Articles | Volume 11, issue 5
The Cryosphere, 11, 2175–2188, 2017
The Cryosphere, 11, 2175–2188, 2017

Research article 12 Sep 2017

Research article | 12 Sep 2017

Constraints on post-depositional isotope modifications in East Antarctic firn from analysing temporal changes of isotope profiles

Thomas Münch et al.

Data sets

Stable water isotopes measured along two snow trenches sampled at Kohnen Station, Dronning Maud Land, Antarctica in the 2014/15 field season T. Münch, S. Kipfstuhl, J. Freitag, H. Meyer, and T. Laepple

Short summary
The importance of post-depositional changes for the temperature interpretation of water isotopes is poorly constrained by observations. Here, for the first time, temporal isotope changes in the open-porous firn are directly analysed using a large array of shallow isotope profiles. By this, we can reject the possibility of post-depositional change beyond diffusion and densification as the cause of the discrepancy between isotope and local temperature variations at Kohnen Station, East Antarctica.