Samuli Helama

Senior Scientist
  • Phone number +358295325047
  • Email address samuli.helama@luke.fi
  • Address Ounasjoentie 6 96200 ROVANIEMI

Climatic, weather, and socio-economic conditions corresponding to the mid-17th-century eruption cluster

Refereed scientific publications
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2022

Use, calibration and verification of agroecological models for boreal environments: A review

Refereed scientific publications
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2022

Subfossil Scots Pine (Pinus sylvestris L.) Wood from Northern Finland—Physical, Mechanical, and Chemical Properties and Suitability for Specialty Products

Refereed scientific publications
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2022

From lakes to ratios: 14C measurement process of the Finnish tree-ring research consortium

Refereed scientific publications
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2022

The Integrated Use of Dendrochronological Data and Paleoecological Records From Northwest European Peatlands and Lakes for Understanding Long-Term Ecological and Climatic Changes—A Review

Refereed scientific publications
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2022

Solar-type periodicities in the climate variability of Northern Fennoscandia during the last three centuries: Real influence of solar activity or natural instability in the climate system

Refereed scientific publications
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2022

Death assemblages of the freshwater mussels Unio crassus and U. tumidus (Bivalvia, Unionidae) from southern Finland: comparing taphonomical data with 14C dates

Refereed scientific publications
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2021

The influence of decision-making in tree ring-based climate reconstructions

Refereed scientific publications
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2021

A single‐year cosmic ray event at 5410 BCE registered in 14C of tree rings

Refereed scientific publications
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2021

Dendroclimatic investigations and cross-dating in the 1700s: the tree-ring investigations of Johan Leche (1704–1764) in southwestern Finland

Refereed scientific publications
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2021

Recurrent transitions to Little Ice Age-like climatic regimes over the Holocene

Refereed scientific publications
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2021

Can the 14C production in 1055 CE be affected by SN1054?

Refereed scientific publications
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2020

Combining the archives of nature and society: Tree rings and tithes

Other publications
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2020

Forest carbon sink neutralized by pervasive growth-lifespan trade-offs

Refereed scientific publications
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2020

White pine and Scots pine tree-ring chronologies as indicators of climate-related non-native and native tree growth patterns in Estonia

Refereed scientific publications
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2020

Assessing the signals of the Hale solar cycle in temperature proxy records from Northern Fennoscandia

Refereed scientific publications
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2020

MD dating: molecular decay (MD) in pinewood as a dating method

Refereed scientific publications
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2020

Finnish National Phenological Network 1997–2017: from observations to trend detection

Refereed scientific publications
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2020

Growth patterns of roadside Tilia spp. affected by climate and street maintenance in Helsinki

Refereed scientific publications
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2020

Subaerially preserved remains of pine stemwood as indicators of late Holocene timberline fluctuations in Fennoscandia, with comparisons of tree-ring and 14C dated depositional histories of subfossil trees from dry and wet sites

Refereed scientific publications
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2020

Buried in water, burdened by nature—Resilience carried the Iron Age people through Fimbulvinter

Refereed scientific publications
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2020

Comment on “Absence of Age‐Related Trends in Stable Oxygen Isotope Ratios From Oak Tree Rings” by Duffy et al. (2019)

Refereed scientific publications
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2020

Climatic determinants of introduced Sitka spruce in Hiiumaa Island, Estonia

Refereed scientific publications
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2019

Åland churches as archives of tree-ring records sensitive to fluctuating climate

Refereed scientific publications
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2019