Citations (26)
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Ann Delwaide, Hugo Asselin, Dominique Arseneault, Claude Lavoie & Serge Payette. (2021) A 2233-year tree-ring chronology of subarctic black spruce (Picea mariana): growth forms response to long-term climate change. Écoscience 28:3-4, pages 399-419.
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Samuli Helama, Jari Holopainen, Marc Macias-Fauria, Mauri Timonen & Kari Mielikäinen. (2013) A chronology of climatic downturns through the mid- and late-Holocene: tracing the distant effects of explosive eruptions from palaeoclimatic and historical evidence in northern Europe. Polar Research 32:1.
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Articles from other publishers (24)
Tatiana Bebchuk, Paul J. Krusic, Joshua H. Pike, Alma Piermattei, Ronny Friedrich, Lukas Wacker, Alan Crivellaro, Tito Arosio, Alexander V. Kirdyanov, Philip Gibbard, David Brown, Jan Esper, Frederick Reinig & Ulf Büntgen. (2024) Sudden disappearance of yew (Taxus baccata) woodlands from eastern England coincides with a possible climate event around 4.2 ka ago. Quaternary Science Reviews 323, pages 108414.
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Samuli Helama, Hannu Herva, Joonas Uusitalo, Andy Moir, Kari Mielikäinen, Pekka Nöjd, Markku Oinonen & Raimo Sutinen. (2023)
Depositional history of peatland pines (
Pinus sylvestris
L.) in NW Enontekiö, Finnish Lapland: implications for Middle Holocene drought and temperature fluctuations
. Boreas 52:3, pages 427-439.
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Sturt W. Manning. 2023. Handbook of Archaeological Sciences. Handbook of Archaeological Sciences
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Joonas Uusitalo, Laura Arppe, Samuli Helama, Kenichiro Mizohata, Kari Mielikäinen, Harri Mäkinen, Pekka Nöjd, Mauri Timonen & Markku Oinonen. (2022) From lakes to ratios: 14C measurement process of the Finnish tree-ring research consortium. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 519, pages 37-45.
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R. M. Hantemirov, S. G. Shiyatov, L. A. Gorlanova, V. V. Kukarskih, A. Yu. Surkov, I. R. Hamzin, P. Fonti & L. Wacker. (2021) An 8768-year Yamal Tree-ring Chronology as a Tool for Paleoecological Reconstructions. Russian Journal of Ecology 52:5, pages 419-427.
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F. Miyake, I. P. Panyushkina, A. J. T. Jull, F. Adolphi, N. Brehm, S. Helama, K. Kanzawa, T. Moriya, R. Muscheler, K. Nicolussi, M. Oinonen, M. Salzer, M. Takeyama, F. Tokanai & L. Wacker. (2021)
A Single‐Year Cosmic Ray Event at 5410 BCE Registered in
14
C of Tree Rings
. Geophysical Research Letters 48:11.
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Claudia Hartl, Elisabeth Düthorn, Ernesto Tejedor, Andreas J. Kirchhefer, Mauri Timonen, Steffen Holzkämper, Ulf Büntgen & Jan Esper. (2021) Micro-site conditions affect Fennoscandian forest growth. Dendrochronologia 65, pages 125787.
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F Terrasi, F Marzaioli, R Buompane, I Passariello, G Porzio, M Capano, S Helama, M Oinonen, P Nöjd, J Uusitalo, A J T Jull, I P Panyushkina, C Baisan, M Molnar, T Varga, G Kovaltsov, S Poluianov & I Usoskin. (2020)
CAN THE
14
C PRODUCTION IN 1055 CE BE AFFECTED BY SN1054?
. Radiocarbon 62:5, pages 1403-1418.
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J. Tintner, B. Spangl, M. Grabner, S. Helama, M. Timonen, A. J. Kirchhefer, F. Reinig, D. Nievergelt, M. Krąpiec & E. Smidt. (2020) MD dating: molecular decay (MD) in pinewood as a dating method. Scientific Reports 10:1.
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J. Uusitalo, L. Arppe, T. Hackman, S. Helama, G. Kovaltsov, K. Mielikäinen, H. Mäkinen, P. Nöjd, V. Palonen, I. Usoskin & M. Oinonen. (2018) Solar superstorm of AD 774 recorded subannually by Arctic tree rings. Nature Communications 9:1.
