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

[Text] / J. . Esper [et al.] // Glob. Change Biol. - 2010. - Vol. 16, Is. 1. - P386-398, DOI 10.1111/j.1365-2486.2009.01913.x. - Cited References: 70. - We thank F. H. Schweingruber for stimulating discussions. Supported by the European Community project Millennium (grant 017008) and the Swiss National Science Foundation through the National Centre for Competence in Climate Research (NCCR-Climate). . - 13. - ISSN 1354-1013РУБ Biodiversity Conservation + Ecology + Environmental Sciences

Аннотация: Estimates of past climate and future forest biomass dynamics are constrained by uncertainties in the relationships between growth and climatic variability and uncertainties in the instrumental data themselves. Of particular interest in this regard is the boreal-forest zone, where radial growth has historically been closely connected with temperature variability, but various lines of evidence have indicated a decoupling since about the 1960s. We here address this growth-vs.-temperature divergence by analyzing tree-ring width and density data from across Siberia, and comparing 20th century proxy trends with those derived from instrumental stations. We test the influence of approaches considered in the recent literature on the divergence phenomenon (DP), including effects of tree-ring standardization and calibration period, and explore instrumental uncertainties by employing both adjusted and nonadjusted temperature data to assess growth-climate agreement. Results indicate that common methodological and data usage decisions alter 20th century growth and temperature trends in a way that can easily explain the post-1960 DP. We show that (i) Siberian station temperature adjustments were up to 1.3 degrees C for decadal means before 1940, (ii) tree-ring detrending effects in the order of 0.6-0.8 degrees C, and (iii) calibration uncertainties up to about 0.4 degrees C over the past 110 years. Despite these large uncertainties, instrumental and tree growth estimates for the entire 20th century warming interval match each other, to a degree previously not recognized, when care is taken to preserve long-term trends in the tree-ring data. We further show that careful examination of early temperature data and calibration of proxy timeseries over the full period of overlap with instrumental data are both necessary to properly estimate 20th century long-term changes and to avoid erroneous detection of post-1960 divergence.

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[Esper, Jan
Frank, David
Buentgen, Ulf
Verstege, Anne] Swiss Fed Res Inst, WSL, CH-8903 Birmensdorf, Switzerland
[Esper, Jan] Oeschger Ctr Climate Change Res, CH-3012 Bern, Switzerland
[Hantemirov, Rashit M.] Russian Acad Sci, Lab Dendrochronol, Inst Plant & Anim Ecol, Ural Branch, Ekaterinburg 620144, Russia
[Kirdyanov, Alexander V.] RAS, VN Sukachev Inst Forest SB, Krasnoyarsk 660036, Akademgorodok, Russia

Доп.точки доступа:
Esper, J...; Frank, D...; Buntgen, U...; Verstege, A...; Hantemirov, R.M.; Kirdyanov, A.V.

[Text] / K. R. Briffa [et al.] // Philos. Trans. R. Soc. B-Biol. Sci. - 2008. - Vol. 363, Is. 1501. - P2271-2284, DOI 10.1098/rstb.2007.2199. - Cited References: 42 . - 14. - ISSN 0962-8436РУБ Biology

Аннотация: This paper describes variability in trends of annual tree growth at several locations in the high latitudes of Eurasia, providing a wide regional comparison over a 2000-year period. The study focuses on the nature of local and widespread tree-growth responses to recent warming seen in instrumental observations, available in northern regions for periods ranging from decades to a century. Instrumental temperature data demonstrate differences in seasonal scale of Eurasian warming and the complexity and spatial diversity of tree-growing-season trends in recent decades. A set of long tree-ring chronologies provides empirical evidence of association between inter-annual tree growth and local, primarily summer, temperature variability at each location. These data show no evidence of a recent breakdown in this association as has been found at other high-latitude Northern Hemisphere locations. Using Kendall's concordance, we quantify the time-dependent relationship between growth trends of the long chronologies as a group. This provides strong evidence that the extent of recent widespread warming across northwest Eurasia, with respect to 100- to 200-year trends, is unprecedented in the last 2000 years. An equivalent analysis of simulated temperatures using the HadCM3 model fails to show a similar increase in concordance expected as a consequence of anthropogenic forcing.

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Держатели документа:
[Briffa, Keith R.
Melvin, Thomas M.] Univ E Anglia, Sch Environm Sci, Climat Res Unit, Norwich NR4 7TJ, Norfolk, England
[Shishov, Vladimir V.
Naurzbaev, Muktar M.] Russian Acad Sci, Siberian Branch, Sukachev Inst Forest, Dendroecol Dept, Krasnoyarsk 660036, Russia
[Shishov, Vladimir V.] Krasnoyarsk State Trade Econ Inst, IT & Math Modelling Dept, Krasnoyarsk 660075, Russia
[Grudd, Haken] Stockholm Univ, Dept Phys Geog & Quaternary Geol, S-10691 Stockholm, Sweden
[Hantemirov, Rashit M.] Russian Acad Sci, Ural Branch, Inst Plant & Anim Ecol, Lab Dendrochronol, Ekaterinburg 620144, Russia
[Eronen, Matti] Univ Helsinki, Dept Geol, FIN-00014 Helsinki, Finland
[Vaganov, Eugene A.] Siberian Fed Univ, Krasnoyarsk 660041, Russia

Доп.точки доступа:
Briffa, K.R.; Shishov, V.V.; Melvin, T.M.; Vaganov, E.A.; Grudd, H...; Hantemirov, R.M.; Eronen, M...; Naurzbaev, M.M.

