Chapter 17 Mountain Waves

Question 1

Mountain waves

Answer 1

A train of waves is generated on the leewards side of the range

Question 2

What is the extend of mountain waves

Answer 2

100 to 200km downstream and vertical till stratosphere

Question 3

Necessary conditions for mountain waves

Answer 3

Air flow across the ridge with 30° perpendicular to it
Wind speed of 7m/s in smaller mountain and 15 for larger mountains
Deep steady flow till a height band
And stable below the ridge and above the cret of the first waves then unstable above that

Question 4

What clouds are formed

Answer 4

On top the mountain is cap clouds
Then first crest rotor clouds
Then few thousand feet up lenticulaar clouds

Question 5

Rotor streaming

Answer 5

When the wind are strong at the low level and opp at the higher level it is formed