Both direct and indirect wind was found to decrease IRT measurements
obtained from the cattle. In automated systems that
are designed to set off an alarm if the IRT eye temperature of cattle
exceeds a temperature threshold, the presence of wind could contribute
to a false negative by decreasing the IRT temperature. This
would result in cattle with potentially elevated body temperature
going undetected by the IRT system if they were subjected to this
effect. IRT measurements need to be taken in a setting that is
shielded from air flow as much as possible.