InSAR Penetration Bias
Ongoing global warming leads to dramatic changes in the cryosphere, with considerable mass losses of the Greenland ice sheet in recent decades. Projections indicate further acceleration of this trend, resulting in continuing sea level rise with far-reaching consequences for humans and the environment worldwide.
To improve the forecasting capability and to develop mitigation and adaptation strategies, reliable and consistent information on the current state and the evolution of the ice sheet is needed. In this context, the TanDEM-X mission is of high interest, as it provides globally consistent height measurements with high spatial resolution of 0.4 arc seconds. However, penetration of the SAR signals up to several meters below the ice sheet surface poses a considerable challenge when using TanDEM-X elevation data for cryosphere and climate impact research.
