Skip to Main content Skip to Navigation
Journal articles

Role of the BRO + HO 2 reaction in the stratospheric chemistry of bromine

Abstract : The impact of new laboratory data for the reaction BrO + HO2-> HOBr + 02 has been estimated in a one-dimensional photochemical modelling of bromine/ozone stratospheric chemistry. The reported 6 fold increase in the measured value for the rate constant of this reaction significantly increases both the HOBr mixing ratio and the global ozone depletion due to bromine compounds (the calculated ozone loss increases from 1.14% to 1.45% for a 20 ppt total bromine content). The higher rate constant makes the bromine partitioning and the ozone depletion very sensitive to the branching ratio of the potential channel forming HBr in the BrO + HO 2 reaction. The influence of the existing uncertainty in the photolysis rate of HOBr is also analysed.
Document type :
Journal articles
Complete list of metadatas

Cited literature [15 references]  Display  Hide  Download

https://hal-insu.archives-ouvertes.fr/insu-02796679
Contributor : Nathalie Pothier <>
Submitted on : Friday, June 5, 2020 - 1:58:33 PM
Last modification on : Friday, June 12, 2020 - 3:43:37 AM

File

92GL00781.pdf
Publisher files allowed on an open archive

Identifiers

Collections

Citation

Gilles Poulet, Michel Pirre, Françoise Maguin, Radiela Ramaroson, Georges Le Bras. Role of the BRO + HO 2 reaction in the stratospheric chemistry of bromine. Geophysical Research Letters, American Geophysical Union, 1992, 19 (23), pp.2305-2308. ⟨10.1029/92GL00781⟩. ⟨insu-02796679⟩

Share

Metrics

Record views

21

Files downloads

15