Fig. 5. Hourly averages of net radiation (R_n), latent heat (LE), and sensible heat (S) fluxes measured (symbols ± SE) and simulated (lines) from 24 to 28 Apr. 1996 (DOY 115–119) under 363 µmol mol^-1 CO₂ and (a) 35 g N m^-2 and (b) 7 g N m^-2 fertilization. Negative values represent upward fluxes

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