Climate of the Past
Climate of the Past
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Articles | Volume 13, issue 7
Articles | Volume 13, issue 7
https://doi.org/10.5194/cp-13-833-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/cp-13-833-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 13, issue 7
Research article
 | 
13 Jul 2017
Research article |  | 13 Jul 2017

Modelling firn thickness evolution during the last deglaciation: constraints on sensitivity to temperature and impurities

Camille Bréant, Patricia Martinerie, Anaïs Orsi, Laurent Arnaud, and Amaëlle Landais

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Short summary
All firn densification models applied to deglaciations show a large disagreement with δ15N measurements at sites in East Antarctica, predicting larger firn thickness during the Last Glacial Maximum, whereas δ15N suggests a reduced firn thickness compared to the Holocene. Here we present modifications, which significantly reduce the model–data mismatch for the gas trapping depth evolution over the last deglaciation at the coldest sites in East Antarctica, to the LGGE firn densification model.
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