Annual precipitation reconstruction since AD 775 based on tree rings from the Qilian Mountains, northwestern China

Yong Zhang, Qinhua Tian, Xiaohua Gou, Fahu Chen, Steven W. Leavitt, Yousheng Wang

Research output: Contribution to journalArticle

57 Scopus citations

Abstract

A millennium-long tree-ring-width chronology from the middle Qilian Mountains in northwestern China has been used to reconstruct annual precipitation variation (from the prior August to current July) since AD 775. The reconstruction explains 37.8% of variance of the observed data. Based on the mean and standard deviation of the reconstructed series, several prolonged severe dry and wet periods were indentified: drought spells in AD 1144-1154 (11 years) and 1925-1932 (8 years) and wet spells in AD 985-999 (15 years), 1089-1097 (9 years) and 1979-1991 (12 years). Both multi-taper spectral analysis (MTM) and wavelet analysis suggest that periods of the reconstructed precipitation are consistent with those associated with the Asian Summer Monsoon and perhaps solar activity.

Original languageEnglish (US)
Pages (from-to)371-381
Number of pages11
JournalInternational Journal of Climatology
Volume31
Issue number3
DOIs
StatePublished - Mar 15 2011

Keywords

  • Drought
  • Moisture excess
  • Precipitation
  • Qilian Mountains
  • Tree-ring reconstruction

ASJC Scopus subject areas

  • Atmospheric Science

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