Continuous Monitoring of Ice Motion and Discharge of Antarctic and Greenland Ice Sheets and Outlet Glaciers by Sentinel-1 A & B
Continuous Monitoring of Ice Motion and Discharge of Antarctic and Greenland Ice Sheets and Outlet Glaciers by Sentinel-1 A & B
复制标题
Sentinel-1 A 连续监测南极和格陵兰冰盖和出口冰川的冰运动和流量
DOI：
10.1109/igarss47720.2021.9553514
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
H. Rott
中科院分区：
文献类型：
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作者：
T. Nagler;J. Wuite;Ludivine Libert;M. Hetzenecker;Lars Keuris;H. Rott
Sentinel-1极地采集计划提供了对格陵兰冰盖边缘、南极洲关键区域和其他极地冰块的几乎不间断的观测。因此，卫星星座改变了极地地区卫星地球观测的景观，为实际监测包括冰速和冰川流量在内的关键气候变量提供了极好的机会。根据哨兵-1号合成孔径雷达图像，生成了涵盖整个使命期间的极地冰速图档案。冰速度图，加上冰厚度和其他EO数据集，构成了在次月到多年时间尺度上推导冰流量、流量波动和趋势的基础，为冰动力学和气候建模提供了关键投入。我们的研究结果强调了长期全面监测极地冰群的价值，这对于预测它们对持续气候和海洋变暖的反应至关重要。
The Sentinel-1 acquisition planning for polar regions provides almost uninterrupted observations of the Greenland Ice Sheet margin, key regions in Antarctica and other polar ice masses. The satellite constellation has thereby changed the landscape for satellite Earth observation (EO) in the polar regions, providing excellent opportunities for operational monitoring of key climate variables including ice velocity and glacier discharge. Based on Sentinel-1 SAR imagery, an archive of ice velocity maps covering the polar regions has been generated, encompassing the entire mission duration. The ice velocity maps, complemented with ice thickness and other EO datasets, form the basis for deriving ice flow, discharge fluctuations and trends at sub-monthly to multi-annual time scales, providing key input for ice dynamic and climate modelling. Our results underscore the value of long-term comprehensive monitoring of the polar ice masses, which is vital to gain insight for predicting their response to ongoing climate and ocean warming.