Physical Sciences and Mathematics Commons^™

Coupled Evolution Of Brox-Clox-Hox-Nox Chemistry During Bromine-Catalyzed Ozone Depletion Events In The Arctic Boundary Layer, M J. Evans, D J. Jacob, E L. Atlas, C A. Cantrell, Fred Eisele, F Flocke, A Fried, R L. Mauldin, Brian Ridley, B Wert, R. Talbot, D R. Blake, B J. Heikes, J Snow, J Walega, Andrew Weinheimer, Jack E. Dibb

Earth Sciences

Extensive chemical characterization of ozone (O₃) depletion events in the Arctic boundary layer during the TOPSE aircraft mission in March–May 2000 enables analysis of the coupled chemical evolution of bromine (BrO_x), chlorine (ClO_x), hydrogen oxide (HO_x) and nitrogen oxide (NO_x) radicals during these events. We project the TOPSE observations onto an O₃ chemical coordinate to construct a chronology of radical chemistry during O₃ depletion events, and we compare this chronology to results from a photochemical model simulation. Comparison of observed trends in ethyne (oxidized by Br) and ethane …