“…Estimation of R n is very important in the context of turbulent energy flux estimates (latent heat flux (i.e., evapotranspiration), and sensible heat flux), particularly in those studies devoted to the assessment of evapotranspiration based on remote sensing techniques (Bastiaanssen et al, 1998(Bastiaanssen et al, , 2005Allen et al, 2007;Silva et al, 2015;Elnmer et al, 2019) and those employing the Bowen ratio method, where R n (as a key component of the available energy) is crucial for the reliable calculation of latent and sensible heat fluxes (Verhoef and Campbell, 2005). Reliable values of R n are also required to check the closure of the energy balance when turbulent energy fluxes have been directly determined with the eddy covariance technique, because there may be an underestimation due to the existence of storage of heat in canopies or in the layer below the instrumentation, horizontal advection, errors in the frequency response of sensors, and regional scale heterogeneity that can cause large-scale eddies that are not readily sensed by eddy covariance systems.…”