[Text] / I. . Ensminger [et al.] // Glob. Change Biol. - 2004. - Vol. 10, Is. 6. - P995-1008, DOI 10.1111/j.1365-2486.2004.00781.x. - Cited References: 57 . - 14. - ISSN 1354-1013РУБ Biodiversity Conservation + Ecology + Environmental Sciences

Аннотация: During winter and early spring, evergreen boreal conifers are severely stressed because light energy cannot be used when photosynthesis is pre-empted by low ambient temperatures. To study photosynthetic performance dynamics in a severe boreal climate, seasonal changes in photosynthetic pigments, chloroplast proteins and photochemical efficiency were studied in a Scots pine forest near Zotino, Central Siberia. In winter, downregulation of photosynthesis involved loss of chlorophylls, a twofold increase in xanthophyll cycle pigments and sustained high levels of the light stress-induced zeaxanthin pigment. The highest levels of xanthophylls and zeaxanthin did not occur during the coldest winter period, but rather in April when light was increasing, indicating an increased capacity for thermal dissipation of excitation energy at that time. Concomitantly, in early spring the D1 protein of the photosystem II (PSII) reaction centre and the light-harvesting complex of PSII dropped to their lowest annual levels. In April and May, recovery of PSII activity, chloroplast protein synthesis and rearrangements of pigments were observed as air temperatures increased above 0degreesC. Nevertheless, severe intermittent low-temperature episodes during this period not only halted but actually reversed the physiological recovery. During these spring low-temperature episodes, protective processes involved a complementary function of the PsbS and early light-induced protein thylakoid proteins. Full recovery of photosynthesis did not occur until the end of May. Our results show that even after winter cold hardening, photosynthetic activity in evergreens responds opportunistically to environmental change throughout the cold season. Therefore, climate change effects potentially improve the sink capacity of boreal forests for atmospheric carbon. However, earlier photosynthesis in spring in response to warmer temperatures is strongly constrained by environmental variation, counteracting the positive effects of an early recovery process.

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Max Planck Inst Biogeochem, D-07701 Jena, Germany
Umea Univ, Dept Plant Physiol, S-90187 Umea, Sweden
Mt Allison Univ, Sackville, NB E4L 1G7, Canada
Umea Univ, Dept Biochem, S-90187 Umea, Sweden
Russian Acad Sci, Inst Forest, Siberian Branch, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Ensminger, I...; Sveshnikov, D...; Campbell, D.A.; Funk, C...; Jansson, S...; Lloyd, J...; Shibistova, O...; Oquist, G...

[Text] / M. M. Naurzbaev, E. A. Vaganov // J. Geophys. Res.-Atmos. - 2000. - Vol. 105, Is. D6. - P7317-7326, DOI 10.1029/1999JD901059. - Cited References: 40 . - 10. - ISSN 2169-897XРУБ Meteorology & Atmospheric Sciences

Аннотация: Regional tree ring chronology with extension 2209 years (from 212 B.C. till 1996 A.D.) was built for east Taymir and Putoran according to wood of living trees, well- preserved remains of dead trees, and subfossil wood from alluvial bank deposits by the cross-dating method. In addition, the "floating" tree ring width chronology for the period of Holocene optimum (3300-2600 B.C.) was built with extention 685 years and supported by several radiocarbon dates. High values of synchrony and correlation of individual tree ring series show a prevailing effect of one external factor on radial tree growth change in the studied region of the Siberian subarctic. It was established that the main factors of growth variability are the early summer and annual temperature, which explain up to 70% of tree growth rate variability. Cyclic components stable for two millennia were revealed at analysis of the tree ring chronology: double secular (similar to 180 years), secular (78-90 years), and intrasecular (44, 28, 11, and 6.7-6.9 years) variations. Models for reconstruction of the early summer and annual air temperature were obtained according to tree ring variability. Temperature dynamics in the eastern part of Taymir for the last two millenia agree well with temperature variations in the Northern Hemisphere obtained according to other indirect sources. The warming of the middle of the twentieth century is not extraordinary. The warming at the end of the first and beginning of the second millennia ("Medieval Warm Period") was longer in time and closer in amplitude.

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Держатели документа:
Taymir Biospher Reserve, Khatanga, Russia
Russian Acad Sci, Inst Forest, Siberian Branch, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Naurzbaev, M.M.; Vaganov, E.A.

