Articles | Volume 15, issue 8
The Cryosphere, 15, 3655–3679, 2021
The Cryosphere, 15, 3655–3679, 2021
Research article
06 Aug 2021
Research article | 06 Aug 2021

Upstream flow effects revealed in the EastGRIP ice core using Monte Carlo inversion of a two-dimensional ice-flow model

Tamara Annina Gerber et al.

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Short summary
We simulate the ice flow in the onset region of the Northeast Greenland Ice Stream to determine the source area and past accumulation rates of ice found in the EastGRIP ice core. This information is required to correct for bias in ice-core records introduced by the upstream flow effects. Our results reveal that the increasing accumulation rate with increasing upstream distance is predominantly responsible for the constant annual layer thicknesses observed in the upper 900 m of the ice core.