Weather Radar Fundamentals

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Doppler Velocity Measurements » Large-Scale Wind Interpretation » Directionally Sheared Winds » Question 2

What is the wind speed at the level of the first range ring? (Choose the best answer.)

A plan view of idealized radial velocity. Colors to the left of the radar are blue and green, while colors to the right are red and yellow. A line of gray, indicating velocities of zero, forms an "S" shape and intersects the location of the radar in its center. Red and yellow colors lie to the right of the "S" and blue and green colors lie to the left of the "S".

The correct answer is d.

A plan view of idealized radial velocity. Colors to the left of the radar are blue and green, while colors to the right are red and yellow. A line of gray, indicating velocities of zero, forms an "S" shape and intersects the location of the radar in its center. Red and yellow colors lie to the right of the "S" and blue and green colors lie to the left of the "S". Two circles at the level of the first range ring are drawn within the maximum of outbound colors and the minimum of inbound colors. These circles correspond to the orange and aqua colors, respectively, that are between 20 and 25 knots.

Examining along the rest of the range ring, we can see that the maximum values are 20 to 25 outbound and the same inbound.

Please make a selection.