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

Samuli Helama, Pekka Saranpää, Charlotte 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 journalArticleScientificpeer-review

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 (delta C-13) 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 delta C-13 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. (C) 2018 Elsevier Ltd. All rights reserved.

Original languageEnglish
JournalQuaternary Science Reviews
Volume204
Pages (from-to)208-215
Number of pages8
ISSN0277-3791
DOIs
Publication statusPublished - 15 Jan 2019
MoE publication typeA1 Journal article-refereed

Fields of Science

  • 1181 Ecology, evolutionary biology

Cite this

Helama, Samuli ; Saranpää, Pekka ; Pearson, Charlotte ; 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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title = "Frost rings in 1627 BC and AD 536 in subfossil pinewood from Finnish Lapland",
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 (delta C-13) 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 delta C-13 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. (C) 2018 Elsevier Ltd. All rights reserved.",
keywords = "1181 Ecology, evolutionary biology",
author = "Samuli Helama and Pekka Saranp{\"a}{\"a} and Charlotte Pearson and Laura Arppe and Jari Holopainen and Harri M{\"a}kinen and Kari Mielik{\"a}inen and Pekka N{\"o}jd and Raimo Sutinen and Jussi-Pekka Taavitsainen and Mauri Timonen and Joonas Uusitalo and Markku Oinonen",
year = "2019",
month = "1",
day = "15",
doi = "10.1016/j.quascirev.2018.11.031",
language = "English",
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Helama, S, Saranpää, P, Pearson, C, Arppe, L, Holopainen, J, Mäkinen, H, Mielikäinen, K, Nöjd, P, Sutinen, R, Taavitsainen, J-P, 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

Frost rings in 1627 BC and AD 536 in subfossil pinewood from Finnish Lapland. / Helama, Samuli; Saranpää, Pekka; Pearson, Charlotte; 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 journalArticleScientificpeer-review

TY - JOUR

T1 - Frost rings in 1627 BC and AD 536 in subfossil pinewood from Finnish Lapland

AU - Helama, Samuli

AU - Saranpää, Pekka

AU - Pearson, Charlotte

AU - Arppe, Laura

AU - Holopainen, Jari

AU - Mäkinen, Harri

AU - Mielikäinen, Kari

AU - Nöjd, Pekka

AU - Sutinen, Raimo

AU - Taavitsainen, Jussi-Pekka

AU - Timonen, Mauri

AU - Uusitalo, Joonas

AU - Oinonen, Markku

PY - 2019/1/15

Y1 - 2019/1/15

N2 - 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 (delta C-13) 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 delta C-13 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. (C) 2018 Elsevier Ltd. All rights reserved.

AB - 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 (delta C-13) 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 delta C-13 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. (C) 2018 Elsevier Ltd. All rights reserved.

KW - 1181 Ecology, evolutionary biology

U2 - 10.1016/j.quascirev.2018.11.031

DO - 10.1016/j.quascirev.2018.11.031

M3 - Article

VL - 204

SP - 208

EP - 215

JO - Quaternary Science Reviews

JF - Quaternary Science Reviews

SN - 0277-3791

ER -