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

Polar research

Cunde Xiao¹  Yetang Wang¹  Chuanjin Li²  Naiming Yuan³  Minghu Ding⁴  Yuande Yang⁴  Weijun Sun⁴  Jing Ming⁵  Guitao Shi⁶ 

[1] State Key Laboratory of Cryospheric Sciences Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China;Chinese Antarctic Center of Surveying and Mapping Wuhan University, 129 Luoyu Road, Wuhan 430079, China;College of Population Resources and Environment, Shandong Normal University, Jinan 250014, China;Institute of Climate System Chinese Academy of Meteorological Sciences, Beijing 100081, China;Polar Research Institute of China, Shanghai 200136, China;State Key Laboratory of Cryospheric Sciences Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China;State Key Laboratory of Cryospheric Sciences Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, ChinaCorrespondence

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

DOI  :  10.3402/polar.v35.26133

学科分类：自然科学（综合）

来源: Co-Action Publishing

【 摘 要 】

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 ...

【 授权许可】

CC BY-NC