The ‘flickering switch’ of late Pleistocene climate change revisited
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 E...
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American Geophysical Union
2005
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ftunivcardiff:oai:https://orca.cardiff.ac.uk:11143 2023-05-15T16:28:47+02:00 The ‘flickering switch’ of late Pleistocene climate change revisited Barker, Stephen 2005 application/pdf https://orca.cardiff.ac.uk/id/eprint/11143/ https://doi.org/10.1029/2005GL024486 https://orca.cardiff.ac.uk/id/eprint/11143/1/Barker%202005.pdf en eng American Geophysical Union https://orca.cardiff.ac.uk/id/eprint/11143/1/Barker%202005.pdf Barker, Stephen https://orca.cardiff.ac.uk/view/cardiffauthors/A015364W.html orcid:0000-0001-7870-6431 orcid:0000-0001-7870-6431 2005. The ‘flickering switch’ of late Pleistocene climate change revisited. Geophysical Research Letters 32 (24) , L24703. 10.1029/2005GL024486 https://doi.org/10.1029/2005GL024486 file https://orca.cardiff.ac.uk/11143/1/Barker%202005.pdf doi:10.1029/2005GL024486 GC Oceanography QE Geology Article PeerReviewed 2005 ftunivcardiff https://doi.org/10.1029/2005GL024486 2022-10-20T22:34:33Z 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. Article in Journal/Newspaper Greenland Greenland ice cores ice core Cardiff University: ORCA (Online Research @ Cardiff) Greenland Geophysical Research Letters 32 24 |
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Open Polar |
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Cardiff University: ORCA (Online Research @ Cardiff) |
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ftunivcardiff |
language |
English |
topic |
GC Oceanography QE Geology |
spellingShingle |
GC Oceanography QE Geology Barker, Stephen The ‘flickering switch’ of late Pleistocene climate change revisited |
topic_facet |
GC Oceanography QE Geology |
description |
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. |
format |
Article in Journal/Newspaper |
author |
Barker, Stephen |
author_facet |
Barker, Stephen |
author_sort |
Barker, Stephen |
title |
The ‘flickering switch’ of late Pleistocene climate change revisited |
title_short |
The ‘flickering switch’ of late Pleistocene climate change revisited |
title_full |
The ‘flickering switch’ of late Pleistocene climate change revisited |
title_fullStr |
The ‘flickering switch’ of late Pleistocene climate change revisited |
title_full_unstemmed |
The ‘flickering switch’ of late Pleistocene climate change revisited |
title_sort |
‘flickering switch’ of late pleistocene climate change revisited |
publisher |
American Geophysical Union |
publishDate |
2005 |
url |
https://orca.cardiff.ac.uk/id/eprint/11143/ https://doi.org/10.1029/2005GL024486 https://orca.cardiff.ac.uk/id/eprint/11143/1/Barker%202005.pdf |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Greenland ice cores ice core |
genre_facet |
Greenland Greenland ice cores ice core |
op_relation |
https://orca.cardiff.ac.uk/id/eprint/11143/1/Barker%202005.pdf Barker, Stephen https://orca.cardiff.ac.uk/view/cardiffauthors/A015364W.html orcid:0000-0001-7870-6431 orcid:0000-0001-7870-6431 2005. The ‘flickering switch’ of late Pleistocene climate change revisited. Geophysical Research Letters 32 (24) , L24703. 10.1029/2005GL024486 https://doi.org/10.1029/2005GL024486 file https://orca.cardiff.ac.uk/11143/1/Barker%202005.pdf doi:10.1029/2005GL024486 |
op_doi |
https://doi.org/10.1029/2005GL024486 |
container_title |
Geophysical Research Letters |
container_volume |
32 |
container_issue |
24 |
_version_ |
1766018463064653824 |