Articles | Volume 17, issue 5
Atmos. Chem. Phys., 17, 3769–3784, 2017
Atmos. Chem. Phys., 17, 3769–3784, 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 et al.

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Cited articles

Atkinson, R., Baulch, D. L., Cox, R. A., Crowley, J. N., Hampson, R. F., Hynes, R. G., Jenkin, M. E., Rossi, M. J., and Troe, J.: Evaluated kinetic and photochemical data for atmospheric chemistry: Volume III – gas phase reactions of inorganic halogens, Atmos. Chem. Phys., 7, 981–1191,, 2007.
Auvray, M. and Bey, I.: Long-range transport to Europe: Seasonal variations and implications for the European ozone budget, J. Geophys. Res., 110, D11303,, 2005.
Barrie, L. A., Hoff, R. M., and Daggupaty, S. M.: The influence of mid-latitudinal pollution sources on haze in the Canadian Arctic, Atmos. Environ., 15, 1407–1419,, 1981.
Barrie, L. A., Bottenheim, J. W., Schnell, R. C., Crutzen, P. J., and Rasmussen, R. A.: Ozone destruction and photochemical reactions at polar sunrise in the lower Arctic atmosphere, Nature, 334, 138–141,, 1988.
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.
Final-revised paper