Drought variability of Kyrgyzstan is an important component of climate change of high Asia.
Long-term information about the history of drought is, however, limited because the instrumental records
are short. Here, we developed three chronologies for juniper trees (Juniperus turkestanica) under different
microsite conditions in the Gulcha River Basin, Kyrgyzstan. The three chronologies (GUL, GUR and
GUD) were compared with climate data which covered the study area. Growth of the GUL site correlates
positively with May–June precipitation of the current growing season and September precipitation of the
previous year, but negatively with temperatures of prior July, current May and July. Growth of the GUR site
correlates positively with precipitation of current May and September, and negatively with temperature of
current June and July. Ring width at GUD site is negatively correlated with temperature of the current May
and July, and positively correlated with precipitation of prior December and current September. Response
analysis shows that water availability is the main factor limiting the radial growth of juniper trees at the
GUL and GUD sites. Based on the relationships derived from climate response analyses, the potential of
tree-ring chronologies from this species to provide drought reconstructions in the Gulcha River Basin has
been established. The GUL chronology and other moisture sensitive tree-ring series from high Asia capture
the recent wetting trend. The records contribute to a growing tree-ring network for high Asia, including
sites in China, Kyrgyzstan, Pakistan and Tajikistan.
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