What does the Globe Temperature (GT) primarily measure?

The Globe Temperature (GT) is primarily used to measure the sun's radiation, which is crucial for assessing thermal comfort and heat stress in athletes and outdoor workers. The GT takes into account not only the air temperature but also the radiant heat from the sun, which can significantly affect a person's body temperature and overall heat exposure.

By incorporating the effects of solar radiation, GT provides a more comprehensive understanding of the environmental conditions affecting an individual's performance and safety during physical activities. This measure is vital in athletic training and event planning to ensure the well-being of participants, especially in outdoor settings where exposure to direct sunlight can increase the risk of heat-related illnesses.