Jet Stream

1
Jet Stream
2
Wasaburo Oishi, Japanese Discoverer (1920s)
3
(No Transcript)
4
Fu-Go Balloon Weapon
5
(No Transcript)
6
Strahlstromung (German) for jet stream first
used in 1939

• Big effects on bomber flights during WWII

7
Jet Stream winds are not uniform
8
250 mb isotach
9
(No Transcript)
10
Main Upper Tropospheric Jets Closely Associated
with the Tropopause
11
Tropopause
12
Tropopause Heighthttp//www.atmos.washington.edu
/hakim/tropo/tropo.html
13
(No Transcript)
14
Subtropical Jet Stream
15
(No Transcript)
16
(No Transcript)
17
Subtropical Jet Stream Often Associated with a
cloud band
18

• http//itg1.meteor.wisc.edu/wxwise/AckermanKnox/ch
  ap7/subtropical_jet.html

19
(No Transcript)
20
(No Transcript)
21
(No Transcript)
22
Jet Streams Relationship to Temperature Can Be
Shown through Thermal Wind Arguments
23
250 mb isotach
24
1000-500 mb thickness-large thickness gradient
and thus thermal wind near jet core
25
Or alternatively
26
The Jet Stream
Recall the horizontal temperature effects on the
pressure
500 mb
700 mb
850 mb
Psurface
Warm
Cold
27
The Jet Stream
Consider the balance of forces at each level
Co
PGF
500 mb
700 mb
850 mb
Ps
Warm
Cold
28
There are a variety of jet stream configurations
that are well-known
29
(No Transcript)
30
(No Transcript)
31
(No Transcript)
32
(No Transcript)
33
(No Transcript)
34
(No Transcript)
35
(No Transcript)