Regional climate signal vs. local noise: a two-dimensional view
of water isotopes in Antarctic firn at Kohnen Station, Dronning Maud
Land

Münch, Thomas; Kipfstuhl, Sepp; Freitag, Johannes; Meyer, Hanno; Laepple, Thomas

doi:https://doi.org/10.5194/cp-12-1565-2016

Articles | Volume 12, issue 7

https://doi.org/10.5194/cp-12-1565-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/cp-12-1565-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 12, issue 7

Research article

|

22 Jul 2016

Research article |

| 22 Jul 2016

Regional climate signal vs. local noise: a two-dimensional view of water isotopes in Antarctic firn at Kohnen Station, Dronning Maud Land

Thomas Münch, Sepp Kipfstuhl, Johannes Freitag, Hanno Meyer, and Thomas Laepple

Data sets

Oxygen isotopes from two snow trenches from Kohnen Station, Dronning Maud Land, Antarctica from the 2012/13 field season T. Münch, S. Kipfstuhl, J. Freitag, H. Meyer, and T. Laepple https://doi.org/10.1594/PANGAEA.861675

Short summary

Ice-core oxygen isotope ratios are a key climate archive to infer past temperatures, an interpretation however complicated by non-climatic noise. Based on 50 m firn trenches, we present for the first time a two-dimensional view (vertical × horizontal) of how oxygen isotopes are stored in Antarctic firn. A statistical noise model allows inferences for the validity of ice coring efforts to reconstruct past temperatures, highlighting the need of replicate cores for Holocene climate reconstructions.