Barker, Stephen ORCID: https://orcid.org/0000-0001-7870-6431 2005. The ‘flickering switch’ of late Pleistocene climate change revisited. Geophysical Research Letters 32 (24) , L24703. 10.1029/2005GL024486 |
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Abstract
Extremely rapid fluctuations observed in records of electrical conductivity measurements (ECM) from Greenland ice-cores provoked the idea that the climate system may be capable of flickering between two states during rapid climate transitions. Here it is shown that in general, the flickers seen in ECM records probably reflect the highly non-linear response of electrical conductivity as ice approaches acid/base neutrality, rather than significant changes in the climate system. High frequency, relatively low amplitude changes in chemistry, superimposed upon the broader changes typical of climate transitions would be capable of producing the observed characteristics of ECM records. It must be stated that this result does not detract from the observation of extremely rapid changes in, for example, ice core chemistry and isotopes, which clearly demonstrate that Earth's climate is capable of very rapid and major reorganisations.
Item Type: | Article |
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Date Type: | Publication |
Status: | Published |
Schools: | Earth and Environmental Sciences |
Subjects: | G Geography. Anthropology. Recreation > GC Oceanography Q Science > QE Geology |
Additional Information: | Pdf uploaded in accordance with publisher's policy at http://www.sherpa.ac.uk/romeo/issn/0094-8276/ (accessed 20/02/2014). |
Publisher: | American Geophysical Union |
ISSN: | 0094-8276 |
Date of First Compliant Deposit: | 30 March 2016 |
Last Modified: | 15 May 2023 17:18 |
URI: | https://orca.cardiff.ac.uk/id/eprint/11143 |
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