[Text] / M. N. Evans [et al.] // J. Geophys. Res.-Biogeosci. - 2006. - Vol. 111, Is. G3. - Ст. G03008, DOI 10.1029/2006JG000166. - Cited References: 57 . - 13. - ISSN 0148-0227РУБ Environmental Sciences + Geosciences, Multidisciplinary

Аннотация: We investigate the interpretation of tree-ring data using the Vaganov-Shashkin forward model of tree-ring formation. This model is derived from principles of conifer wood growth, and explicitly incorporates a nonlinear daily timescale model of the multivariate environmental controls on tree-ring growth. The model results are shown to be robust with respect to primary moisture and temperature parameter choices. When applied to the simulation of tree-ring widths from North America and Russia from the Mann et al. (1998) and Vaganov et al. (2006) data sets, the forward model produces skill on annual and decadal timescales which is about the same as that achieved using classical dendrochronological statistical modeling techniques. The forward model achieves this without site-by-site tuning as is performed in statistical modeling. The results support the interpretation of this broad-scale network of tree-ring width chronologies primarily as climate proxies for use in statistical paleoclimatic field reconstructions, and point to further applications in climate science.

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Держатели документа:
Univ Arizona, Tree Ring Res Lab, Tucson, AZ 85721 USA
Univ Arizona, Dept Geosci, Tucson, AZ 85721 USA
Columbia Univ, Lamont Doherty Earth Observ, Palisades, NY 10964 USA
Russian Acad Sci, Inst Forest, Krasnoyarsk, Russia

Доп.точки доступа:
Evans, M.N.; Reichert, B.K.; Kaplan, A...; Anchukaitis, K.J.; Vaganov, E.A.; Hughes, M.K.; Cane, M.A.

/ S. Guillet [et al.] // Nat. Geosci. - 2017. - Vol. 10, Is. 2. - P123-+, DOI 10.1038/NGEO2875. - Cited References:45. - S.G., C.C., M.S. and O.V.C. acknowledge support from the Era.Net RUSplus project ELVECS (SNF project number: IZRPZ0_164735). This study benefited from data gathered within the ANR CEPS GREENLAND project. V.S.M. received support from the Russian Science Foundation (project no. 15-14-30011). R. Hantemirov kindly provided a millennium-long chronology. The authors are grateful to W. S. Atwell and W. Wayne-Farris for discussions on historical sources from Japan as well as to M. Luisa Avila for her help with Muslim sources from Mediaeval Spain. S.G. and C.C. are very grateful to S. Finet, L. Fazan and P. Guerin for their help with R-scripts, translations and fruitful discussions, respectively. . - ISSN 1752-0894. - ISSN 1752-0908РУБ Geosciences, Multidisciplinary

Аннотация: The eruption of Samalas in Indonesia in 1257 ranks among the largest sulfur-rich eruptions of the Common Era with sulfur deposition in ice cores reaching twice the volume of the Tambora eruption in 1815. Sedimentological analyses of deposits confirm the exceptional size of the event, which had both an eruption magnitude and a volcanic explosivity index of 7. During the Samalas eruption, more than 40 km(3) of dense magma was expelled and the eruption column is estimated to have reached altitudes of 43 km. However, the climatic response to the Samalas event is debated since climate model simulations generally predict a stronger and more prolonged surface air cooling of Northern Hemisphere summers than inferred from tree-ring-based temperature reconstructions. Here, we draw on historical archives, ice-core data and tree-ring records to reconstruct the spatial and temporal climate response to the Samalas eruption. We find that 1258 and 1259 experienced some of the coldest Northern Hemisphere summers of the past millennium. However, cooling across the Northern Hemisphere was spatially heterogeneous. Western Europe, Siberia and Japan experienced strong cooling, coinciding with warmer-than-average conditions over Alaska and northern Canada. We suggest that in North America, volcanic radiative forcing was modulated by a positive phase of the El Nino-Southern Oscillation. Contemporary records attest to severe famines in England and Japan, but these began prior to the eruption. We conclude that the Samalas eruption aggravated existing crises, but did not trigger the famines.

