Mass change of the Antarctic ice sheet inferred from ICESat and CryoSat-2

ZHANG Baojun; WANG Zemin; AN Jiachun; LIU Yanxia

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Mass change of the Antarctic ice sheet inferred from ICESat and CryoSat-2

机译：从ICESat和CryoSat-2推断南极冰盖的质量变化

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This study examined the mass change of the Antarctic ice sheet (AIS) based on ICESat and CryoSat-2 observations. We estimated the AIS exhibited mass losses of ?101±15 Gt·a?1during the ICESat period (Sept–Nov 2003 to Sept–Oct 2009) and?186±55 Gt·a?1during the CryoSat-2 period (Jan 2011 to Dec 2015). Mass losses occurred mainly in the sectors of the Amundsen and Bellingshausen seas. Benefitting from the 30-d subcycle of CryoSat-2, we obtained monthly estimates of mass evolution. Considerable annual variations were observed in the mass evolution sequences and the climatological monthly mass evolution. Seasonal mass evolutions in the sectors of the Bellingshausen and Amundsen seas were found most representative of the annual variation. The geographical distribution characteristics of interannual AIS mass evolution were revealed by the annual average mass evolution sequences. During Jan 2011 to Dec 2015, the ice sheets in the sectors of the Bellingshausen and Amundsen seas, and the Totten Glacier, experienced increasingly rapid areal mass loss. An area of mass gain with a moderate rate of increase was found between Dronning Maud Land and Enderby Land. Rapid mass accumulation has occurred in a limited area of the Kamb Ice Stream.

机译：这项研究基于ICESat和CryoSat-2观测资料研究了南极冰盖（AIS）的质量变化。我们估计AIS在ICES期间（2003年11月至2003年9月至2009年10月）的质量损失为101±15 Gt·a-1，而在CryoSat-2期间（2011年1月至2011年1月）的质量损失为186±55 Gt·a-1。 2015年12月）。大量损失主要发生在阿蒙森和贝林斯豪森海域。受益于CryoSat-2的30天子循环，我们获得了质量演变的每月估算值。在质量演化序列和气候月度质量演化中观察到相当大的年度变化。发现贝灵斯豪森海域和阿蒙森海域的季节性质量演变最能代表年度变化。年平均质量演化序列揭示了年际AIS质量演化的地理分布特征。在2011年1月至2015年12月期间，贝灵斯豪森和阿蒙森海域以及托特冰川的冰盖面积迅速减少。在Dronning Maud土地和Enderby土地之间发现了一个质量增长适度的区域。在坎布冰河的有限区域中发生了快速的质量积累。

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来源
《极地科学进展(英文版)》 |2017年第3期|185-195|共11页
作者
ZHANG Baojun; WANG Zemin; AN Jiachun; LIU Yanxia;
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Chinese Antarctic Center of Surveying and Mapping, Wuhan University, Wuhan 430079, China;

Chinese Antarctic Center of Surveying and Mapping, Wuhan University, Wuhan 430079, China;

Chinese Antarctic Center of Surveying and Mapping, Wuhan University, Wuhan 430079, China;

Wuhan Geomatics Institute, Wuhan 430022, China;

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收录信息中国科技论文与引文数据库(CSTPCD);
原文格式 PDF
正文语种 eng
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Mass change of the Antarctic ice sheet inferred from ICESat and CryoSat-2

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