Articles | Volume 17, issue 5
https://doi.org/10.5194/acp-17-3769-2017
https://doi.org/10.5194/acp-17-3769-2017
Research article
 | 
17 Mar 2017
Research article |  | 17 Mar 2017

Global sensitivity analysis of the GEOS-Chem chemical transport model: ozone and hydrogen oxides during ARCTAS (2008)

Kenneth E. Christian, William H. Brune, and Jingqiu Mao

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Short summary
To better understand the sources of uncertainty in modeled Arctic tropospheric oxidants, we created and analyzed an ensemble of chemical transport model runs with inputs perturbed according to their respective uncertainties. Ozone and OH were most sensitive to various emissions and chemical factors. HO2 was overwhelmingly sensitive to aerosol particle uptake. When compared to airborne measurements, better agreement was found when the model used lower aerosol particle uptake rates.
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