Articles | Volume 12, issue 10
Clim. Past, 12, 1979–1993, 2016
https://doi.org/10.5194/cp-12-1979-2016
Clim. Past, 12, 1979–1993, 2016
https://doi.org/10.5194/cp-12-1979-2016

Research article 14 Oct 2016

Research article | 14 Oct 2016

Climatic and insolation control on the high-resolution total air content in the NGRIP ice core

Olivier Eicher et al.

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Short summary
A new high-resolution total air content record over the NGRIP ice core, spanning 0.3–120 kyr is presented. In agreement with Antarctic ice cores, we find a strong local insolation signature but also 3–5 % decreases in total air content as a local response to Dansgaard–Oeschger events, which can only partly be explained by changes in surface pressure and temperature. Accordingly, a dynamic response of firnification to rapid climate changes on the Greenland ice sheet must have occurred.