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Univ Bern, Inst Geol Sci, Dendrolab Ch, Baltzerstr 1 3, CH-3012 Bern, Switzerland.
Univ Blaise Pascal, CNRS, UMR 6042, Geolab, 4 Rue Ledru, F-63057 Clermont Ferrand, France.
Univ Geneva, Inst Environm Sci, Climat Change & Climate Impacts, 66 Blvd Carl Vogt, CH-1205 Geneva, Switzerland.
Univ Geneva, Dept Earth Sci, Rue Maraichers 13, CH-1205 Geneva, Switzerland.
Univ Paris 06, Lab Oceanog & Climat Expt Approches Numer, 4 Pl Jussieu, F-75252 Paris 05, France.
Univ Paris 1 Pantheon Sorbonne, Lab Geog Phys, 1 Pl Aristide Briand, F-92195 Meudon, France.
Univ Reading, Dept Meteorol, NCAS Climate, Reading RG6 6BB, Berks, England.
UR ETNA Univ Grenoble Alpes, Irstea, 2 Rue Papeterie, F-38402 St Martin Dheres, France.
Univ Paris Saclay, Lab Sci Climat & Environm, Inst Pierre Simon Laplace, CEA,CNRS,UVSQ,UMR8212, F-91191 Gif Sur Yvette, France.
VN Sukachev Inst Forest, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, RU-660041 Krasnoyarsk, Russia.
William Paterson Univ, Dept Environm Sci, Wayne, NJ 07470 USA.
Univ Arizona, Columbia Univ, Lamont Doherty Earth Observ, Palisades, NY 10964 USA.
CNRS, UMR 7299, CCJ, Maison Mediterraneenne Sci Homme 5 Rue Chateau, F-13094 Aix En Provence, France.
Chinese Acad Sci, Inst Geog Sci & Nat Resources, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China.
Chinese Acad Sci, Ctr Excellence & Innovat Tibetan Plateau Earth Sy, Beijing 100101, Peoples R China.
Univ Western Ontario, Dept Geog, 1151 Richmond St, London, ON N6A 5C2, Canada.
Aix Marseille Univ, CNRS, IRD, Coll France,CEREGE,ECCOREV, F-13545 Aix En Provence, France.
Univ Cambridge, Dept Geog, Downing Pl, Cambridge CB2 3EN, England.

Доп.точки доступа:
Guillet, Sebastien; Corona, Christophe; Stoffel, Markus; Khodri, Myriam; Lavigne, Franck; Ortega, Pablo; Eckert, Nicolas; Sielenou, Pascal Dkengne; Daux, Valerie; Churakova, O. V.; Davi, Nicole; Edouard, Jean-Louis; Zhang, Yong; Luckman, Brian H.; Myglan, Vladimir S.; Guiot, Joel; Beniston, Martin; Masson-Delmotte, Valerie; Oppenheimer, Clive; Era.Net RUSplus project ELVECS (SNF) [IZRPZ0_164735]; Russian Science Foundation [15-14-30011]

/ L. V. Belokopytova [et al.] // Contemp. Probl. Ecol. - 2018. - Vol. 11, Is. 4. - P366-376, DOI 10.1134/S1995425518040030. - Cited References:68. - The study was supported by the Russian Foundation for Basic Research (project no. 17-04-00315). . - ISSN 1995-4255. - ISSN 1995-4263РУБ Ecology

Аннотация: We compared three approaches to study climatic signals of Pinus sylvestris and Larix sibirica treering width chronologies from the forest-steppe zone of South Siberia, where both temperature and precipitation limit the conifer tree growth: 1-paired correlation of chronologies with monthly climatic variables; 2- paired and partial correlations with monthly and seasonal series of primary and secondary climatic factors, calculated in the Seascorr program; 3-paired correlation with a 15-day moving average series of climatic variables. The comparison showed that simple paired correlation with monthly series as the simplest approach could be used for a wide range of dendroclimatic studies, both as a main procedure and for preliminary analysis. The Seascorr analysis is the most suitable for assessing climate-growth relationship in extreme growth conditions and for reconstructions of extremes, e.g. droughts, and of their impact periods. The application of the 15-day moving average series is limited by availability of daily climatic data, but it describes the seasonal window of climatic response with high precision. Altogether, the combination of three approaches allowed to explore the spatial-temporal pattern of the conifers radial growth climatic response in South Siberia.

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Siberian Fed Univ, Khakas Tech Inst, Abakan 655017, Russia.
Univ Arizona, Lab Tree Ring Res, Tucson, AZ 85721 USA.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Sukachev Inst Forest, Siberian Branch, Akad Gorodok 50-28, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Belokopytova, L. V.; Babushkina, E. A.; Zhirnova, D. F.; Panyushkina, I. P.; Vaganov, E. A.; Russian Foundation for Basic Research [17-04-00315]

