Question

If an air parcel is carried poleward to 30º latitude starting from equator, conserving angular momentum as it moves. At what speed will it be moving when it reaches 30º?
a)120 m/s
b)100 m/s
c)110 m/s
d)90 m/s​

Answer 1

Answer:

100 m/s

Explanation:

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Answer 2

Explanation:

Consider an air parcel on the equator. Due to Hadley circulation it is being carried pole-ward. Suppose that the air parcel was stationary at the equator and it conserves angular momentum during the entire motion. What would be its the zonal velocity when it reaches to 25 °N?

Hint: The angular momentum per unit mass of air moving with zonal velocity u is

M =(QR cos+u) R cos

where is rotation rate, is the latitude, and R is the radius of the Earth.