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

Maselli, Olivia J.; Chellman, Nathan J.; Grieman, Mackenzie; Layman, Lawrence; McConnell, Joseph R.; Pasteris, Daniel; Rhodes, Rachael H.; Saltzman, Eric; Sigl, Michael

doi:https://doi.org/10.5194/cp-13-39-2017

Articles | Volume 13, issue 1

Clim. Past, 13, 39–59, 2017

https://doi.org/10.5194/cp-13-39-2017

© 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

https://doi.org/10.5194/cp-13-39-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 13, issue 1

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.

Supplement

https://doi.org/10.5194/cp-13-39-2017-supplement

Data sets

Tunu, Greenland 2013 ice core chemistry J. McConnell https://doi.org/10.18739/A2TM16

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.