/ O. V. Churakova [et al.] // Clim. Past. - 2019. - Vol. 15, Is. 2. - P685-700, DOI 10.5194/cp-15-685-2019. - Cited References:91. - This work was supported by a Marie Curie International Incoming Fellowship (EU_ISOTREC 235122), a Reintegration Marie Curie Fellowship (909122), and grants to the following: a UFZ scholarship (2006), RFBR (09-05-98015_r_sibir_a), granted to Olga V. Churakova (Sidorova); SNSF to Matthias Saurer (200021_ 121838/1); an Era. Net RusPlus project granted to Markus Stoffel (SNF IZRPZ0_ 164735); RFBR (no. 16-55-76012 Era_ a) granted to Eugene A. Vaganov; and a project grant to Vladimir S. Myglan RNF, Russian Scientific Fund (no. 15-14-30011). Alexander V. Kirdyanov was supported by the Ministry of Education and Science of the Russian Federation (no. 5.3508.2017/4.6) and RSF (no. 14-14-00295). We acknowledge a Scientific School (3297.2014.4) grant to Eugene A. Vaganov, US National Science Foundation (NSF) grants (no. 9413327, no. 970966, no. 0308525) to Malcolm K. Hughes, and US CRDF grant no. RC1-279 to Malcolm K. Hughes and Eugene A. Vaganov. We thank Tatjana Boettger for her support and access to the stable isotope facilities within the framework of the UFZ Haale/Saale scholarship 2006 and stable isotope facilities at the Paul Scherrer Institute (PSI), Switzerland; we thank Anne Verstege and Daniel Nievergelt for their help with sample preparation for the MXD and Paolo Cherubini for providing lab access at the Swiss Federal Institute for Forest, Snow and Landscape Research (WSL). . - ISSN 1814-9324. - ISSN 1814-9332РУБ Geosciences, Multidisciplinary + Meteorology & Atmospheric Sciences

Аннотация: Stratospheric volcanic eruptions have far-reaching impacts on global climate and society. Tree rings can provide valuable climatic information on these impacts across different spatial and temporal scales. To detect temperature and hydroclimatic changes after strong stratospheric Common Era (CE) volcanic eruptions for the last 1500 years (535 CE unknown, 540 CE unknown, 1257 CE Samalas, 1640 CE Parker, 1815 CE Tambora, and 1991 CE Pinatubo), we measured and analyzed tree-ring width (TRW), maximum late-wood density (MXD), cell wall thickness (CWT), and delta C-13 and delta O-18 in tree-ring cellulose chronologies of climate-sensitive larch trees from three different Siberian regions (northeastern Yakutia - YAK, eastern Taimyr - TAY, and Russian Altai - ALT). All tree-ring proxies proved to encode a significant and specific climatic signal of the growing season. Our findings suggest that TRW, MXD, and CWT show strong negative summer air temperature anomalies in 536, 541-542, and 1258-1259 at all studied regions. Based on delta C-13, 536 was extremely humid at YAK, as was 537-538 in TAY. No extreme hydroclimatic anomalies occurred in Siberia after the volcanic eruptions in 1640, 1815, and 1991, except for 1817 at ALT. The signal stored in delta O-18 indicated significantly lower summer sunshine duration in 542 and 1258-1259 at YAK and 536 at ALT. Our results show that trees growing at YAK and ALT mainly responded the first year after the eruptions, whereas at TAY, the growth response occurred after 2 years. The fact that differences exist in climate responses to volcanic eruptions - both in space and time - underlines the added value of a multiple tree-ring proxy assessment. As such, the various indicators used clearly help to provide a more realistic picture of the impact of volcanic eruption on past climate dynamics, which is fundamental for an improved understanding of climate dynamics, but also for the validation of global climate models.

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Univ Geneva, Inst Environm Sci, 66 Bvd Carl Vogt, CH-1205 Geneva, Switzerland.
Siberian Fed Univ, Inst Ecol & Geog, Svobodny Pr 79, Krasnoyarsk 660041, Russia.
Swiss Fed Inst Forest Snow & Landscape Res WSL, Zurcherstr 111, CH-8903 Birmensdorf, Switzerland.
Paul Scherrer Inst, CH-5232 Villigen, Switzerland.
Univ Blaise Pascal, Geolab, CNRS, UMR 6042, 4 Rue Ledru, F-63057 Clermont Ferrand, France.
Siberian Fed Univ, Inst Humanities, Svobodny Pr 82, Krasnoyarsk 660041, Russia.
RAS, VN Sukachev Inst Forest, SB, Fed Res Ctr Krasnoyarsk Sci Ctr, Akademgorodok 50,Bldg 28, Krasnoyarsk 660036, Russia.
Univ Cambridge, Dept Geog, Downing Pl, Cambridge CB2 3EN, England.
Siberian Fed Univ, Inst Fundamental Biol & Biotechnol, Svobodny Pr 79, Krasnoyarsk 660041, Russia.
Univ Arizona, Lab Tree Ring Res, 1215 E Lowell St, Tucson, AZ 85721 USA.
Siberian Fed Univ, Rectorate, Svobodny Pr 79-10, Krasnoyarsk 660041, Russia.
Univ Geneva, Dept Earth Sci, 13 Rue Maraichers, CH-1205 Geneva, Switzerland.
Univ Geneva, Dept FA Forel Environm & Aquat Sci, 66 Blvd Carl Vogt, CH-1205 Geneva, Switzerland.

