Oceanography and Atmospheric Sciences and Meteorology Commons^™

In Situ Checks Of Sonic Anemometer Temperature Calibration, David Cook, Michael Negale

Michael Negale

The temperature calibration of the Gill Instruments WindMasterPro sonic anemometer used in the SGP ACRF ECOR systems is a curve, but is approximated as a linear fit for field use. The linear fit is only applied to the calculation of sensible heat flux and not to the reported temperature, and results in an underestimate of sensible heat flux during cold ambient temperatures and an overestimate during hot ambient temperatures. In situ calibrations performed using five years of ARM SGP ACRF data reveal how poorly the temperature is measured by the ECOR using the linear fit. Linear and non-linear in situ …