Resultant , or globe temperature
The Resultant Temperature, also called the Globe Temperature, can be used to give a more representative measure of temperature comfort than air temperature alone.
Globe temperature can be expressed as
tg = 0.5 tmr + 0.5 ta (1)
tg = globe (resultant) temperature (oC, oF)
tmr = mean radiation temperature (oC, oF)
ta = air temperature (oC, oF)
Globe temperature can be measured with acceptable results in centre of a black globe with diameter 25 to 150 mm.