TY - JOUR A1 - Popa, M. E. A1 - Vollmer, M. K. A1 - Jordan, A. A1 - Brand, W. A. A1 - Pathirana, S. L. A1 - Rothe, M. A1 - Röckmann, T. T1 - Vehicle emissions of greenhouse gases and related tracers from a tunnel study: CO : CO2, N2O : CO2, CH4 : CO2, O2 : CO2 ratios, and the stable isotopes 13C and 18O in CO2 and CO JO - Atmos. Chem. Phys. Discuss. J1 - ACPD VL - 2013 SP - 23549 EP - 23598 Y1 - 2013/09/06 PB - Copernicus Publications SN - 1680-7375 UR - https://acp.copernicus.org/preprints/13/23549/2013/ L1 - https://acp.copernicus.org/preprints/13/23549/2013/acpd-13-23549-2013.pdf DO - 10.5194/acpd-13-23549-2013 ER -