Poster Identifying regional methane isotopic source signatures from δ13C measurements at European stations in the InGOS TNA program. Fisher, R.; Lowry, D.; Lanoisellé, M.; Zazzeri, G.; Myhre, C.L.; Aalto, T.; Haszpra, L.; Nisbet, E. Publikasjonsdetaljer Poster presented at InGOS International Scientific Conference, Utrecht, 21 to 24 September 2015.