This dataset provides a 298 year (1712-2010) annual snow accumulation record from the Bryan Coast (BC11) ice core. The 140 m core was drilled on the Bryan Coast in Ellsworth Land, West Antarctica, during the austral summer 2010/11. The record was measured using the summer peak in non sea salt (nss) SO4, in approximately January to December. Snow accumulation is converted to meters of water equivalent (weq - m) based on measured density profile and correcting for thinning using the Nye model, assuming vertical strain rate. Samples were measured at 5 cm resolution, corresponding to approximately eight samples per year.
Funding was provided by the NERC grant NE/J020710/1.
Ice core, Isotope, Snow accumulation, West Antarctica
Thomas, E. (2017). Snow accumulation from the Bryan Coast ice core (BC11), Ellsworth Land, West Antarctica (Version None) [Data set]. Polar Data Centre; British Antarctic Survey, Natural Environment Research Council; Cambridge, CB3 0ET, UK.. https://doi.org/10.5285/6feac38a-5847-46f9-84e4-e7e9d291f935
This data is governed by the NERC data policy http://www.nerc.ac.uk/research/sites/data/policy/ and supplied under Open Government Licence v.3 http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/.
Thomas, E. R., J. S. Hosking, R. R. Tuckwell, R. A. Warren, and E. C. Ludlow (2015), Twentieth century increase in snowfall in coastal West Antarctica, Geophys. Res. Lett., 42, 9387-9393, doi:10.1002/2015GL065750.
Thomas, E. R., and T. J. Bracegirdle (2015), Precipitation pathways for five new ice core sites in Ellsworth Land, West Antarctica, Climate Dynamics, 44 (7-8), 2067-2078, doi:10.1007/s00382-014-2213-6
Dating method: Annual layer counting - checked using volcanic tie-points (SO4, ECM).
See the referenced publication for further information.