28 Jun 2023
 | 28 Jun 2023
Status: this preprint is currently under review for the journal CP.

Accumulation rates over the past 260 years archived in Elbrus ice core, Caucasus

Vladimir Mikhalenko, Stanislav Kutuzov, Pavel Toropov, Michel Legrand, Sergey Sokratov, Gleb Chernyakov, Ivan Lavrentiev, Susanne Preunkert, Anna Kozachek, Mstislav Vorobiev, Aleksandra Khairedinova, and Vladimir Lipenkov

Abstract. In this study, we present a seasonal-resolution accumulation record spanning the period from 1750 to 2009 Common Era (CE), based on a 181.8-m ice core obtained from the Elbrus Western Plateau in the Caucasus. We implemented various methods to account for uncertainties associated with glacier flow, layer thinning, and dating. Additionally, we developed a novel approach to calculate a seasonal calendar for meteorological data, enabling comparison with ice core records. The reconstructed accumulation data were compared with available meteorological data, gridded precipitation records, and paleo reanalysis data. Reconstructed accumulation is representative for a large region south of Eastern European plain and Black sea region. Summer precipitation was found to be the primary driver of precipitation variability. We identified a statistically significant but unstable in time relationship between changes in precipitation in the region and fluctuations of the North Atlantic Oscillation (NAO) index.

Vladimir Mikhalenko et al.

Status: final response (author comments only)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on cp-2023-46', Anonymous Referee #1, 17 Aug 2023
  • RC2: 'Comment on cp-2023-46', Anonymous Referee #2, 22 Sep 2023

Vladimir Mikhalenko et al.

Vladimir Mikhalenko et al.


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Short summary
In this paper, we present a detailed reconstruction of snow accumulation for both summer and winter seasons over the past 260 using ice-core records obtained from Mt. Elbrus in the Caucasus region. The accumulation record represents the historical precipitation patterns in a vast region encompassing the Northern Caucasus, Black Sea, and South-Eastern Europe. Our findings show that the North Atlantic plays a crucial role in determining precipitation levels in this region.