A Solid State Drag Anemometer Used to Measure Vertical Wind Shear
AIR FORCE INSTITUTE OF TECHNOLOGY WRIGHT-PATTERSON AFB OH WRIGHT-PATTERSON AFB United States
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Micrometeorologists and air pollution meteorologists often require reliable indications of the vertical shear in the horizontal wind field in the planetary boundary layer. The vertical wind shear is an essential parameter of atmospheric stability and turbulent mixing. Accurate measurements of this quantity and vertical temperature gradients are combined to indicate atmospheric stability. The drag anemometer is a simple device that is well suited for wind velocity measurements. The drag force resulting from wind flowing over a body causes deformation of a cantilever the strain in this strip can be sensed by strain gages. The goal of this research was to determine whether or not it is possible to accurately measure vertical gradients of horizontal velocity over short distances using the drag anemometer.