Class 18 (starting at Slide 15)
(and some 17 and 19)
 air pressure
 http://www.youtube.com/watch?v=vGulvutZJpg
 What is wind?
 What influences wind direction?
 What influences wind speed?
 Let’s figure out step-by-step, what happens to a
rising air parcel.
33%
33%
33% 1. Will rise
2. Will sink
3. Will maintain its vertical position
50%
50% 1. Be subject to lessening air pressure
2. Be subject to increased air pressure
33%
33%
33% 1. Expand in volume
2. Contract in volume
3. Stay the same size
50%
50% 1. Collide with each other more
2. Collide with each other less
50%
50% 1. Speed up
2. Slow down
50%
50% 1. Less kinetic energy, lower temperature
2. More kinetic energy, higher temperature
50%
50% 1. Water vapor will condense
2. Water will evaporate
50%
50% 1. Clouds and precipitation
2. Clear skies and dry conditions
50%
50% 1. Low pressure system
2. High pressure system
25%
25%
25%
25% 1. It is called a vortex low
2. It is a tornado
3. It is called a cyclone
4. It is called an anticyclone
25%
25%
25%
25% 1. Converge and move counterclockwise
2. Converge and move clockwise
3. Diverge and move counterclockwise
...
http://www.atmo.arizona.edu/products/wximagery/globalwv.html
http://www.cpc.noaa.gov/products/global_precip/html/wpage.gl_ir_lo
 Monsoon Patterns
Pg class 18 (some 17)
Pg class 18 (some 17)
Pg class 18 (some 17)
Pg class 18 (some 17)
Pg class 18 (some 17)
Pg class 18 (some 17)
Pg class 18 (some 17)
Pg class 18 (some 17)
Pg class 18 (some 17)
Pg class 18 (some 17)
Pg class 18 (some 17)
Pg class 18 (some 17)
Pg class 18 (some 17)
Pg class 18 (some 17)
Pg class 18 (some 17)
Pg class 18 (some 17)
Pg class 18 (some 17)
Pg class 18 (some 17)
Pg class 18 (some 17)
Pg class 18 (some 17)
Pg class 18 (some 17)
Pg class 18 (some 17)
Pg class 18 (some 17)
Pg class 18 (some 17)
Pg class 18 (some 17)
Pg class 18 (some 17)
Pg class 18 (some 17)
Pg class 18 (some 17)
Pg class 18 (some 17)
Pg class 18 (some 17)
Pg class 18 (some 17)
Pg class 18 (some 17)
Pg class 18 (some 17)
Pg class 18 (some 17)
Pg class 18 (some 17)
Pg class 18 (some 17)
Pg class 18 (some 17)
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Pg class 18 (some 17)

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Pg class 18 (some 17)

  1. 1. Class 18 (starting at Slide 15) (and some 17 and 19)
  2. 2.  air pressure  http://www.youtube.com/watch?v=vGulvutZJpg
  3. 3.  What is wind?
  4. 4.  What influences wind direction?  What influences wind speed?
  5. 5.  Let’s figure out step-by-step, what happens to a rising air parcel.
  6. 6. 33% 33% 33% 1. Will rise 2. Will sink 3. Will maintain its vertical position
  7. 7. 50% 50% 1. Be subject to lessening air pressure 2. Be subject to increased air pressure
  8. 8. 33% 33% 33% 1. Expand in volume 2. Contract in volume 3. Stay the same size
  9. 9. 50% 50% 1. Collide with each other more 2. Collide with each other less
  10. 10. 50% 50% 1. Speed up 2. Slow down
  11. 11. 50% 50% 1. Less kinetic energy, lower temperature 2. More kinetic energy, higher temperature
  12. 12. 50% 50% 1. Water vapor will condense 2. Water will evaporate
  13. 13. 50% 50% 1. Clouds and precipitation 2. Clear skies and dry conditions
  14. 14. 50% 50% 1. Low pressure system 2. High pressure system
  15. 15. 25% 25% 25% 25% 1. It is called a vortex low 2. It is a tornado 3. It is called a cyclone 4. It is called an anticyclone
  16. 16. 25% 25% 25% 25% 1. Converge and move counterclockwise 2. Converge and move clockwise 3. Diverge and move counterclockwise 4. Diverge and move clockwise
  17. 17. http://www.atmo.arizona.edu/products/wximagery/globalwv.html
  18. 18. http://www.cpc.noaa.gov/products/global_precip/html/wpage.gl_ir_lo
  19. 19.  Monsoon Patterns
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