[Dean's World] Mary Madigan: Alien invasion?

[notify at powerblogs.com]

Posted by Mary Madigan:
Alien invasion?
http://www.deanesmay.com/posts/1159989360.shtml


   [1]lenticular cloud 

   [2]lenticular cloud2 

   No, just [3]lenticular clouds.

     When clouds go over a mountain top, the mountains cause a pattern
     of up and down waves in the wind, with lenticular clouds forming at
     the peaks of these waves.

     Simply, when clouds go over a mountain top, the mountains cause a
     pattern of up and down waves in the wind, with lenticular clouds
     forming at the peaks of these waves.

   ..more mountain cloud patterns - [4]waves..

   [5]wave cloud 

     Kelvin-Helmholtz wave clouds are formed when there are two parallel
     layers of air that are usually moving at different speeds and in
     opposite directions. The upper layer of air usually moves faster
     than the lower layer because there is less friction. In order for
     us to see this shear layer, there must be enough water vapor in the
     air for a cloud to form. Even if clouds are not present to reveal
     the shear layer, pilots need to be aware of invisible atmospheric
     phenomenon.

   When you learn about flying you learn [6]about these clouds, but
   unless you live in a mountainous area, you rarely see them.

   My son and I were just talking aobut mountain flying and lenticular
   clouds. This site is a great find - thanks to [7]author/seablogger
   Alan Sullivan.

References

   1. file://localhost/files/mary-lenticular1.jpg
   2. file://localhost/files/mary-lenticular2.jpg
   3. http://valuca.funtigo.com/?preview=y&g=25544746&cr=1&rfm=y
   4. http://valuca.funtigo.com/?preview=y&g=25544746&cr=1&rfm=y
   5. file://localhost/files/mary-lent-wave.jpg
   6. http://en.wikipedia.org/wiki/Lenticular_cloud
   7. http://www.seablogger.com/?p=6145