Труды сотрудников ИЛ им. В.Н. Сукачева СО РАН

[Text] / M. K. Hughes [et al.] // Holocene. - 1999. - Vol. 9, Is. 5. - P629-634, DOI 10.1191/095968399671321516. - Cited References: 30 . - 6. - ISSN 0959-6836РУБ Geography, Physical + Geosciences, Multidisciplinary

Аннотация: We report unusual twentieth-century early-summer warmth recorded by larch tree-rings at the northern tree-line in far northeastern Eurasia (Yakutia). The tree-ring series are strongly replicated and well suited to the detection of fluctuations on interannual to century timescales. They are strongly correlated with local instrumental temperature data. Mean early-summer temperature in the twentieth century significantly exceeds that of any period of the same length since Ao 1400. A century-scale trend, which commences in the mid-nineteenth century, is superimposed on interannual and decadal fluctuations, for example a marked cooling since 1978. While many of the 20 coolest early summers in the reconstruction occur within a few years after major explosive volcanic eruptions from low-latitude volcanoes, several of the 20 warmest early summers followed major explosive eruptions from high-latitude volcanoes.

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Держатели документа:
Univ Arizona, Tree Ring Res Lab, Tucson, AZ 85721 USA
Russian Acad Sci, Siberian Branch, Inst Forest, Krasnoyarsk 660036, Russia
Russian Acad Sci, Urals Branch, Inst Plant & Anim Ecol, Ekatarinburg 620219, Russia

Доп.точки доступа:
Hughes, M.K.; Vaganov, E.A.; Shiyatov, S...; Touchan, R...; Funkhouser, G...

[Text] / K. R. Briffa [et al.] // Philos. Trans. R. Soc. Lond. Ser. B-Biol. Sci. - 1998. - Vol. 353, Is. 1365. - P65-73, DOI 10.1098/rstb.1998.0191. - Cited References: 34 . - 9. - ISSN 0962-8436РУБ Biology

Аннотация: The annual growth of trees, as represented by a variety of ring-width, densitometric, or chemical parameters, represents a combined record of different environmental forcings, one of which is climate. Along with climate, relatively large-scale positive growth influences such as hypothesized 'fertilization' due to increased levels of atmospheric carbon dioxide or various nitrogenous compounds, or possibly deleterious effects of 'acid rain' or increased ultra-violet radiation, might all be expected to exert some influence on recent tree growth rates. Inferring the details of past climate variability from tree-ring data remains a largely empirical exercise, but one that goes hand-in-hand with the development of techniques that seek to identify and isolate the confounding influence of local and larger-scale non-climatic factors. By judicious sampling, and the use of rigorous statistical procedures, dendroclimatology has provided unique insight into the nature of past climate variability, but most significantly at interannual, decadal, and centennial time-scales. Here, examples are shown that illustrate the reconstruction of annually resolved patterns of past summer temperature around the Northern Hemisphere, as well as some more localized reconstructions, but ones which span 1000 years or more. These data provide the means of exploring the possible role of different climate forcings; for example, they provide evidence of the large-scale effects of explosive volcanic eruptions on regional and hemispheric temperatures during the last 400 years. However, a dramatic change in the sensitivity of hemispheric tree-growth to temperature forcing has become apparent during recent decades, and there is additional evidence of major tree-growth (and hence, probably, ecosystem biomass) increases in the northern boreal forests, most clearly over the last century. These possibly anthropogenically related changes in the ecology of tree growth have important implications for modelling future atmospheric CO2 concentrations. Also, where dendroclimatology is concerned to reconstruct longer (increasingly above centennial) temperature histories, such alterations of 'normal' (pre-industrial) tree-growth rates and climate-growth relationships must be accounted for in our attempts to translate the evidence of past tree growth changes.

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Держатели документа:
Univ E Anglia, Climat Res Unit, Norwich NR4 7TJ, Norfolk, England
Swiss Fed Inst Forest Snow & Landscape Res, CH-8903 Birmensdorf, Switzerland
Russian Acad Sci, Inst Plant & Anim Ecol, Ural Branch, Ekaterinburg 620219, Russia
Russian Acad Sci, Inst Forest, Siberian Branch, Krasnoyarsk 660036, Russia
Stockholm Univ, Nat Geog Inst, S-10691 Stockholm, Sweden

Доп.точки доступа:
Briffa, K.R.; Schweingruber, F.H.; Jones, P.D.; Osborn, T.J.; Harris, I.C.; Shiyatov, S.G.; Vaganov, E.A.; Grudd, H...

