Overestimation and adjustment of Antarctic ice flow velocity fields reconstructed from historical satellite imagery

Li, Rongxing; Cheng, Yuan; Cui, Haotian; Xia, Menglian; Yuan, Xiaohan; Li, Zhen; Luo, Shulei; Qiao, Gang

doi:https://doi.org/10.5194/tc-16-737-2022

Articles | Volume 16, issue 2

https://doi.org/10.5194/tc-16-737-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/tc-16-737-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 16, issue 2

Research article

|

03 Mar 2022

Research article |

| 03 Mar 2022

Overestimation and adjustment of Antarctic ice flow velocity fields reconstructed from historical satellite imagery

Rongxing Li, Yuan Cheng, Haotian Cui, Menglian Xia, Xiaohan Yuan, Zhen Li, Shulei Luo, and Gang Qiao

Data sets

ITS_LIVE Regional Glacier and Ice Sheet Surface Velocities A. S. Gardner, M. A. Fahnestock, and T. A. Scambos https://its-live.jpl.nasa.gov/

Short summary

Historical velocity maps of the Antarctic ice sheet are valuable for long-term ice flow dynamics analysis. We developed an innovative method for correcting overestimations existing in historical velocity maps. The method is validated rigorously using high-quality Landsat 8 images and then successfully applied to historical velocity maps. The historical change signatures are preserved and can be used for assessing the impact of long-term global climate changes on the ice sheet.