Investigating discrepancies in heat, CO2 fluxes and O3 deposition velocity over maize as measured by the eddy-covariance and the aerodynamic gradient methods

► Momentum, heat, carbon dioxide fluxes and ozone deposition velocity (Vd O3), above a maize field. ► Eddy covariance (EC) and aerodynamic gradient (AG) methods were used. ► The two methods gave similar heat fluxes and similar energy balance deficit (around 20%). ► The ozone deposition velocity measured with AG was 40% larger than with EC. ► Heat and momentum fluxes increased with height above the field which can be explained by local advection.