Author(s)

Stefan Fickert, Jon Adams, Geert Moortgat and John Crowley

Abstract

Release of Br% and BrCl by Heterogeneous Reactions of HOBr on Sea-Salt Aerosol A contribution to subproject CMD Stefan Fickert, Jon Adams, Geert Moortgat and John Crowley Max-Planck-Institute Fur Chemie, Division of Atmospheric Chemistry, D-55020 Mainz, Germany Introduction The presence of halogens in the remote marine boundary layer (MBL) is documented by observations of NMHC and tetrachloroethylene ^CL*) removal over the western and central Pacific (implying the presence of chlorine atoms), measurements of readily photolysed organo iodine species, and of severe episodal ozone destruction in the arctic and Antarctic troposphere which is firmly correlated with the presence of bromine. Several tens of ppt of BrO have been observed in the Arctic troposphere (Hausmann and Platt, 1994), implicating this species as a key player in the complex chemistry that leads to Os destruc

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