Changes in North Atlantic Oscillation drove Population Migrations and the Collapse of the Western Roman Empire

Abstract Shifts in the North Atlantic Oscillation (NAO) from 1–2 to 0–1 in four episodes increased droughts on the Roman Empire’s periphery and created push factors for migrations. These climatic events are associated with the movements of the Cimbri and Teutones from 113–101 B.C., the Marcomanni an...

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Autor principal:	B. Lee Drake
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/67b1c324c2e54eea8bfbd7e19e4c2203
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spelling	oai:doaj.org-article:67b1c324c2e54eea8bfbd7e19e4c22032021-12-02T11:52:25ZChanges in North Atlantic Oscillation drove Population Migrations and the Collapse of the Western Roman Empire10.1038/s41598-017-01289-z2045-2322https://doaj.org/article/67b1c324c2e54eea8bfbd7e19e4c22032017-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-01289-zhttps://doaj.org/toc/2045-2322Abstract Shifts in the North Atlantic Oscillation (NAO) from 1–2 to 0–1 in four episodes increased droughts on the Roman Empire’s periphery and created push factors for migrations. These climatic events are associated with the movements of the Cimbri and Teutones from 113–101 B.C., the Marcomanni and Quadi from 164 to 180 A.D., the Goths in 376 A.D., and the broad population movements of the Migration Period from 500 to 600 A.D. Weakening of the NAO in the instrumental record of the NAO have been associated with a shift to drought in the areas of origin for the Cimbri, Quadi, Visigoths, Ostrogoths, Huns, and Slavs. While other climate indices indicate deteriorating climate after 200 A.D. and cooler conditions after 500 A.D., the NAO may indicate a specific cause for the punctuated history of migrations in Late Antiquity. Periodic weakening of the NAO caused drought in the regions of origin for tribes in antiquity, and may have created a powerful push factor for human migration. While climate change is frequently considered as a threat to sustainability, its role as a conflict amplifier in history may be one of its largest impacts on populations.B. Lee DrakeNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-7 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q B. Lee Drake Changes in North Atlantic Oscillation drove Population Migrations and the Collapse of the Western Roman Empire
description	Abstract Shifts in the North Atlantic Oscillation (NAO) from 1–2 to 0–1 in four episodes increased droughts on the Roman Empire’s periphery and created push factors for migrations. These climatic events are associated with the movements of the Cimbri and Teutones from 113–101 B.C., the Marcomanni and Quadi from 164 to 180 A.D., the Goths in 376 A.D., and the broad population movements of the Migration Period from 500 to 600 A.D. Weakening of the NAO in the instrumental record of the NAO have been associated with a shift to drought in the areas of origin for the Cimbri, Quadi, Visigoths, Ostrogoths, Huns, and Slavs. While other climate indices indicate deteriorating climate after 200 A.D. and cooler conditions after 500 A.D., the NAO may indicate a specific cause for the punctuated history of migrations in Late Antiquity. Periodic weakening of the NAO caused drought in the regions of origin for tribes in antiquity, and may have created a powerful push factor for human migration. While climate change is frequently considered as a threat to sustainability, its role as a conflict amplifier in history may be one of its largest impacts on populations.
format	article
author	B. Lee Drake
author_facet	B. Lee Drake
author_sort	B. Lee Drake
title	Changes in North Atlantic Oscillation drove Population Migrations and the Collapse of the Western Roman Empire
title_short	Changes in North Atlantic Oscillation drove Population Migrations and the Collapse of the Western Roman Empire
title_full	Changes in North Atlantic Oscillation drove Population Migrations and the Collapse of the Western Roman Empire
title_fullStr	Changes in North Atlantic Oscillation drove Population Migrations and the Collapse of the Western Roman Empire
title_full_unstemmed	Changes in North Atlantic Oscillation drove Population Migrations and the Collapse of the Western Roman Empire
title_sort	changes in north atlantic oscillation drove population migrations and the collapse of the western roman empire
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/67b1c324c2e54eea8bfbd7e19e4c2203
work_keys_str_mv	AT bleedrake changesinnorthatlanticoscillationdrovepopulationmigrationsandthecollapseofthewesternromanempire
_version_	1718395050228973568

Changes in North Atlantic Oscillation drove Population Migrations and the Collapse of the Western Roman Empire

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