System for Observation of Halogenated Greenhouse Gases in Europe (SOGE): Observations from four European stations, model studies and expansion of the network.

Stordal, F.; Lunder, C.; Hermansen, O.; Schmidbauer, N.; Simmonds, P.G.; Greally, B.; O'Doherty, S.; McCulloch, A.; Reimann, S.; Stemmler, K.; Folini, D.; Vollmer, M.K.; Maione, M.; Arduini, J.; Mahieu, E.; Notholt, J.; Ellingsen, K.; Isaksen, I.S.A.; Manning, A.