92nd American Meteorological Society Annual Meeting (January 22-26, 2012)

Thursday, 26 January 2012: 11:30 AM
Evaluating Data Quality and Performance Characteristics of An Ultrasonic Anemometer Versus Propeller Anemometers in Subarctic Western Alaska
Room 239 (New Orleans Convention Center )
Cyrena-Marie Druse, McVehil-Monnett Associates, Englewood, CO

In November 2008, a heated ultrasonic anemometer was collocated with an existing propeller and vane wind monitor and a vertical wind speed propeller anemometer in southwestern Alaska. The goal of the collocated install was to obtain higher data recoveries though the winters of this remote location where rime ice often causes the propeller type anemometers to fail, significantly reducing data recoveries. Data comparisons were conducted to ensure ultrasonic data quality and accuracy would match those of the propeller instrumentation. The effects of extremes in meteorological conditions on the operation of the ultrasonic and propeller anemometers were evaluated, as well as the resultant meteorological data quality and data recovery rates. Finally, data comparisons between the ultrasonic and propeller anemometers were also evaluated for biases and errors.

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