Synchronous volcanic eruptions and abrupt climate change ~17.7 ka plausibly linked by stratospheric ozone depletion

Joseph R. McConnell; Andrea Burke; Nelia W. Dunbar; Peter Köhler; Jennie L. Thomas; Monica M. Arienzo; Nathan J. Chellman; Olivia J. Maselli; Michael Sigl; Jess F. Adkins; Daniel Baggenstos; John F. Burkhart; Edward J. Brook; Christo Buizert; Jihong Cole-Dai; T. J. Fudge; Gregor Knorr; Hans F. Graf; Mackenzie M. Grieman; Nels Iverson; Kenneth C. McGwire; Robert Mulvaney; Guillaume Paris; Rachael H. Rhodes; Eric S. Saltzman; Jeffrey P. Severinghaus; Jørgen Peder Steffensen; Kendrick C. Taylor; Gisela Winckler

doi:10.1073/pnas.1705595114

Synchronous volcanic eruptions and abrupt climate change ~17.7 ka plausibly linked by stratospheric ozone depletion

Joseph R. McConnell^*, Andrea Burke, Nelia W. Dunbar, Peter Köhler, Jennie L. Thomas, Monica M. Arienzo, Nathan J. Chellman, Olivia J. Maselli, Michael Sigl, Jess F. Adkins, Daniel Baggenstos, John F. Burkhart, Edward J. Brook, Christo Buizert, Jihong Cole-Dai, T. J. Fudge, Gregor Knorr, Hans F. Graf, Mackenzie M. Grieman, Nels IversonKenneth C. McGwire, Robert Mulvaney, Guillaume Paris, Rachael H. Rhodes, Eric S. Saltzman, Jeffrey P. Severinghaus, Jørgen Peder Steffensen, Kendrick C. Taylor, Gisela Winckler

^*Corresponding author af dette arbejde

Is-, Klima- og Geofysik

33 Citationer (Scopus)

Abstract

Glacial-state greenhouse gas concentrations and Southern Hemisphere climate conditions persisted until ~17.7 ka, when a nearly synchronous acceleration in deglaciation was recorded in paleoclimate proxies in large parts of the Southern Hemisphere, with many changes ascribed to a sudden poleward shift in the Southern Hemisphere westerlies and subsequent climate impacts. We used high-resolution chemical measurements in the West Antarctic Ice Sheet Divide, Byrd, and other ice cores to document a unique, ~192-y series of halogen-rich volcanic eruptions exactly at the start of accelerated deglaciation, with tephra identifying the nearby Mount Takahe volcano as the source. Extensive fallout from these massive eruptions has been found >2,800 km from Mount Takahe. Sulfur isotope anomalies and marked decreases in ice core bromine consistent with increased surface UV radiation indicate that the eruptions led to stratospheric ozone depletion. Rather than a highly improbable coincidence, circulation and climate changes extending from the Antarctic Peninsula to the subtropics—similar to those associated with modern stratospheric ozone depletion over Antarctica—plausibly link the Mount Takahe eruptions to the onset of accelerated Southern Hemisphere deglaciation ~17.7 ka.

Originalsprog	Engelsk
Tidsskrift	Proceedings of the National Academy of Sciences of the United States of America
Vol/bind	114
Udgave nummer	38
Sider (fra-til)	10035-10040
Antal sider	6
ISSN	0027-8424
DOI	https://doi.org/10.1073/pnas.1705595114
Status	Udgivet - 2017

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McConnell, J. R., Burke, A., Dunbar, N. W., Köhler, P., Thomas, J. L., Arienzo, M. M., Chellman, N. J., Maselli, O. J., Sigl, M., Adkins, J. F., Baggenstos, D., Burkhart, J. F., Brook, E. J., Buizert, C., Cole-Dai, J., Fudge, T. J., Knorr, G., Graf, H. F., Grieman, M. M., ... Winckler, G. (2017). Synchronous volcanic eruptions and abrupt climate change ~17.7 ka plausibly linked by stratospheric ozone depletion. Proceedings of the National Academy of Sciences of the United States of America, 114(38), 10035-10040. https://doi.org/10.1073/pnas.1705595114

Synchronous volcanic eruptions and abrupt climate change ~17.7 ka plausibly linked by stratospheric ozone depletion. / McConnell, Joseph R.; Burke, Andrea; Dunbar, Nelia W. et al.

