Sea-ice-related halogen enrichment at Law Dome, coastal East Antarctica

Vallelonga, Paul; Maffezzoli, Niccolo; Moy, Andrew D.; Curran, Mark A. J.; Vance, Tessa R.; Edwards, Ross; Hughes, Gwyn; Barker, Emily; Spreen, Gunnar; Saiz-Lopez, Alfonso; Corella, J. Pablo; Cuevas, Carlos A.; Spolaor, Andrea

doi:https://doi.org/10.5194/cp-13-171-2017

Articles | Volume 13, issue 2

Clim. Past, 13, 171–184, 2017

https://doi.org/10.5194/cp-13-171-2017

© 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, 171–184, 2017

https://doi.org/10.5194/cp-13-171-2017

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

Articles | Volume 13, issue 2

Research article 27 Feb 2017

Research article | 27 Feb 2017

Sea-ice-related halogen enrichment at Law Dome, coastal East Antarctica

Paul Vallelonga et al.

Supplement

https://doi.org/10.5194/cp-13-171-2017-supplement

Data sets

Law Dome Br, Na, I (1927-2016) and sea ice (1973-2015) P. Vallelonga, N. Maffezzoli, A. D. Moy, M. A. J. Curran, T. R. Vance, R. L. Edwards, G. Hughes, E. Barker, G. Spreen, A. Saiz-Lopez, J. P. Corella, C. A. Cuevas, and A. Spolaor https://doi.org/10.1594/PANGAEA.868431

Short summary

We present a study of bromine, iodine and sodium in an ice core from Law Dome, in coastal East Antarctica. We find that bromine and iodine variability at Law Dome is correlated to changes in the area of sea ice along the Law Dome coast as observed by satellite since the early 1970s. These findings are in agreement with a previous study based on MSA and confirm a long-term trend of sea ice decrease for this sector of Antarctica over the 20th century.