Climate of the Past
Climate of the Past
CP
Articles | Volume 22, issue 11
Articles | Volume 22, issue 11
https://doi.org/10.5194/cp-22-2015-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/cp-22-2015-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 22, issue 11
Research article
 | 
12 Nov 2026
Research article |  | 12 Nov 2026

Tree-ring cellulose oxygen isotope reveals summer hydroclimate variability across the East European Plain

Qiaoyun Lin, Chenxi Xu, Ru Huang, Wenling An, Vladimir Matskovsky, Olga Solomina, Ekaterina Dolgova, Yaru Zhao, and Zhengtang Guo

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Short summary
Along the East European Plain latitudinal transect, Scots pine tree-ring cellulose oxygen isotopes (δ18OTRC) increases from north to south and consistently records significant summer hydroclimate signals. Although the dominant controls differ among regions, the northern chronology shows the strongest and most stable vapor pressure deficit signal. Compared with tree-ring width (TRW), δ18OTRC better reflects regional climate information linked to atmospheric humidity and evaporative demand.
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