I: Proceedings of the National Academy of Sciences of the United States of America, Bind 114, Nr. 38, 2017, s. 10035-10040.

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › peer review

McConnell, JR, Burke, A, Dunbar, NW, Köhler, P, Thomas, JL, Arienzo, MM, Chellman, NJ, Maselli, OJ, Sigl, M, Adkins, JF, Baggenstos, D, Burkhart, JF, Brook, EJ, Buizert, C, Cole-Dai, J, Fudge, TJ, Knorr, G, Graf, HF, Grieman, MM, Iverson, N, McGwire, KC, Mulvaney, R, Paris, G, Rhodes, RH, Saltzman, ES, Severinghaus, JP, Steffensen, JP, Taylor, KC & Winckler, G 2017, 'Synchronous volcanic eruptions and abrupt climate change ~17.7 ka plausibly linked by stratospheric ozone depletion', Proceedings of the National Academy of Sciences of the United States of America, bind 114, nr. 38, s. 10035-10040. https://doi.org/10.1073/pnas.1705595114

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title = "Synchronous volcanic eruptions and abrupt climate change ~17.7 ka plausibly linked by stratospheric ozone depletion",

abstract = "Glacial-state greenhouse gas concentrations and Southern Hemisphere climate conditions persisted until ~17.7 ka, when a nearly synchronous acceleration in deglaciation was recorded in paleoclimate proxies in large parts of the Southern Hemisphere, with many changes ascribed to a sudden poleward shift in the Southern Hemisphere westerlies and subsequent climate impacts. We used high-resolution chemical measurements in the West Antarctic Ice Sheet Divide, Byrd, and other ice cores to document a unique, ~192-y series of halogen-rich volcanic eruptions exactly at the start of accelerated deglaciation, with tephra identifying the nearby Mount Takahe volcano as the source. Extensive fallout from these massive eruptions has been found >2,800 km from Mount Takahe. Sulfur isotope anomalies and marked decreases in ice core bromine consistent with increased surface UV radiation indicate that the eruptions led to stratospheric ozone depletion. Rather than a highly improbable coincidence, circulation and climate changes extending from the Antarctic Peninsula to the subtropics—similar to those associated with modern stratospheric ozone depletion over Antarctica—plausibly link the Mount Takahe eruptions to the onset of accelerated Southern Hemisphere deglaciation ~17.7 ka.",

keywords = "Aerosol, Climate, Deglaciation, Ozone, Volcanism",

author = "McConnell, {Joseph R.} and Andrea Burke and Dunbar, {Nelia W.} and Peter K{\"o}hler and Thomas, {Jennie L.} and Arienzo, {Monica M.} and Chellman, {Nathan J.} and Maselli, {Olivia J.} and Michael Sigl and Adkins, {Jess F.} and Daniel Baggenstos and Burkhart, {John F.} and Brook, {Edward J.} and Christo Buizert and Jihong Cole-Dai and Fudge, {T. J.} and Gregor Knorr and Graf, {Hans F.} and Grieman, {Mackenzie M.} and Nels Iverson and McGwire, {Kenneth C.} and Robert Mulvaney and Guillaume Paris and Rhodes, {Rachael H.} and Saltzman, {Eric S.} and Severinghaus, {Jeffrey P.} and Steffensen, {J{\o}rgen Peder} and Taylor, {Kendrick C.} and Gisela Winckler",

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doi = "10.1073/pnas.1705595114",

language = "English",

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pages = "10035--10040",

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T1 - Synchronous volcanic eruptions and abrupt climate change ~17.7 ka plausibly linked by stratospheric ozone depletion

AU - McConnell, Joseph R.

AU - Burke, Andrea

AU - Dunbar, Nelia W.

