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

Tsushima, A.; Matoba, S.; Shiraiwa, T.; Okamoto, S.; Sasaki, H.; Solie, D. J.; Yoshikawa, K.

doi:https://doi.org/10.5194/cp-11-217-2015

Articles | Volume 11, issue 2

https://doi.org/10.5194/cp-11-217-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/cp-11-217-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 11, issue 2

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, S. Matoba, T. Shiraiwa, S. Okamoto, H. Sasaki, D. J. Solie, and K. Yoshikawa

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Final revised paper (published on 10 Feb 2015)
Preprint (discussion started on 08 Apr 2014)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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SC C332: 'A very nice ice core record', Peter Neff, 02 May 2014
RC C370: 'review of Tsushima et al.', Anonymous Referee #1, 07 May 2014
RC C390: 'Review of Tsushima et al, paper', Anonymous Referee #2, 08 May 2014
AC C949: 'Response to all comments.', Akane Tsushima, 01 Jul 2014

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.