Development of Radio-Anemometer Using Three-Compact Globe Thermometers

Abstract

We developed a new sensing technology for wind velocity and short/long wave radiation fluxes (Globe radio-anemometer). The technology is on the basis of the heat budget equations of three compact globe thermometers (GT), namely; a black GT (BGT), a white GT (WGT), and a black GT with a heat source inside (BGTH). The globe anemometer uses BGT and BGTH, and the globe radiometer does BGT and WGT. Three GTs used are 12 mm in diameter and 0.3 mm in thickness, much smaller than the standard GT. The root mean square of the error of the sensors were 0.24 m s -1 for wind velocity, 21.3 W m -2 for short wave radiation flux, and 12.3 W m -2 for long wave radiation flux with 1-minute-averaged data.