Frost rings in 1627 BC and AD 536 in subfossil pinewood from Finnish Lapland

Samuli Helama, Pekka Saranpää, Charlotte L Pearson, Laura Arppe, Jari Holopainen, Harri Mäkinen, Kari Mielikäinen, Pekka Nöjd, Raimo Sutinen, Jussi Pekka Taavitsainen, Mauri Timonen, Joonas Uusitalo, Markku Oinonen

Research output: Contribution to journalArticle

Abstract

Frost rings can provide direct evidence of anomalously cold summertime conditions on hemispheric scales. Here we report frost rings in subfossil pinewood from Finnish Lapland dated dendrochronologically to AD 536 and 1627 BC. These exact calendar dates have been vividly discussed in the literature in the respective contexts of a cold climate anomaly/dust veil/crop failure/famine/Justinianic Plague and the Minoan eruption of Thera (Santorini). Coinciding anomalies in growth and carbon isotope ratios (δ13C) indicate cold and overcast conditions in these years in Finnish Lapland, typical to conditions induced by volcanic dust veils. This evidence reinforces the view of multiple climatic drivers strongly effecting contemporary societies around AD 536 and provides important new evidence regarding the 1627 BC event. We report a frost ring for this year, and also consider evidence from Lapland for other Thera candidate eruptions in the 16th century BC. The marker years 1560 BC and 1546 BC in bristlecone pine tree rings in North America are positioned within negative departures in our δ13C data. Most likely, the frosts occurred somewhere in July and were driven by dust veils from Northern Hemisphere. Although not indicative of volcanic provenance, frost rings and other dendroclimatic proxies dated to exact calendar years offer important time markers for chronological frameworks which can synchronize archaeological, historical and environmental data to further our understanding of environmental changes at scales that matter to human societies.

LanguageEnglish (US)
Pages208-215
Number of pages8
JournalQuaternary Science Reviews
Volume204
DOIs
StatePublished - Jan 15 2019

Fingerprint

Lapland
subfossil
frost
dust
evidence
volcanic eruption
anomaly
famine
carbon isotope ratio
plague
cold zones
growth rings
tree ring
society
provenance
isotopes
Northern Hemisphere
environmental change
candidacy
Pinus

Keywords

  • Europe
  • Holocene
  • Ice cores
  • Late antiquity
  • Minoan eruption
  • North America
  • Paleoclimatology
  • Scandinavia
  • Tree-rings

ASJC Scopus subject areas

  • Global and Planetary Change
  • Ecology, Evolution, Behavior and Systematics
  • Archaeology
  • Archaeology
  • Geology

Cite this

Helama, S., Saranpää, P., Pearson, C. L., Arppe, L., Holopainen, J., Mäkinen, H., ... Oinonen, M. (2019). Frost rings in 1627 BC and AD 536 in subfossil pinewood from Finnish Lapland. Quaternary Science Reviews, 204, 208-215. https://doi.org/10.1016/j.quascirev.2018.11.031

Frost rings in 1627 BC and AD 536 in subfossil pinewood from Finnish Lapland. / Helama, Samuli; Saranpää, Pekka; Pearson, Charlotte L; Arppe, Laura; Holopainen, Jari; Mäkinen, Harri; Mielikäinen, Kari; Nöjd, Pekka; Sutinen, Raimo; Taavitsainen, Jussi Pekka; Timonen, Mauri; Uusitalo, Joonas; Oinonen, Markku.

In: Quaternary Science Reviews, Vol. 204, 15.01.2019, p. 208-215.

Research output: Contribution to journalArticle

Helama, S, Saranpää, P, Pearson, CL, Arppe, L, Holopainen, J, Mäkinen, H, Mielikäinen, K, Nöjd, P, Sutinen, R, Taavitsainen, JP, Timonen, M, Uusitalo, J & Oinonen, M 2019, 'Frost rings in 1627 BC and AD 536 in subfossil pinewood from Finnish Lapland', Quaternary Science Reviews, vol. 204, pp. 208-215. https://doi.org/10.1016/j.quascirev.2018.11.031
Helama, Samuli ; Saranpää, Pekka ; Pearson, Charlotte L ; Arppe, Laura ; Holopainen, Jari ; Mäkinen, Harri ; Mielikäinen, Kari ; Nöjd, Pekka ; Sutinen, Raimo ; Taavitsainen, Jussi Pekka ; Timonen, Mauri ; Uusitalo, Joonas ; Oinonen, Markku. / Frost rings in 1627 BC and AD 536 in subfossil pinewood from Finnish Lapland. In: Quaternary Science Reviews. 2019 ; Vol. 204. pp. 208-215.
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