Re-assessment of recent (2008 - 2013) surface mass balance over Dome Argus, Antarctica

  • Minghu Ding Chinese Academy of Meteorological Sciences
  • Cunde Xiao State Key Laboratory of Cryospheric Sciences, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences
  • Yuande Yang Chinese Antarctic Center of Surveying and Mapping, Wuhan University
  • Yetang Wang College of Population, Resources and Environment, Shandong Normal University
  • Chuanjin Li State Key Laboratory of Cryospheric Sciences, Cold and Arid Regions Environmental and Engineering Research Institute
  • Naiming Yuan Institute of Climate System, Chinese Academy of Meteorological Sciences
  • Guitao Shi Polar research institute of China
  • Weijun Sun College of Population, Resources and Environment, Shandong Normal University
  • Jing Ming State Key Laboratory of Cryospheric Sciences, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences
Keywords: Snow accumulation, Kunlun Station, CHINARE, digital elevation model, deep ice core sites, East Antarctic Ice Sheet

Abstract

At Dome Argus, East Antarctica, the surface mass balance (SMB) from 2008 to 2013 was evaluated using 49 stakes installed across a 30×30 km area. Spatial analysis showed that at least 12 and 20 stakes are needed to obtain reliable estimates of SMB at local scales (a few hundred square metres) and regional scales (tens of square kilometres), respectively. The estimated annual mean SMB was 22.9±5.9 kg m−2 yr−1, including a net loss by sublimation of −2.22±0.02 kg m−2 yr−1 and a mass gain by deposition of 1.37±0.01 kg m−2 yr−1. Therefore, ca. 14.3% of precipitation was modified after deposition, which should be considered when interpreting snow or ice core records produced by future drilling projects. The surface snow density and SMB in the western portion of Dome Argus are higher than in other areas, and these differences are likely related to the katabatic wind, which is strengthened by topography in this sector. A new digital elevation model (DEM) of Dome Argus was generated, confirming that both peaks of the dome can be considered as the summit of the East Antarctic Ice Sheet. Findings from this study should be valuable for validating SMB estimates obtained from regional climate models and DEMs established using remote-sensing data.

Keywords: Snow accumulation; Kunlun Station; CHINARE; digital elevation model; deep ice core sites; East Antarctic Ice Sheet.

(Published: 12 April 2016)

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Citation: Polar Research 2016, 35, 26133, http://dx.doi.org/10.3402/polar.v35.26133

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Published
2016-04-12
How to Cite
Ding, M., Xiao, C., Yang, Y., Wang, Y., Li, C., Yuan, N., Shi, G., Sun, W., & Ming, J. (2016). Re-assessment of recent (2008 - 2013) surface mass balance over Dome Argus, Antarctica. Polar Research, 35. https://doi.org/10.3402/polar.v35.26133
Section
Research/review articles