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Climate of the Past An interactive open-access journal of the European Geosciences Union
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Volume 13, issue 1
Clim. Past, 13, 39–59, 2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue: International Partnerships in Ice Core Sciences (IPICS) Second...

Clim. Past, 13, 39–59, 2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 16 Jan 2017

Research article | 16 Jan 2017

Sea ice and pollution-modulated changes in Greenland ice core methanesulfonate and bromine

Olivia J. Maselli et al.

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Local artifacts in ice core methane records caused by layered bubble trapping and in situ production: a multi-site investigation
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Cited articles

Abbatt, J., Oldridge, N., Symington, A., Chukalovskiy, V., McWhinney, R. D., Sjostedt, S., and Cox, R. A.: Release of gas-phase halogens by photolytic generation of OH in frozen halide-nitrate solutions: an active halogen formation mechanism?, J. Phys. Chem. A, 114, 6527–6533,, 2010.
Abbatt, J. P. D.: Interactions of HBr, HCl, and HOBr With Supercooled Sulfuric- Acid-Solutions of Stratospheric Composition, J. Geophys. Res., 100, 14009–14017, 1995.
Abbatt, J. P. D., Thomas, J. L., Abrahamsson, K., Boxe, C., Granfors, A., Jones, A. E., King, M. D., Saiz-Lopez, A., Shepson, P. B., Sodeau, J., Toohey, D. W., Toubin, C., von Glasow, R., Wren, S. N., and Yang, X.: Halogen activation via interactions with environmental ice and snow in the polar lower troposphere and other regions, Atmos. Chem. Phys., 12, 6237–6271,, 2012.
Abram, N. J., Wolff, E. W., and Curran, M. A. J.: A review of sea ice proxy information from polar ice cores, Quaternary Sci. Rev., 79, 168–183,, 2013.
Appenzeller, C., Schwander, J., Sommer, S., and Stocker, T. F.: The North Atlantic Oscillation and its imprint on precipitation and ice accumulation in Greenland, Geophys. Res. Lett., 25, 1939,, 1998.
Publications Copernicus
Short summary
We analysed two Greenland ice cores for methanesulfonate (MSA) and bromine (Br) and concluded that both species are suitable proxies for local sea ice conditions. Interpretation of the records reveals that there have been sharp declines in sea ice in these areas in the past 250 years. However, at both sites the Br record deviates from MSA during the industrial period, raising questions about the value of Br as a sea ice proxy during recent periods of high, industrial, atmospheric acid pollution.
We analysed two Greenland ice cores for methanesulfonate (MSA) and bromine (Br) and concluded...