Yes. Wind can vary in both speed and direction at different elevations. This variation is called wind shear.
Wind speed is the speed of the wind (in knots) relative to the environment, where as air speed is the speed of the aircraft in the air.
wind shear
An anemometer is used for measuring the speed of wind,
There is no set wind speed to that qualifies as a tornado, though different scales have minimum estimates ranging from 40mph to 65 mph.
Abrasion of rocks by wind
Of course they do.
Surface wind speed is slower because there is friction to slow it down, whereas upper atmosphere wind speed is unobstructed.
Wind speed is the speed of the wind (in knots) relative to the environment, where as air speed is the speed of the aircraft in the air.
An anemometer indicates wind speed, a wind sock, primarily, indicates wind direction
wind shear
The speed difference will be twice the wind difference. Example: Speed of plane (without wind) = 500 km/h, speed of wind = 100 km/h. In this case, the airplane's speed against the wind will be 500 - 100 = 400 km/h, and with prevailing wind, its speed will be 500 + 100 = 600 km/h. These numbers are just examples, actual numbers will vary, depending on the speed of the plane, and the speed of the wind.
We can use wind socks and wind vanes to evaluate the wind direction and anemometers to measure the wind speed.
Winds that are not laminar (most winds near the surface of the earth are turbulent) are at least slightly chaotic and will vary in speed at different locations and altitudes. The turbulent flow is caused by obstructions and variations in the surroundings.
Winds that are not laminar (most winds near the surface of the earth are turbulent) are at least slightly chaotic and will vary in speed at different locations and altitudes. The turbulent flow is caused by obstructions and variations in the surroundings.
wind shear
Wind shear
An anemometer is used for measuring the speed of wind,