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Knut Kaiser, Silke Oldorff, Carsten Breitbach, Christoph Kappler, Martin Theuerkauf, Tobias Scharnweber, Manuela Schult, Mathias Küster, Christof Engelhardt, Ingo Heinrich, Michael Hupfer, Grit Schwalbe, Tom Kirschey & Oliver Bens. (2018) A submerged pine forest from the early Holocene in the Mecklenburg Lake District, northern Germany. Boreas 47:3, pages 910-925.
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Elena A. Kasatkina, Oleg I. Shumilov, Mauri Timonen & Alexander G. Kanatjev. (2018) Impact of powerful volcanic eruptions and solar activity on the climate above the Arctic Circle. Geofísica Internacional 57:1.
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Samuli Helama, Laura Arppe, Joonas Uusitalo, Hanna M. Mäkelä, Markku Oinonen & Kari Mielikäinen. (2016) Coexisting responses in tree-ring δ 13 C to high-latitude climate variability under elevated CO 2 : A critical examination of climatic effects and systematic discrimination rate changes. Agricultural and Forest Meteorology 226-227, pages 199-212.
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Peng Zhang, Hans W. Linderholm, Björn E. Gunnarson, Jesper Björklund & Deliang Chen. (2016) 1200 years of warm-season temperature variability in central Scandinavia inferred from tree-ring density. Climate of the Past 12:6, pages 1297-1312.
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Samuli Helama, Laura Arppe, Mauri Timonen, Kari Mielikäinen & Markku Oinonen. (2015) Age-related trends in subfossil tree-ring δ13C data. Chemical Geology 416, pages 28-35.
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Mauri Timonen, Jianmin Jiang, Samuli Helama & Kari Mielikäinen. (2014) Significant changes of subseries-means in the Finnish tree-ring index of 7638 years, with comparisons to glaciological evidence from Greenland and Alps. Quaternary International 319, pages 143-149.
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Samuli Helama, Birgitte W. Arentoft, Olivier Collin-Haubensak, Michael D. Hyslop, Charlotte K. Brandstrup, Hanna M. Mäkelä, QinHua Tian & Rob Wilson. (2013) Dendroclimatic signals deduced from riparian versus upland forest interior pines in North Karelia, Finland. Ecological Research 28:6, pages 1019-1028.
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P. D Jones, T. M. Melvin, C. Harpham, H. Grudd & S. Helama. (2013) Cool North European summers and possible links to explosive volcanic eruptions. Journal of Geophysical Research: Atmospheres 118:12, pages 6259-6265.
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Catherina Ertl, Anna-Mari Pessi, Antti Huusko, Sheila Hicks, Eero Kubin & Saini Heino. (2012) Assessing the proportion of “extra-local” pollen by means of modern aerobiological and phenological records — An example from Scots pine (Pinus sylvestris L.) in northern Finland. Review of Palaeobotany and Palynology 185, pages 1-12.
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Samuli Helama, Heikki Seppä, Anne E. Bjune & H. John B. Birks. (2012) Fusing pollen-stratigraphic and dendroclimatic proxy data to reconstruct summer temperature variability during the past 7.5 ka in subarctic Fennoscandia. Journal of Paleolimnology 48:1, pages 275-286.
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Björn E. Gunnarson, Hans W. Linderholm & Anders Moberg. (2010) Improving a tree-ring reconstruction from west-central Scandinavia: 900 years of warm-season temperatures. Climate Dynamics 36:1-2, pages 97-108.
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Samuli Helama, Heikki Seppä, H. John B. Birks & Anne E. Bjune. (2010) Reconciling pollen-stratigraphical and tree-ring evidence for high- and low-frequency temperature variability in the past millennium. Quaternary Science Reviews 29:27-28, pages 3905-3918.
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H. W. Linderholm, J. A. Björklund, K. Seftigen, B. E. Gunnarson, H. Grudd, J.-H. Jeong, I. Drobyshev & Y. Liu. (2010) Dendroclimatology in Fennoscandia – from past accomplishments to future potential. Climate of the Past 6:1, pages 93-114.
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Samuli Helama, Mauri Timonen, Jari Holopainen, Maxim G. Ogurtsov, Kari Mielikäinen, Matti Eronen, Markus Lindholm & Jouko Meriläinen. (2009) Summer temperature variations in Lapland during the Medieval Warm Period and the Little Ice Age relative to natural instability of thermohaline circulation on multi‐decadal and multi‐centennial scales. Journal of Quaternary Science 24:5, pages 450-456.
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