Earth Syst. Sci. Data Discuss., 3, 195-230, 2010
© Author(s) 2010. This work is distributed
under the Creative Commons Attribution 3.0 License.
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This discussion paper has been under review for the journal Earth System Science Data (ESSD). Please refer to the corresponding final paper in ESSD.
An improved Antarctic dataset for high resolution numerical ice sheet models (ALBMAP v1)
A. M. Le Brocq1,2, A. J. Payne3, and A. Vieli1
1Department of Geography, Durham University, Durham, UK
2School of Geography, University of Exeter, Exeter, UK
3Bristol Glaciology Centre, School of Geographical Sciences, University of Bristol, Bristol, UK

Abstract. The dataset described in this paper (ALBMAP) has been created for the purposes of high-resolution numerical ice sheet modelling of the Antarctic Ice Sheet. It brings together data on the ice sheet configuration (e.g. ice surface and ice thickness) and boundary conditions, such as the surface air temperature, accumulation and geothermal heat flux. The ice thickness and basal topography is based on the BEDMAP dataset (Lythe et al., 2001), however, there are a number of inconsistencies within BEDMAP and, since its release, more data has become available. The dataset described here addresses these inconsistencies, including some novel interpolation schemes for sub ice-shelf cavities, and incorporates some major new datasets. The inclusion of new datasets is not exhaustive, this considerable task is left for the next release of BEDMAP, however, the data and procedure documented here provides another step forward and demonstrates the issues that need addressing in a continental scale dataset useful for high resolution ice sheet modelling. The dataset provides an initial condition that is as close as possible to present-day ice sheet configuration, aiding modelling of the response of the Antarctic Ice Sheet to various forcings, which are, at present, not fully understood.

Citation: Le Brocq, A. M., Payne, A. J., and Vieli, A.: An improved Antarctic dataset for high resolution numerical ice sheet models (ALBMAP v1), Earth Syst. Sci. Data Discuss., 3, 195-230, doi:10.5194/essdd-3-195-2010, 2010.
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