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The Cryosphere An interactive open-access journal of the European Geosciences Union
The Cryosphere, 10, 2099-2111, 2016
https://doi.org/10.5194/tc-10-2099-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Research article
15 Sep 2016
Dispersion in deep polar firn driven by synoptic-scale surface pressure variability
Christo Buizert and Jeffrey P. Severinghaus

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The upper 50–100 m of the world's ice sheets consists of the firn layer, a porous layer of snow that is slowly compacted by overlying snow. Understanding air movement inside the firn is critical for ice core climate reconstructions. Buizert and Severinghaus identify and describe a new mechanism of firn air movement. High- and low-pressure systems force air movement in the firn that drives strong mixing, called dispersion. Dispersion is the main mechanism for air mixing in the deep firn.
The upper 50–100 m of the world's ice sheets consists of the firn layer, a porous layer of snow...
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