Доп.точки доступа:
Churakova, O. V.; Fonti, Marina V.; Saurer, Matthias; Guillet, Sebastien; Corona, Christophe; Fonti, Patrick; Myglan, Vladimir S.; Kirdyanov, Alexander V.; Naumova, Oksana V.; Ovchinnikov, Dmitriy V.; Shashkin, Alexander V.; Panyushkina, Irina P.; Buntgen, Ulf; Hughes, Malcolm K.; Vaganov, Eugene A.; Siegwolf, Rolf T. W.; Stoffel, Markus; Churakova, Olga; Marie Curie International Incoming Fellowship [EU_ISOTREC 235122]; Reintegration Marie Curie Fellowship [909122]; RFBR [16-55-76012, 09-05-98015_r_sibir_a]; SNSF [200021_ 121838/1, SNF IZRPZ0_ 164735]; Russian Scientific Fund [15-14-30011]; Ministry of Education and Science of the Russian Federation [5.3508.2017/4.6]; RSF [14-14-00295, 3297.2014.4]; US National Science Foundation (NSF) [9413327, 970966, 0308525]; US CRDF [RC1-279]

/ T. A. Shestakova [et al.] // Agric. For. Meteorol. - 2019. - Vol. 268. - P318-330, DOI 10.1016/j.agrformet.2019.01.039. - Cited References:73. - This study was funded by the European Union's Seventh Framework Programme (INTERACT project), grant agreement SYNCHROTREES, the Spanish Government (grant number AGL2015-68274-C3-3-R) and the Russian Science Foundation (project number 18-14-00072). . - ISSN 0168-1923. - ISSN 1873-2240РУБ Agronomy + Forestry + Meteorology & Atmospheric Sciences

Аннотация: High-latitude terrestrial ecosystems are crucial to the global climate system and its regulation by vegetation. Since productivity of boreal forests is much limited by low summer temperatures, it is expected that trees subjected to warming are progressively decreasing their regional growth coherence in the last decades. In this study, we used a comprehensive network of indexed ring-width records to assess 20th-century spatiotemporal patterns of climatic sensitivity of forest growth around the Urals mountain range above 60 degrees N (ca. 750,000 km(2)). This area offers an excellent opportunity to test for warming effects as most north Eurasian conifers (including Larix, Picea and Pinus species) are found along a north-to-south temperature gradient across contrasting soil hydrothermal regimes (permafrost and permafrost-free). We observed positive associations between indexed ring-width and summer temperature over the past century, decreasing southwards. However, weaker (permafrost) or non-significant (permafrost-free) relationships were consistently found at the local and regional scales after 1960. A cointegration analysis indicated that tree-growth release from cold limitation significantly reduced the degree and spatial extent of synchronous growth at short- (annual) and long-term (decadal) scales, most likely by exposing forests to endogenous (local) factors (e.g., competition, soil properties, nutrient availability) and species-specific reactions. Whereas the loss of temperature sensitivity progressively reduced non-permafrost synchrony by 50% over the whole 20th century, permafrost forests decreased their synchrony only after the 1960s, by 20%. Radial growth was enhanced in permafrost sites, as suggested by increasing basal area increment. Our results unequivocally link a substantial decrease in temporal coherence of forest productivity in boreal ecosystems to a growth release from cold limitation that is concurrent with regional warming trends. This emerging pattern points to increasing dependence on local drivers of the carbon balance and the role as carbon sinks of forests in the northern Ural region.

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Univ Lleida, Dept Crop & Forest Sci, AGROTECNIO Ctr, Avda Rovira Roure 191, Lleida 25198, Spain.
Sukachev Inst Forest, Akademgorodok 50-28, Krasnoyarsk 660036, Russia.
Univ Barcelona, Dept Evolutionary Biol Ecol & Environm Sci, Avda Diagonal 643, E-08028 Barcelona, Spain.
Yugra State Univ, UNESCO Chair Environm Dynam & Climate Change, St Chekhova 16, Khanty Mansiysk 628012, Russia.

Доп.точки доступа:
Shestakova, T. A.; Gutierrez, E.; Valeriano, C.; Lapshina, E.; Voltas, J.; Gutierrez, Emilia; Shestakova, Tatiana; Lapshina, Elena; European Union's Seventh Framework Programme (INTERACT project), grant agreement SYNCHROTREES; Spanish Government [AGL2015-68274-C3-3-R]; Russian Science Foundation [18-14-00072]

/ U. Buntgen, D. Arseneault, E. Boucher [et al.] // Dendrochronologia. - 2020. - Vol. 64. - Ст. 125757, DOI 10.1016/j.dendro.2020.125757. - Cited References:87. - We are thankful to everyone who made the raw tree-ring data available. Bruce Campbell, Nicola Di Cosmo, Rashit Hantemirov, Joe McConnell, Raphael Neukom, Rob Wilson, and two anonymous referees kindly commented on earlier versions of the manuscript. U.B. received funding from SustES -Adaptation strategies for sustainable ecosystem services and food security under adverse environmental conditions (CZ.02.1.01/0.0/0.0/16_019/0000797). F.C.L. was supported by the Swedish Research Council (grant no 2018-01272). J.L. thanks for the support by the East Africa Peru India Climate Capacities (EPICC) project. M. McC. acknowledges support from the Initiative for the Science of the Human Past at Harvard (SoHP). This project is part of the International Climate Initiative (IKI). The Federal Ministry for the Environment, Nature Conservation and Nuclear Safety (BMU) supports this initiative on the basis of a decision adopted by the German Bundestag. A.V.K. received funding from the Russian Science Foundation (grant 18-1400072). M.S. acknowledges funding from the ERC under the European Union's Horizon 2020 research and innovation programme (grant agreement No 820047). D.A and E.B acknowledge support from the National Sciences and Engineering Research Council"(NSERC), and E.A. V. was supported by the Russian Science Foundation (No 19-77-30015). . - ISSN 1125-7865. - ISSN 1612-0051РУБ Forestry + Geography, Physical

