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Figure 5.25b Distortion of a long-lived meteor trail due to mesospheric winds. The size
of the photo is about 1
5 km. Note that the trail exhibits both laminar and turbulent
behavior. Since altitude increases clockwise in this spiral trail, we see that the upper
portion of the trail (above 95 km) is turbulent and the lower part is laminar. [After Kelley
et al. (2000). Reproduced with permission of the American Geophysical Union.]
.
Sodium lidar
115
110
105
100
95
90
85
80
20
22
00
02
04
06
Local time (AST)
Relative sodium density
Min
Max
Figure 5.26a Sodium density measured during the night in which two rockets were
launched. (Figure courtesy of S. Collins.)
 
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