Evaluation of Six Satellite-Based Terrestrial Latent Heat Flux Products in the Vegetation Dominated Haihe River Basin of North China

In this study, six satellite-based terrestrial latent heat flux (LE) products were evaluated in the vegetation dominated Haihe River basin of North China. These LE include Global Land Surface Satellite (GLASS) product, FLUXCOM Penman-Monteith-Leuning V2 (PML_V2) Evaporation Amsterdam Model datasets (GLEAM) Breathing Earth System Simulator (BESS) and Moderate Resolution Imaging Spectroradiometer (MODIS) (MOD16) product. Eddy covariance (EC) data collected from tower sites water balance method derived evapotranspiration (WBET) used to evaluate these at site scales. The results indicated that all able capture seasonal cycle comparison EC observations. At scale, GLASS product showed highest coefficients determination (R2) (0.58, p < 0.01) lowest root mean square error (RMSE) (28.2 W/m2), followed by PML products. estimates provided comparable performance (R2 = 0.79, RMSE 18.8 mm) against WBET, compared with other Additionally, there was similar spatiotemporal variability estimated This study provides a vital basis for choosing assess regional budget.