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CP | Articles | Volume 15, issue 6
Clim. Past, 15, 2031–2051, 2019
https://doi.org/10.5194/cp-15-2031-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
Clim. Past, 15, 2031–2051, 2019
https://doi.org/10.5194/cp-15-2031-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 19 Dec 2019

Research article | 19 Dec 2019

A 120 000-year record of sea ice in the North Atlantic?

Niccolò Maffezzoli et al.

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Bromine, iodine and sodium in surface snow along the 2013 Talos Dome–GV7 traverse (northern Victoria Land, East Antarctica)
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The Cryosphere, 11, 693–705, https://doi.org/10.5194/tc-11-693-2017,https://doi.org/10.5194/tc-11-693-2017, 2017
Short summary

Related subject area

Subject: Proxy Use-Development-Validation | Archive: Ice Cores | Timescale: Milankovitch
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Cited articles

Abbatt, J.: Arctic snowpack bromine release, Nat. Geosci., 6, 331–332, https://doi.org/10.1038/ngeo1805, 2013. a
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, https://doi.org/10.5194/acp-12-6237-2012, 2012. a
Ashbaugh, L. L., Malm, W. C., and Sadeh, W. Z.: A residence time probability analysis of sulfur concentrations at Grand Canyon National Park, Atmos. Environ., 19, 1263–1270, 1985. a
Barrie, L., Bottenheim, J., Schnell, R., Crutzen, P., and Rasmussen, R.: Ozone destruction and photochemical reactions at polar sunrise in the lower Arctic atmosphere, Nature, 334, 138–141, 1988. a
Belt, S. T. and Müller, J.: The Arctic sea ice biomarker IP 25: a review of current understanding, recommendations for future research and applications in palaeo sea ice reconstructions, Quaternary Sci. Rev., 79, 9–25, 2013. a
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Short summary
This study provides the first ice-core-based history of sea ice in the North Atlantic Ocean, reaching 120 000 years back in time. This record was obtained from bromine and sodium measurements in the RECAP ice core, drilled in east Greenland. We found that, during the last deglaciation, sea ice started to melt ~ 17 500 years ago. Over the 120 000 years of the last glacial cycle, sea ice extent was maximal during MIS2, while minimum sea ice extent exists for the Holocene.
This study provides the first ice-core-based history of sea ice in the North Atlantic Ocean,...
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