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Fig. 5. Comparison of tower measurements of sensible heat (H), latent energy (
E), net radiation (RN), and soil heat flux (G) from the OASIS (30-min averages), SGP97 (hourly averages), and SMACEX (30-min averages) experiments with instantaneous flux predictions from the ALEXI and DisALEXI models (see Table 1). The ALEXI fluxes represent a 5-km average corresponding to the model grid cell containing the tower site, while the DisALEXI fluxes have been integrated across the flux tower footprint. Open H and E symbols indicate uncorrected measurements, while gray-filled symbols represent fluxes corrected for energy budget closure by conserving the Bowen ratio. Root mean square difference (RMSD) values were computed for all four flux components combined, using closure-corrected H and E. Latent heat fluxes associated with the bare soil site in SGP97 are highlighted with an open box.
