Articles | Volume 20, issue 6
Atmos. Chem. Phys., 20, 3333–3355, 2020
https://doi.org/10.5194/acp-20-3333-2020

Special issue: Simulation chambers as tools in atmospheric research (AMT/ACP/GMD...

Special issue: The Modular Earth Submodel System (MESSy) (ACP/GMD inter-journal...

Atmos. Chem. Phys., 20, 3333–3355, 2020
https://doi.org/10.5194/acp-20-3333-2020
Research article
20 Mar 2020
Research article | 20 Mar 2020

Importance of isomerization reactions for OH radical regeneration from the photo-oxidation of isoprene investigated in the atmospheric simulation chamber SAPHIR

Anna Novelli et al.

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Short summary
Experimental evidence from a simulation chamber study shows that the regeneration efficiency of the hydroxyl radical is maintained globally at values higher than 0.5 for a wide range of nitrogen oxide concentrations as a result of isomerizations of peroxy radicals originating from the OH oxidation of isoprene. The available models were tested, and suggestions on how to improve their ability to reproduce the measured radical and oxygenated volatile organic compound concentrations are provided.
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