Calculate the approximate velocity of winds at low pressure area using the formula under the Classification Scheme developed by Panofsky and Brier, if the storm central pressure is 996 hpa.
Answer: 38.0 knots
Given: Storm central pressure = 996
What is asked: Wind velocity
Solution:
This is the formula: Wind Velocity = 3.9 + 3.5√1016 - storm central pressure
= 3.9 + 3.5√1016-996
= 3.9 + 3.5√20
= 19.55 meter/sec
Notice that the unit of the choices are in knots. So how can we convert 19.55 meter/sec into knots? What we shall do is to multiply it by 1.944.
So, 19.55 meter/sec x 1.944 = 38 knots
3.9, 3.5 and 1016 are constant. 996 is from the given. And this is the symbol of square root √.
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Answer: 38.0 knots
Given: Storm central pressure = 996
What is asked: Wind velocity
Solution:
This is the formula: Wind Velocity = 3.9 + 3.5√1016 - storm central pressure
= 3.9 + 3.5√1016-996
= 3.9 + 3.5√20
= 19.55 meter/sec
Notice that the unit of the choices are in knots. So how can we convert 19.55 meter/sec into knots? What we shall do is to multiply it by 1.944.
So, 19.55 meter/sec x 1.944 = 38 knots
3.9, 3.5 and 1016 are constant. 996 is from the given. And this is the symbol of square root √.
See this picture:
See Related Problem:
