New study reveals uncertainties in measuring heat flux over cropland.
Sensible heat flux is important for understanding how heat moves between the ground and the air. Scientists compared two methods for measuring this heat over cropland: Large Aperture Scintillometer (LAS) and Eddy Covariance (EC). They found that both methods show similar trends in heat flux, especially during strong exchanges. However, there are still differences in the measurements, with LAS sometimes showing higher or lower values than EC. The researchers also identified factors like wind speed and surface characteristics that can affect the accuracy of LAS measurements. Overall, the study highlights the challenges and uncertainties in measuring sensible heat flux over cropland using different techniques.