/ O. V. Churakova Sidorova [et al.] // Global Planet. Change. - 2014. - Vol. 122. - P140-150, DOI 10.1016/j.gloplacha.2014.08.015 . - ISSN 0921-8181
Аннотация: Recently published, improved chronologies for volcanic sulfate in Greenland and Antarctic ice permit a comparison of the growth responses of absolutely annually dated tree rings at three locations in Siberia with annual ice-core records of volcanic eruptions centered on AD 536. For the first time for this region and period, we present unique data sets for tree-ring width, cell-wall thickness, ?13C and ?18O in cellulose. These were based on multiple samples from relict wood of larch obtained from two sites close to the northern limit of tree growth on the Taimyr Peninsula and in northeastern Yakutia, and at a high-elevation, location 20° further South in the Altai Mts. An event in AD 536 was associated with different, but marked, changes in tree-ring parameters at the high-latitude sites compared with the high elevation site. An AD 541 event was associated with its own distinctive tree-ring responses across the three sites and multiple variables. The years after AD 532 were marked by a strong and sustained decrease in growth at the high-elevation, more southerly, site. The combination of improved ice-core chronology for the climatically effective volcanic eruptions of this part of the 6th century AD, and an array of tree-ring sites with different climates and multiple tree-ring variables permits a richer description of tree responses to this cluster of events. The pattern of tree-ring parameter responses at the three locations in AD 536, AD 541, and perhaps AD 532 is consistent with responses to climatically effective volcanic eruptions influencing tree response in those and subsequent years. © 2014 Elsevier B.V.

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Держатели документа:
ETH Zurich, Institute of Terrestrial Ecosystems, Zurich 8092, Switzerland
V.N. Sukachev Institute of Forest SB RAS, Krasnoyarsk, Akademgorodok 660036, Russian Federation
Paul Scherrer Institute, Villigen 5232, Switzerland
UFZ - Helmholtz Centre for Environmental Research, Department of Catchment Hydrology, Theodor-Lieser-Stra?e 4, 06120 Halle, Germany
Siberian Federal University, Krasnoyarsk, Svobodniy 79 660049, Russian Federation
University of Arizona, Tucson, AZ 85721, United States

Доп.точки доступа:
Churakova Sidorova, O.V.; Bryukhanova, M.V.; Saurer, M.; Boettger, T.; Naurzbaev, M.M.; Myglan, V.S.; Vaganov, E.A.; Hughes, M.K.; Siegwolf, R.T.W.

/ L. Schneider [et al.] // Geophys. Res. Lett. - 2015. - Vol. 42, Is. 11. - P4556-4562, DOI 10.1002/2015GL063956 . - ISSN 0094-8276
Аннотация: Annually resolved and millennium-long reconstructions of large-scale temperature variability are primarily composed of tree ring width (TRW) chronologies. Changes in ring width, however, have recently been shown to bias the ratio between low- and high-frequency signals. To overcome limitations in capturing the full spectrum of past temperature variability, we present a network of 15 maximum latewood density (MXD) chronologies distributed across the Northern Hemisphere extratropics. Independent subsets of continental-scale records consistently reveal high MXD before 1580 and after 1910, with below average values between these periods. Reconstructed extratropical summer temperatures reflect not only these long-term trends but also distinct cooling pulses after large volcanic eruptions. In contrast to TRW-dominated reconstructions, this MXD-based record indicates a delayed onset of the Little Ice Age by almost two centuries. The reduced memory inherent in MXD is likely responsible for the rapid recovery from volcanic-induced cooling in the fourteenth century and the continuation of warmer temperatures until ~1600. ©2015. American Geophysical Union. All Rights Reserved.

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Держатели документа:
Department of Geography, Johannes Gutenberg University, Mainz, Germany
Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, United States
Swiss Federal Research Institute WSL, Birmensdorf, Switzerland
School of Geography and Geosciences, University of St Andrews, StAndrews, United Kingdom
Institute for the Humanities, Siberian Federal University, Krasnoyarsk, Russian Federation
V.N. Sukachev Institute of Forest SB RAS, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Schneider, L.; Smerdon, J.E.; Buntgen, U.; Wilson, R.J.S.; Myglan, V.S.; Kirdyanov, A.V.; Esper, J.