Аннотация: Climate reconstructions for the Common Era are compromised by the paucity of annually-resolved and absolutely-dated proxy records prior to medieval times. Where reconstructions are based on combinations of different climate archive types (of varying spatiotemporal resolution, dating uncertainty, record length and predictive skill), it is challenging to estimate past amplitude ranges, disentangle the relative roles of natural and anthropogenic forcing, or probe deeper interrelationships between climate variability and human history. Here, we compile and analyse updated versions of all the existing summer temperature sensitive tree-ring width chronologies from the Northern Hemisphere that span the entire Common Era. We apply a novel ensemble approach to reconstruct extra-tropical summer temperatures from 1 to 2010 CE, and calculate uncertainties at continental to hemispheric scales. Peak warming in the 280s, 990s and 1020s, when volcanic forcing was low, was comparable to modern conditions until 2010 CE. The lowest June-August temperature anomaly in 536 not only marks the beginning of the coldest decade, but also defines the onset of the Late Antique Little Ice Age (LALIA). While prolonged warmth during Roman and medieval times roughly coincides with the tendency towards societal prosperity across much of the North Atlantic/European sector and East Asia, major episodes of volcanically-forced summer cooling often presaged widespread famines, plague outbreaks and political upheavals. Our study reveals a larger amplitude of spatially synchronized summer temperature variation during the first millennium of the Common Era than previously recognised.

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Держатели документа:
Univ Cambridge, Dept Geog, Cambridge CB2 3EN, England.
Swiss Fed Res Inst WSL, CH-8903 Birmensdorf, Switzerland.
Global Change Res Ctr CzechGlobe, Brno 60300, Czech Republic.
Masaryk Univ, Dept Geog, Fac Sci, Brno 61300, Czech Republic.
Univ Quebec, Dept Biol Chem & Geog, Rimouski, PQ G5L 3A1, Canada.
Univ Quebec, Dept Geog, Montreal, PQ H2X 3R9, Canada.
Siberian Fed Univ, Inst Ecol & Geog, Krasnoyarsk 660041, Russia.
Siberian Fed Univ, Inst Humanities, Krasnoyarsk 660041, Russia.
Univ Quebec Abitibi Temiscamingue, Forest Res Inst, Amos, PQ J9T 2L8, Canada.
Univ Arizona, Lab Tree Ring Res, Tucson, AZ 85721 USA.
Sukachev Inst Forest SB RAS, Krasnoyarsk 660036, Russia.
Justus Liebig Univ, Dept Geog, D-35390 Giessen, Germany.
Stockholm Univ, Dept Phys Geog, S-10691 Stockholm, Sweden.
Univ Gothenburg, Dept Earth Sci, Reg Climate Grp, S-40530 Gothenburg, Sweden.
Stockholm Univ, Dept Hist, S-10691 Stockholm, Sweden.
Stockholm Univ, Bolin Ctr Climate Res, S-10691 Stockholm, Sweden.
Swedish Coll Adv Study, S-15238 Uppsala, Sweden.
Potsdam Inst Climate Impact Res PIK, D-14473 Potsdam, Germany.
Harvard Univ, Dept Hist, Initiat Sci Human Past Harvard, Cambridge, MA 02138 USA.
Harvard Univ, Max Planck Harvard Res Ctr Archaeosci Ancient Med, Cambridge, MA 02138 USA.
Univ Innsbruck, Dept Geog, A-6020 Innsbruck, Austria.
Johannes Gutenberg Univ Mainz, Dept Geog, D-55099 Mainz, Germany.
Univ Bern, Climate & Environm Phys CEP, Phys Inst, CH-3012 Bern, Switzerland.
Univ Bern, Oeschger Ctr Climate Change Res OCCR, CH-3012 Bern, Switzerland.

