Precipitation reconstruction for the Khakassia region, Siberia, from tree rings

Tatiana V. Kostyakova, Ramzi Touchan, Elena A. Babushkina, Liliana V. Belokopytova

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

A nested July–June precipitation reconstruction for the period AD 1777–2012 was developed from multi-century tree-ring records of Pinus sylvestris L. (Scots pine) for the Republic of Khakassia in Siberia, Russia. Calibration and verification statistics for the period 1948–2012 show a high level of skill and account for a significant portion of the observed variance (>50%) irrespective of which period is used to develop or verify the regression model. Split-sample validation supports our use of a reconstruction model based on the full period of reliable observational data (1948–2012). Thresholds (25th and 75th percentiles) based on the empirical cumulative distribution of 1948–2012 observed precipitation were used to delineate dry years and wet years of the long-term reconstruction. The longest reconstructed dry period, defined as consecutive years with less than 25th percentile of observed July–June precipitation, was 3 years (1861–1863). There was no significant difference in the number dry and wet periods during the 236 years of the reconstructed precipitation. Maps of geopotential height anomalies indicate that dry years differ from wet years primarily in the location of an anomalous 500-mb ridge approximately over the study area.

Original languageEnglish (US)
Pages (from-to)377-385
Number of pages9
JournalHolocene
Volume28
Issue number3
DOIs
StatePublished - Mar 1 2018

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tree ring
geopotential
calibration
anomaly
Siberia
Tree Rings

Keywords

  • climate reconstruction
  • drought
  • Siberia
  • tree ring

ASJC Scopus subject areas

  • Global and Planetary Change
  • Archaeology
  • Ecology
  • Earth-Surface Processes
  • Palaeontology

Cite this

Precipitation reconstruction for the Khakassia region, Siberia, from tree rings. / Kostyakova, Tatiana V.; Touchan, Ramzi; Babushkina, Elena A.; Belokopytova, Liliana V.

In: Holocene, Vol. 28, No. 3, 01.03.2018, p. 377-385.

Research output: Contribution to journalArticle

Kostyakova, Tatiana V. ; Touchan, Ramzi ; Babushkina, Elena A. ; Belokopytova, Liliana V. / Precipitation reconstruction for the Khakassia region, Siberia, from tree rings. In: Holocene. 2018 ; Vol. 28, No. 3. pp. 377-385.
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