jpg)
Cold Front
10
![Page 11: Air Masses and Fronts - University of California, Los Angelesclass.atmos.ucla.edu/AS3/scrns/pdf_files/09fronts.aos3.big.pdf · Air Masses and Fronts The battle begins 1. Ch. 9: Air](https://reader035.vdocuments.net/reader035/viewer/2022062600/5aa914c27f8b9a77188c5b55/html5/thumbnails/11.jpg)
Cold Front
11
![Page 12: Air Masses and Fronts - University of California, Los Angelesclass.atmos.ucla.edu/AS3/scrns/pdf_files/09fronts.aos3.big.pdf · Air Masses and Fronts The battle begins 1. Ch. 9: Air](https://reader035.vdocuments.net/reader035/viewer/2022062600/5aa914c27f8b9a77188c5b55/html5/thumbnails/12.jpg)
Warm Front
12
![Page 13: Air Masses and Fronts - University of California, Los Angelesclass.atmos.ucla.edu/AS3/scrns/pdf_files/09fronts.aos3.big.pdf · Air Masses and Fronts The battle begins 1. Ch. 9: Air](https://reader035.vdocuments.net/reader035/viewer/2022062600/5aa914c27f8b9a77188c5b55/html5/thumbnails/13.jpg)
Warm Front
13
![Page 14: Air Masses and Fronts - University of California, Los Angelesclass.atmos.ucla.edu/AS3/scrns/pdf_files/09fronts.aos3.big.pdf · Air Masses and Fronts The battle begins 1. Ch. 9: Air](https://reader035.vdocuments.net/reader035/viewer/2022062600/5aa914c27f8b9a77188c5b55/html5/thumbnails/14.jpg)
Occluded Front
14
![Page 15: Air Masses and Fronts - University of California, Los Angelesclass.atmos.ucla.edu/AS3/scrns/pdf_files/09fronts.aos3.big.pdf · Air Masses and Fronts The battle begins 1. Ch. 9: Air](https://reader035.vdocuments.net/reader035/viewer/2022062600/5aa914c27f8b9a77188c5b55/html5/thumbnails/15.jpg)
Cold Occlusion
15
![Page 16: Air Masses and Fronts - University of California, Los Angelesclass.atmos.ucla.edu/AS3/scrns/pdf_files/09fronts.aos3.big.pdf · Air Masses and Fronts The battle begins 1. Ch. 9: Air](https://reader035.vdocuments.net/reader035/viewer/2022062600/5aa914c27f8b9a77188c5b55/html5/thumbnails/16.jpg)
Warm Occlusion
16