scholarly journals The unknown third – Hydrogen isotopes in tree-ring cellulose across Europe

2021 ◽  
pp. 152281
Author(s):  
V. Vitali ◽  
E. Martínez-Sancho ◽  
K. Treydte ◽  
L. Andreu-Hayles ◽  
I. Dorado-Liñán ◽  
...  
Keyword(s):  
Tree Ring ◽  
Hydrogen Isotopes ◽  
Tree Ring Cellulose

Response of Siberian trees to climatic changes over the past 1500 years

2021 ◽  
Author(s):  
Olga Churakova (Sidorova) ◽  
Marina Fonti ◽  
Rolf Siegwolf ◽  
Tatyana Trushkina ◽  
Eugene Vaganov ◽  
...  
Keyword(s):  
Tree Ring ◽  
Ice Core ◽  
Climatic Changes ◽  
Medieval Warm Period ◽  
Warm Period ◽  
Taimyr Peninsula ◽  
Climate Conditions ◽  
Northeastern Part ◽  
The Past ◽  
Tree Ring Cellulose

<p>We use an interdisciplinary approach combining stable isotopes in tree rings, pollen data, ice cores from temperature-limited environment in the Siberian north and developed a comprehensive description of the climatic changes over the past 1500 years. We found that the Climatic Optimum Period was warmer and drier compared to the Medieval one, but rather similar to the recent period. Our results indicate that the Medieval Warm period in the Taimyr Peninsula started earlier and was wetter compared to the northeastern part of Siberia (northeastern Yakutia). Summer precipitation reconstruction obtained from carbon isotopes in tree-ring cellulose from Taimyr Peninsula significantly correlated with the pollen data of the Lama Lake (Andreev et al. 2004) and oxygen isotopes of the ice core from Severnaya Zemlya (Opel et al. 2013) recording wetter climate conditions during the Medieval Warm period compared to the northeastern part of Siberia. Common large-scale climate variability was confirmed by significant relationship between oxygen isotope data in tree-ring cellulose from the Taimyr Peninsula and northeastern Yakutia, and oxygen isotope ice core data from Severnaya Zemlja during the Medieval Warm period and the recent one. Finally, we showed that the recent warming on the Taimyr Peninsula is not unprecedented in the Siberian north. Similar climate conditions were recorded by stable isotopes in tree rings, pollen, and ice core data 6000 years ago. On the northeastern part of Siberia newly developed a 1500-year summer vapor pressure deficit (VPD) reconstruction showed, that VPD increased recently, but does not yet exceed the maximum values reconstructed during the Medieval Warm period. The most humid conditions in the northeastern part of Siberia were recorded in the Early Medieval period and during the Little Ice Age. However, the increasing VPD under elevated air temperature in the last decades affects the hydrological regime of these sensitive ecosystems by greater evapotranspiration rates. Further VPD increase will significantly affect Siberian forests most likely leading to drought even under additional access of thawed permafrost water.</p><p>This work was supported by the FP7-PEOPLE-IIF-2008 - Marie Curie Action: "International Incoming Fellowships" 235122 and "Reintegration Fellowships" 909122 “Climatic and environmental changes in the Eurasian Subarctic inferred from tree-ring and stable isotope chronologies for the past and recent periods” and the Government of Krasnoyarsk Kray and Russian Foundation for Basic Research and Krasnoyarsk Foundation 20-44-240001 “Adaptation of conifer forests on the north of the Krasnoyarsk region (Taimyr Peninsula) to climatic changes after extreme events over the past 1500 years“ awarded to Olga V. Churakova (Sidorova).</p>

scholarly journals Signal strength and climate relationships in13C/12C ratios of tree ring cellulose from oak in east England

1997 ◽  
Vol 102 (D16) ◽  
pp. 19507-19516 ◽  
Author(s):  
I. Robertson ◽  
V. R. Switsur ◽  
A. H. C. Carter ◽  
A. C. Barker ◽  
J. S. Waterhouse ◽  
...  
Keyword(s):  
Tree Ring ◽  
Signal Strength ◽  
Tree Ring Cellulose

Quantification of Deuterium Isotopomers of Tree-Ring Cellulose Using Nuclear Magnetic Resonance

2006 ◽  
Vol 78 (24) ◽  
pp. 8406-8411 ◽  
Author(s):  
Tatiana R. Betson ◽  
Angela Augusti ◽  
Jürgen Schleucher
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Tree Ring ◽  
Tree Ring Cellulose ◽  
Nuclear Magnetic
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