The Carrington event not observed in most ice core nitrate records

Bigler, M. (2012). The Carrington event not observed in most ice core nitrate records. Geophysical Research Letters, 39(8), L08503. Washington, D.C.: American Geophysical Union 10.1029/2012GL051603

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The Carrington Event of 1859 is considered to be among the largest space weather events of the last 150 years. We show that only one out of 14 well-resolved ice core records from Greenland and Antarctica has a nitrate spike dated to 1859. No sharp spikes are observed in the Antarctic cores studied here. In Greenland numerous spikes are observed in the 40 years surrounding 1859, but where other chemistry was measured, all large spikes have the unequivocal signal, including co-located spikes in ammonium, formate, black carbon and vanillic acid, of biomass burning plumes. It seems certain that most spikes in an earlier core, including that claimed for 1859, are also due to biomass burning plumes, and not to solar energetic particle (SEP) events. We conclude that an event as large as the Carrington Event did not leave an observable, widespread imprint in nitrate in polar ice. Nitrate spikes cannot be used to derive the statistics of SEPs.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Physics Institute > Climate and Environmental Physics

UniBE Contributor:

Bigler, Matthias

ISSN:

0094-8276

Publisher:

American Geophysical Union

Language:

English

Submitter:

Factscience Import

Date Deposited:

04 Oct 2013 14:44

Last Modified:

06 Dec 2015 21:10

Publisher DOI:

10.1029/2012GL051603

Additional Information:

Kollaboration. Es sind nur Berner Autoren namentlich erwähnt.

BORIS DOI:

10.7892/boris.18152

URI:

https://boris.unibe.ch/id/eprint/18152 (FactScience: 226018)

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