The study analyzed differences in sensible heat flux measured by two different methods over the Loess Plateau. They found that the variation in heat flux was influenced by factors like net radiation, wind direction, wind speed, and surface complexity. Net radiation was the main driver of heat flux, with higher values during the growing season. Wind direction also played a significant role, affecting how heat flux was measured. The presence of low-frequency changes in the atmosphere led to differences in heat flux measurements between the two methods. Overall, the study showed that the underlying surface and atmospheric conditions can impact how heat flux is measured over the Loess Plateau.