Доп.точки доступа:
Buntgen, U.; Arseneault, Dominique; Boucher, Etienne; Churakova, O. V.; Gennaretti, Fabio; Crivellaro, Alan; Hughes, Malcolm K.; Kirdyanov, Alexander V.; Kippel, Lara; Krusic, Paul J.; Linderholm, Hans W.; Ljungqvist, Fredrik C.; Ludescher, Josef; McCormick, Michael; Myglan, Vladimir S.; Nicolussi, Kurt; Piermattei, Alma; Oppenheimer, Clive; Reinig, Frederick; Sigl, Michael; Vaganov, Eugene A.; Esper, Jan; SustES -Adaptation strategies for sustainable ecosystem services and food security under adverse environmental conditions [CZ.02.1.01/0.0/0.0/16_019/0000797]; Swedish Research CouncilSwedish Research Council [2018-01272]; East Africa Peru India Climate Capacities (EPICC) project; Initiative for the Science of the Human Past at Harvard (SoHP); Federal Ministry for the Environment, Nature Conservation and Nuclear Safety (BMU); Russian Science FoundationRussian Science Foundation (RSF) [18-1400072, 19-77-30015]; ERC under the European Union's Horizon 2020 research and innovation programme [820047]; National Sciences and Engineering Research Council"(NSERC)Natural Sciences and Engineering Research Council of Canada

/ U. Buntgen, S. H. Smith, S. Wagner [et al.] // Clim. Dyn. - 2022, DOI 10.1007/s00382-022-06141-3. - Cited References:96. - Two anonymous referees kindly commented on earlier versions of this manuscript. We are particularly thankful to all producers and contributors of tree-ring data, which were obtained via the ITRDB (https://www.ncei.noaa.gov/products/paleoclima tology/tree-ring), or compiled by Steffen Walz (who was responsible for data collection and preparation during an initial phase of this project). Ulf Buntgen and Jan Esper received support from the SustES projectAdaptation strategies for sustainable ecosystem services and food security under adverse environmental conditions (CZ.02.1.01/0.0/0.0/16_0 19/0000797), and the ERC Advanced project Monostar (AdG 882727). . - Article in press. - ISSN 0930-7575. - ISSN 1432-0894РУБ Meteorology & Atmospheric Sciences

Аннотация: The largest explosive volcanic eruption of the Common Era in terms of estimated sulphur yield to the stratosphere was identified in glaciochemical records 40 years ago, and dates to the mid-thirteenth century. Despite eventual attribution to the Samalas (Rinjani) volcano in Indonesia, the eruption date remains uncertain, and the climate response only partially understood. Seeking a more global perspective on summer surface temperature and hydroclimate change following the eruption, we present an analysis of 249 tree-ring chronologies spanning the thirteenth century and representing all continents except Antarctica. Of the 170 predominantly temperature sensitive high-frequency chronologies, the earliest hints of boreal summer cooling are the growth depressions found at sites in the western US and Canada in 1257 CE. If this response is a result of Samalas, it would be consistent with an eruption window of circa May-July 1257 CE. More widespread summer cooling across the mid-latitudes of North America and Eurasia is pronounced in 1258, while records from Scandinavia and Siberia reveal peak cooling in 1259. In contrast to the marked post-Samalas temperature response at high-elevation sites in the Northern Hemisphere, no strong hydroclimatic anomalies emerge from the 79 precipitation-sensitive chronologies. Although our findings remain spatially biased towards the western US and central Europe, and growth-climate response patterns are not always dominated by a single meteorological factor, this study offers a global proxy framework for the evaluation of paleoclimate model simulations.

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Держатели документа:
Univ Cambridge, Dept Geog, Cambridge CB2 3EN, England.
Czech Acad Sci, Global Change Res Inst CzechGlobe, Brno 60300, Czech Republic.
Masaryk Univ, Fac Sci, Dept Geog, Brno 61137, Czech Republic.
Swiss Fed Res Inst WSL, CH-8903 Birmensdorf, Switzerland.
Helmholtz Zentrum Hereon, Inst Coastal Syst Anal & Modeling, D-21502 Geesthacht, Germany.
Stockholm Univ, Dept Phys Geog, S-10691 Stockholm, Sweden.
Johannes Gutenberg Univ Mainz, Dept Geog, D-55099 Mainz, Germany.
Stefan Cel Mare Univ Suceava, Fac Forestry, Forest Biometr Lab, Suceava 720229, Romania.
Albert Ludwig Univ Freiburg, Inst Forest Sci, Chair Forest Growth & Dendroecol, Tennenbacherstr 4, D-79106 Freiburg, Germany.
Siberian Fed Univ, Inst Ecol & Geog, Krasnoyarsk 660041, Russia.
SB RAS, Fed Res Ctr, VN Sukachev Inst Forest, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Buntgen, U.; Smith, Sylvie Hodgson; Wagner, Sebastian; Krusic, Paul; Esper, Jan; Piermattei, Alma; Crivellaro, Alan; Reinig, Frederick; Tegel, Willy; Kirdyanov, Alexander; Trnka, Mirek; Oppenheimer, Clive; SustES projectAdaptation strategies for sustainable ecosystem services and food security under adverse environmental conditions [CZ.02.1.01/0.0/0.0/16_0 19/0000797]; ERC Advanced project Monostar [AdG 882727]