SLTEST Instrumentation
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Several sensing capabilities are available at the SLTEST facility and these may be divided into Ground/ Tower Sensors and Remote Sensors.These along with the existing infrastructure, allow the capability to probe the atmosphere from less than 1 mm to about 4 km from the surface.
Ground and Tower based sensing equipment.
Spatially and temporally resolved hot-wire based turbulence experiments can be precisely configured on traverse mechanisms mounted on the near surface turbulence measurement platform.
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Hot-wire calibrations can be performed under the near surface turbulence measurement platform.
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Arrays of quartz thermometers (0.01 Kelvin resolution) allow accurate determination of near surface temperature gradients.
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Surface mounted meteorological stations gather wind, radiation, humidity, precipitation and temperature data throughout the year.
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A 2.4m diameter floating element drag plate provides mean surface shear stress data.
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Multi-element experimental configurations may be constructed using 3m towers. In this case, a grid of velocity, temperature and concentration sensors are to explore the behavior of near-surface plumes.
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Remote Sensing equipment.
Atmospheric surface layer velocity information is derived from an Aerovironment minisodar. This instrument measures all three components of velocity at 5m increments up to 200m from the surface.
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The Dugway Proving Ground's FM-CW Atmospheric Doppler Radar is a one-of-a-kind instrument that makes high resolution measurements of electro-magnetic wave backscatter. These data provide a very good measure of index of refraction variations/interfaces. Thus, the FM-CW radar provides valuable atmospheric structure data such as the top of the mixed layer.
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Copyright© 2001, Last Updated 08/15/01