Articles | Volume 11, issue 2
Clim. Past, 11, 217–226, 2015
https://doi.org/10.5194/cp-11-217-2015
Clim. Past, 11, 217–226, 2015
https://doi.org/10.5194/cp-11-217-2015

Research article 10 Feb 2015

Research article | 10 Feb 2015

Reconstruction of recent climate change in Alaska from the Aurora Peak ice core, central Alaska

A. Tsushima et al.

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Short summary
A 180.17-m ice core was drilled at Aurora Peak in the central part of the Alaska Range, Alaska, in 2008. The ice core age was determined by annual counts of δD and seasonal cycles of Na+. Here, we show that the chronology of the Aurora Peak ice core from 95.61 m to the top corresponds to the period from 1900 to the summer season of 2008, with a dating error of ±3 years. Our results suggest that temporal variations in δD and annual accumulation rates are strongly related to shifts in PDO Index.