Articles | Volume 14, issue 11
Research article
11 Jun 2014
Research article |  | 11 Jun 2014

WAIS Divide ice core suggests sustained changes in the atmospheric formation pathways of sulfate and nitrate since the 19th century in the extratropical Southern Hemisphere

E. D. Sofen, B. Alexander, E. J. Steig, M. H. Thiemens, S. A. Kunasek, H. M. Amos, A. J. Schauer, M. G. Hastings, J. Bautista, T. L. Jackson, L. E. Vogel, J. R. McConnell, D. R. Pasteris, and E. S. Saltzman

Related authors

Atmospheric measurements of the terrestrial O2 : CO2 exchange ratio of a midlatitude forest
Mark O. Battle, J. William Munger, Margaret Conley, Eric Sofen, Rebecca Perry, Ryan Hart, Zane Davis, Jacob Scheckman, Jayme Woogerd, Karina Graeter, Samuel Seekins, Sasha David, and John Carpenter
Atmos. Chem. Phys., 19, 8687–8701,,, 2019
Short summary
Spectral analysis of atmospheric composition: application to surface ozone model–measurement comparisons
Dene R. Bowdalo, Mathew J. Evans, and Eric D. Sofen
Atmos. Chem. Phys., 16, 8295–8308,,, 2016
Short summary
The impact of snow nitrate photolysis on boundary layer chemistry and the recycling and redistribution of reactive nitrogen across Antarctica and Greenland in a global chemical transport model
Maria Zatko, Lei Geng, Becky Alexander, Eric Sofen, and Katarina Klein
Atmos. Chem. Phys., 16, 2819–2842,,, 2016
Short summary
Gridded global surface ozone metrics for atmospheric chemistry model evaluation
E. D. Sofen, D. Bowdalo, M. J. Evans, F. Apadula, P. Bonasoni, M. Cupeiro, R. Ellul, I. E. Galbally, R. Girgzdiene, S. Luppo, M. Mimouni, A. C. Nahas, M. Saliba, and K. Tørseth
Earth Syst. Sci. Data, 8, 41–59,,, 2016
Short summary
How to most effectively expand the global surface ozone observing network
E. D. Sofen, D. Bowdalo, and M. J. Evans
Atmos. Chem. Phys., 16, 1445–1457,,, 2016
Short summary

Related subject area

Subject: Isotopes | Research Activity: Field Measurements | Altitude Range: Troposphere | Science Focus: Chemistry (chemical composition and reactions)
A seasonal analysis of aerosol NO3 sources and NOx oxidation pathways in the Southern Ocean marine boundary layer
Jessica M. Burger, Emily Joyce, Meredith G. Hastings, Kurt A. M. Spence, and Katye E. Altieri
Atmos. Chem. Phys., 23, 5605–5622,,, 2023
Short summary
Nitrate chemistry in the northeast US – Part 1: Nitrogen isotope seasonality tracks nitrate formation chemistry
Claire Bekker, Wendell W. Walters, Lee T. Murray, and Meredith G. Hastings
Atmos. Chem. Phys., 23, 4185–4201,,, 2023
Short summary
Nitrate chemistry in the northeast US – Part 2: Oxygen isotopes reveal differences in particulate and gas-phase formation
Heejeong Kim, Wendell W. Walters, Claire Bekker, Lee T. Murray, and Meredith G. Hastings
Atmos. Chem. Phys., 23, 4203–4219,,, 2023
Short summary
Photolytic modification of seasonal nitrate isotope cycles in East Antarctica
Pete D. Akers, Joël Savarino, Nicolas Caillon, Olivier Magand, and Emmanuel Le Meur
Atmos. Chem. Phys., 22, 15637–15657,,, 2022
Short summary
Atmospheric methane isotopes identify inventory knowledge gaps in the Surat Basin, Australia, coal seam gas and agricultural regions
Bryce F. J. Kelly, Xinyi Lu, Stephen J. Harris, Bruno G. Neininger, Jorg M. Hacker, Stefan Schwietzke, Rebecca E. Fisher, James L. France, Euan G. Nisbet, David Lowry, Carina van der Veen, Malika Menoud, and Thomas Röckmann
Atmos. Chem. Phys., 22, 15527–15558,,, 2022
Short summary

Cited articles

Alexander, B., Savarino J., Barkov, N. I., Delmas, R. J., and Thiemens, M. H.: Climate driven changes in the oxidation pathways of atmospheric sulfur, Geophys. Res. Lett., 29, 1685,, 2002.
Alexander, B., Thiemens, M. H., Farquhar, J., Kaufman, A. J., Savarino, J., Delmas, R. J.: East Antarctic ice core sulfur isotope measurements over a complete glacial-interglacial cycle, J. Geopys. Res., 108, 4786,, 2003.
Alexander, B., Savarino J., Kreutz, K. J., and Thiemens, M. H.: Impact of preindustrial biomass-burning emissions on the oxidation pathways of tropospheric sulfur and nitrogen, J. Geophys. Res., 109, D08303,, 2004.
Alexander, B., Park, R. J., Jacob, D. J., and Gong, S.: Transition metal-catalyzed oxidation of atmospheric sulfur: global implications for the sulfur budget, J. Geophys. Res., 114, D02309,, 2009.
Alexander, B., Allman, D. J., Amos, H. M., Fairlie, T. D., Dachs, J., Hegg, D. A., and Sletten, R. S.: Isotopic constraints on the formation pathways of sulfate aerosol in the marine boundary layer of the subtropical northeast Atlantic Ocean, J. Geophys. Res., 117, D06304,, 2012.
Final-revised paper