Surface and boundary layer exchanges of volatile organic compounds, nitrogen oxides and ozone during the GABRIEL campaign - Ganzeveld, L.; Eerdekens, G.; Feig, G.; Fischer, H.; Harder, H.; Königstedt, R.; Kubistin, D.; Martinez, M.; Meixner, F. X.; Scheeren, H. A.; Sinha, V.; Taraborrelli, D.; et al. (Atmos. Chem. Phys., 2008)