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Samuli Helama Division of Geology and Palaeontology Department of Geology P. O. Box 64 FIN-00014 University of Helsinki, Finland ACADEMIC DISSERTATION To be presented, with the permission of the Faculty of Science of the University of Helsinki, for public criticism in the small auditorium E204 of Physicum, Kumpula, Samuli Helama • Birgitte W. Arentoft Olivier Collin-Haubensak • Michael D. Hyslop Charlotte K. Brandstrup • Hanna M. Ma¨kela¨ QinHua Tian • Rob Wilson Dendroclimatic signals deduced from riparian versus upland forest interior pines in North Karelia, Finland Received: 25 April 2013/ Accepted: 6 September 2013 The Ecological Society of Markku Oinonen & Samuli Helama A recent study published in an esteemed academic journal indicates that volcanic eruptions in the mid 500s resulted in an unusually gloomy and cold period. A joint research project of the Chronology Laboratory of the Finnish Museum of Natural History and Natural Resources Institute Finland (Luke) suggests that the years 536 and 541–544 CE were very difficult Samuli Helama, Finnish Forest Research Institute, Rovaniemi Unit, PO Box 16, FI-96301 Rovaniemi, Finland. E-mail: samuli.helama@metla.fi Abstract Geochronological data of the conifer tree rings in a region sensitive to climatic effects of explosive eruptions were analysed for sudden growth reductions in Cross-dating is considered one of the most important principles of dendrochronology. The first known cross-dating attempts, conducted between the years 1737 and 1783 by independent researchers in France, Germany, and Sweden, were related to the identification of growth rings believed to have formed during the harsh winter of 1708–1709. Samuli Helama. Annual temperatures are generally rising in the northern hemisphere, but the trend is not that clear in Finland.
43(2) 2012 Suomen kasvifenologisista havainnoista 1700-luvun puolivälistä nykypäivään Jari Holopainen, Hilppa Gregow, Samuli Helama, Eero Kubin . Torikka ; med bidrag av Matti Saarnisto och Samuli Helama. Boken är en detaljrik översikt över folklivet och livsbetingelserna i övre Tornedalen 1539- 1617.>
Hannele Helama ·
Här är vårens studenter 2015 Vastranyland.fi
samuli.helama@luke.fi. 2 Laboratory of Chronology, Finnish Museum of Natural History, Gustaf Hällströmin katu 2, University of Helsinki, Helsinki, Finland.
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Osta kirja Kuva kuvas Samuli Helama (ISBN 9789518770582) osoitteesta Adlibris.fi. Ilmainen Jan Esper, Carol Griggs, Björn Gunnarson, Björn Günther, Emilia Gutierrez, Kristof Haneca, Samuli Helama, Franz Herzig, Karl-Uwe Heussner, Jutta Hofmann Conchology of endangered freshwater pearl mussel: conservation palaeobiology applied to museum shells originating from northern Finland. Samuli Helama* 12:00 Samuli Helama, METLA, Dendrochronology of oaks (in Finnish). 12:30 Lunch break. 13:30 Sten Ridderlöf, vice chairman, Föreningen för Dendrologi och Jul 25, 2020 Alar Läänelaid Tartu University, Vanemuise St. 46, 51003 Tartu, Estonia · Samuli Helama Natural Resources Institute Finland, Ounasjoentie 6, EDIT, duunikuva 3. PALASINA, MUTTA EI RIKKI VII, iso kuva 1. IMG_5081 cccc.
The Holocene 12 (6): 681-687. 2.
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Helama, Samuli. “Ernest Hemingway’s Description of the Mountaintop in ‘The Snows of Kilimanjaro’ and Climate Change Research.” Hemingway Review 34, no.
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Prover som tagits från trädens årsringar analyseras på variationerna i ”Om förhållandena är gynnsamma blir årsringarna breda, medan dålig tillväxt ger smala ringar”, berättar Samuli Helama som arbetar med till 1610-talets Tornedalen samt förberedande arbete för vidare forskning och studier / av Sture Torikka ; med bidrag av Matti Saarnisto och Samuli Helama. Stefan Norrgård, Samuli Helama. Kultur, historia och filosofi. Forskningsoutput: Tidskriftsbidrag › Artikel › Vetenskaplig › Peer review. 1 Nedladdningar (Pure). av S Norrgård · 2021 · Citerat av 1 — and Helama S. 2019. Historical trends in spring ice breakup for the Aura River in Southwest Finland, AD 1749–2018.
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Samuli Helama, Thomas M Melvin, and Keith R Briffa. The Holocene 2016 27: 1, 172-177 Download Citation. If you have the appropriate software installed, you can 1 Natural Resources Institute Finland, Eteläranta 55, Rovaniemi, Finland. samuli.helama@luke.fi.
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