PT Journal AU Keber, T Bönisch, H Hartick, C Hauck, M Lefrancois, F Obersteiner, F Ringsdorf, A Schohl, N Schuck, T Hossaini, R Graf, P Jöckel, P Engel, A TI Bromine from short-lived source gases in the extratropical northern hemispheric upper troposphere and lower stratosphere (UTLS) SO Atmospheric chemistry and physics PY 2020 BP 4105 EP 4132 VL 20 IS 7 DI 10.5194/acp-20-4105-2020 LA english ER