Physics
Scientific paper
Sep 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999georl..26.2857s&link_type=abstract
Geophysical Research Letters, Volume 26, Issue 18, p. 2857-2860
Physics
36
Atmospheric Composition And Structure: Aerosols And Particles, Atmospheric Composition And Structure: Chemical Kinetic And Photochemical Properties, Atmospheric Composition And Structure: Constituent Sources And Sinks, Atmospheric Composition And Structure: Troposphere-Composition And Chemistry
Scientific paper
Laboratory studies have shown that bromine nitrate (BrNO3) reacts on sulfuric acid and on ice particles. Here we investigate the potential role of BrNO3 in the marine boundary layer (mbl) assuming that it reacts on sea-salt particles as well. Using the chemical box model MOCCA we find that heterogeneous reactions of BrNO3 on aerosol particles could affect the chemistry in four major ways: 1) They increase loss of NOx(=NO+NO2) from the gas phase; 2) They accelerate loss of bromide and chloride from sea-salt aerosols. This dehalogenation occurs without the consumption of aerosol acidity; 3) The resulting loss of NOx and the increase of gas-phase bromine species both lead to O3 destruction; 4) The resulting increase of reactive chlorine species affects gas-phase hydrocarbons as well as S(IV) oxidation by HOCl in sea-salt aerosols.
Crutzen Paul J.
Rudich Yinon
Sander Rolf
von Glasow Roland
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