Аннотация: We present new tree-ring width, delta C-13, and delta O-18 chronologies from the Koksu site (49A degrees N, 86A degrees E, 2,200 m asl), situated in the Russian Altai. A strong temperature signal is recorded in the tree-ring width (June-July) and stable isotope (July-August) chronologies, a July precipitation signal captured by the stable isotope data. To investigate the nature of common climatic patterns, our new chronologies are compared with previously published tree-ring and stable isotope data from other sites in the Altai region. The temperature signal preserved in the conifer trees is strongly expressed at local and regional scales for all studied sites, resulting in even stronger temperature and precipitation signals in combined average chronologies compared to separate chronologies. This enables the reconstruction of June-July and July-August temperatures for the last 200 years using tree-ring and stable carbon isotopes. A July precipitation reconstruction based on oxygen isotopic variability recorded in tree-rings can potentially improve the understanding of hydrological changes and the occurrence of extreme events in the Russian Altai.
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Держатели документа:
[Sidorova, O. V.
Siegwolf, R. T. W.
Saurer, M.] Paul Scherrer Inst, CH-5232 Villigen, Switzerland
[Myglan, V. S.
Shishov, V. V.] Siberian Fed Univ, Krasnoyarsk 660049, Russia
[Ovchinnikov, D. V.] VN Sukachev Inst Forest SB RAS, Krasnoyarsk 660036, Russia
[Helle, G.] German Ctr GeoSci GFZ, Helmholz Ctr Potsdam, D-14473 Potsdam, Germany
[Loader, N. J.] Swansea Univ, Dept Geog, Swansea SA2 8PP, W Glam, Wales
Доп.точки доступа:
Sidorova, O.V.; Siegwolf, RTW; Myglan, V.S.; Ovchinnikov, D.V.; Shishov, V.V.; Helle, G...; Loader, N.J.; Saurer, M...; Marie Curie IIF [EU-ISOTREC 235122]; SNSF [200021_121838/1]; SNSF - SCOPES [Iz73z0-128035/1, MK-1675.2011.6]; Russian Scientific School [5327.2012.4]; RFBR [13-05-00620]; UK NERC [NE/B501504]; C3W