AU - Köhler, Peter

AU - Thomas, Jennie L.

AU - Arienzo, Monica M.

AU - Chellman, Nathan J.

AU - Maselli, Olivia J.

AU - Sigl, Michael

AU - Adkins, Jess F.

AU - Baggenstos, Daniel

AU - Burkhart, John F.

AU - Brook, Edward J.

AU - Buizert, Christo

AU - Cole-Dai, Jihong

AU - Fudge, T. J.

AU - Knorr, Gregor

AU - Graf, Hans F.

AU - Grieman, Mackenzie M.

AU - Iverson, Nels

AU - McGwire, Kenneth C.

AU - Mulvaney, Robert

AU - Paris, Guillaume

AU - Rhodes, Rachael H.

AU - Saltzman, Eric S.

AU - Severinghaus, Jeffrey P.

AU - Steffensen, Jørgen Peder

AU - Taylor, Kendrick C.

AU - Winckler, Gisela

PY - 2017

Y1 - 2017

N2 - Glacial-state greenhouse gas concentrations and Southern Hemisphere climate conditions persisted until ~17.7 ka, when a nearly synchronous acceleration in deglaciation was recorded in paleoclimate proxies in large parts of the Southern Hemisphere, with many changes ascribed to a sudden poleward shift in the Southern Hemisphere westerlies and subsequent climate impacts. We used high-resolution chemical measurements in the West Antarctic Ice Sheet Divide, Byrd, and other ice cores to document a unique, ~192-y series of halogen-rich volcanic eruptions exactly at the start of accelerated deglaciation, with tephra identifying the nearby Mount Takahe volcano as the source. Extensive fallout from these massive eruptions has been found >2,800 km from Mount Takahe. Sulfur isotope anomalies and marked decreases in ice core bromine consistent with increased surface UV radiation indicate that the eruptions led to stratospheric ozone depletion. Rather than a highly improbable coincidence, circulation and climate changes extending from the Antarctic Peninsula to the subtropics—similar to those associated with modern stratospheric ozone depletion over Antarctica—plausibly link the Mount Takahe eruptions to the onset of accelerated Southern Hemisphere deglaciation ~17.7 ka.

AB - Glacial-state greenhouse gas concentrations and Southern Hemisphere climate conditions persisted until ~17.7 ka, when a nearly synchronous acceleration in deglaciation was recorded in paleoclimate proxies in large parts of the Southern Hemisphere, with many changes ascribed to a sudden poleward shift in the Southern Hemisphere westerlies and subsequent climate impacts. We used high-resolution chemical measurements in the West Antarctic Ice Sheet Divide, Byrd, and other ice cores to document a unique, ~192-y series of halogen-rich volcanic eruptions exactly at the start of accelerated deglaciation, with tephra identifying the nearby Mount Takahe volcano as the source. Extensive fallout from these massive eruptions has been found >2,800 km from Mount Takahe. Sulfur isotope anomalies and marked decreases in ice core bromine consistent with increased surface UV radiation indicate that the eruptions led to stratospheric ozone depletion. Rather than a highly improbable coincidence, circulation and climate changes extending from the Antarctic Peninsula to the subtropics—similar to those associated with modern stratospheric ozone depletion over Antarctica—plausibly link the Mount Takahe eruptions to the onset of accelerated Southern Hemisphere deglaciation ~17.7 ka.

KW - Aerosol

KW - Climate

KW - Deglaciation

KW - Ozone

KW - Volcanism

U2 - 10.1073/pnas.1705595114

DO - 10.1073/pnas.1705595114

M3 - Journal article

C2 - 28874529

AN - SCOPUS:85029570851

SN - 0027-8424

VL - 114

SP - 10035

EP - 10040

JO - Proceedings of the National Academy of Sciences of the United States of America

JF - Proceedings of the National Academy of Sciences of the United States of America

IS - 38

ER -

Synchronous volcanic eruptions and abrupt climate change ~17.7 ka plausibly linked by stratospheric ozone depletion

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