Articles | Volume 16, issue 19
https://doi.org/10.5194/acp-16-12477-2016
https://doi.org/10.5194/acp-16-12477-2016
Research article
 | 
05 Oct 2016
Research article |  | 05 Oct 2016

Global tropospheric hydroxyl distribution, budget and reactivity

Jos Lelieveld, Sergey Gromov, Andrea Pozzer, and Domenico Taraborrelli

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Cited articles

Butler, T. M., Lawrence, M. G., Taraborrelli, D., and Lelieveld, J.: Tagged ozone production potential (TOPP) of volatile organic compounds, Atmos. Environ., 45, 4082–4090, 2011.
Cabrera-Perez, D., Taraborrelli, D., Sander, R., and Pozzer, A.: Global atmospheric budget of simple monocyclic aromatic compounds, Atmos. Chem. Phys., 16, 6931–6947, https://doi.org/10.5194/acp-16-6931-2016, 2016.
Christoudias, T. and Lelieveld, J.: Modelling the global atmospheric transport and deposition of radionuclides from the Fukushima Dai-ichi nuclear accident, Atmos. Chem. Phys., 13, 1425–1438, https://doi.org/10.5194/acp-13-1425-2013, 2013.
Crounse, J. D., Knap, H. C., Ørnsø, K. B., Jørgensen, S., Paulot, F., Kjaergaard, G. G., and Wennberg, P. O.: Atmospheric fate of methacrolein. 1. Peroxy radical isomerization following addition of OH and O2, J. Phys. Chem. A, 116, 5756–5762, 2012.
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Short summary
The self-cleaning capacity of the atmosphere is controlled by hydroxyl (OH) radicals in the troposphere. There are primary and secondary OH sources, the former through the photodissociation of ozone, the latter through OH recycling. We used a global model, showing that secondary sources are larger than assumed previously, which buffers OH. Complementary OH formation mechanisms in pristine and polluted environments, connected through transport of ozone, can maintain stable global OH levels.
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