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Title: Dating Antarctic ice cores using high-temporal resolution black carbon records
Authors: Edwards, R
Vallelonga, P
McConnell, JR
Bertler, NAN
Curran, MAJ
Sigil, M
Fudge, TJ
Anschuetz, H
Neff, PD
Emanuelsson, D
Bisiaux, M
Goodwin, D
Smith, AM
Taylor, KC
Moy, AD
Fetieng, W
Ellis, A
Keywords: Age estimation
Antarctic regions
Drill cores
Southern Hemisphere
Issue Date: 7-Mar-2016
Publisher: Antarctic Climate and Ecosystems Cooperative Research Centre
Citation: Edwards, R., Vallelonga, P., McConnell, J. R., Bertler, N. A. N., Curran, M. A. J., Sigil, M., Fudge, T. J., Anschuetz, H., Neff, P. D., Emanuelsson, D., Bisiaus, M., Goodwin, D., Smith, A., Taylor, K. C., Moy, A., Fetieng, W., & Ellis, A. (2016). Dating Antarctic ice cores using high-temporal resolution black carbon records. Paper presented at the IPICS 2016, International Partnerships in Ice Core Sciences, Second Open Science Conference, 7-11 March 2016, Hobart, Tasmania.
Abstract: Black carbon aerosols (BC) emitted by fires in the Southern Hemisphere (SH) are transported to Antarctica and preserved in the Antarctic ice sheet. Recent efforts to develop ice core records of BC deposition to Antarctica show variability in BC over a broad range of time scales. The ~ monthly-resolution BC record from the WAIS divide deep ice core displayed strong seasonal variability in modern sections of the record consistent with the timing of SH biomass burning. The record was subsequently used as an annual layer dating proxy in conjunction with other chemical species. If the emissions and transport of BC to Antarctica are stable over long periods of time it may be useful as an annual layer proxy at sites other than WAIS. To date, a rigorous comparison of Antarctic ice core BC seasonality from different locations have not been conducted. Here we present a comparison of BC ice core data from the top sections of the WAIS divide deep core, the Roosevelt Island RICE core, and the Law Dome DSS1213 core. The RICE and Law Dome sites are separated from WAIS by large distances and experience different atmospheric circulation and climate regimes. A detailed description of the data uncertainties and its use in annual layer counting will be discussed.
Gov't Doc #: 9607
Appears in Collections:Conference Publications

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