On the Impact of HO2-H2O Complexes in the Marine Boundary Layer: A Possible Sink for HO2

Alexander Thomas Archibald；Kenichi Tonokura；Masahiro Kawasaki；Carl John Percival；Dudley Edmund Shallcross

HO2-H2O complexes ； Master chemical mechanism ； CRI mechanism ； Marine boundary layer ； Criegee biradicals

Terrestrial, Atmospheric and Oceanic Sciences

22卷1期（2011 / 02 / 01）

71 - 78

英文

The impact of the formation of HO2-H2O adducts following reaction between H2O and HO2 and subsequent reaction of this adduct on HO(subscript x), H2O2 and O3 as a function of relative humidity in the marine boundary layer has been investigated using a zero-dimensional box model. The results of simulations with different product yields for the reaction of HO2-H2O with HO2 were compared with base case data derived from current recommendations for tropospheric modelling. It is suggested that inclusion of reactions of the HO2-H2O adduct may provide a significant sink for HO2 which has so far not been considered in models of tropospheric chemistry and depending on reaction products may have a significant impact on H2O2 and O3.