An information-theoretic approach to extracting climate signals from deep polar ice cores
Paleoclimate records are rich sources of information about the past history of the Earth system. Information theory provides a new means for studying these records. We demonstrate that weighted permutation entropy of water-isotope data from the West Antarctica Ice Sheet (WAIS) Divide ice core reveal...
Published in: | Chaos: An Interdisciplinary Journal of Nonlinear Science |
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craippubl:10.1063/1.5127211 2024-09-15T17:41:47+00:00 An information-theoretic approach to extracting climate signals from deep polar ice cores Garland, Joshua Jones, Tyler R. Neuder, Michael White, James W. C. Bradley, Elizabeth National Science Foundation National Science Foundation 2019 http://dx.doi.org/10.1063/1.5127211 https://pubs.aip.org/aip/cha/article-pdf/doi/10.1063/1.5127211/14621240/101105_1_online.pdf en eng AIP Publishing Chaos: An Interdisciplinary Journal of Nonlinear Science volume 29, issue 10 ISSN 1054-1500 1089-7682 journal-article 2019 craippubl https://doi.org/10.1063/1.5127211 2024-08-15T04:03:26Z Paleoclimate records are rich sources of information about the past history of the Earth system. Information theory provides a new means for studying these records. We demonstrate that weighted permutation entropy of water-isotope data from the West Antarctica Ice Sheet (WAIS) Divide ice core reveals meaningful climate signals in this record. We find that this measure correlates with accumulation (meters of ice equivalent per year) and may record the influence of geothermal heating effects in the deepest parts of the core. Dansgaard-Oeschger and Antarctic Isotope Maxima events, however, do not appear to leave strong signatures in the information record, suggesting that these abrupt warming events may actually be predictable features of the climate’s dynamics. While the potential power of information theory in paleoclimatology is significant, the associated methods require well-dated and high-resolution data. The WAIS Divide core is the first paleoclimate record that can support this kind of analysis. As more high-resolution records become available, information theory could become a powerful forensic tool in paleoclimate science. Article in Journal/Newspaper Antarc* Antarctic Antarctica ice core Ice Sheet West Antarctica AIP Publishing Chaos: An Interdisciplinary Journal of Nonlinear Science 29 10 |
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AIP Publishing |
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English |
description |
Paleoclimate records are rich sources of information about the past history of the Earth system. Information theory provides a new means for studying these records. We demonstrate that weighted permutation entropy of water-isotope data from the West Antarctica Ice Sheet (WAIS) Divide ice core reveals meaningful climate signals in this record. We find that this measure correlates with accumulation (meters of ice equivalent per year) and may record the influence of geothermal heating effects in the deepest parts of the core. Dansgaard-Oeschger and Antarctic Isotope Maxima events, however, do not appear to leave strong signatures in the information record, suggesting that these abrupt warming events may actually be predictable features of the climate’s dynamics. While the potential power of information theory in paleoclimatology is significant, the associated methods require well-dated and high-resolution data. The WAIS Divide core is the first paleoclimate record that can support this kind of analysis. As more high-resolution records become available, information theory could become a powerful forensic tool in paleoclimate science. |
author2 |
National Science Foundation National Science Foundation |
format |
Article in Journal/Newspaper |
author |
Garland, Joshua Jones, Tyler R. Neuder, Michael White, James W. C. Bradley, Elizabeth |
spellingShingle |
Garland, Joshua Jones, Tyler R. Neuder, Michael White, James W. C. Bradley, Elizabeth An information-theoretic approach to extracting climate signals from deep polar ice cores |
author_facet |
Garland, Joshua Jones, Tyler R. Neuder, Michael White, James W. C. Bradley, Elizabeth |
author_sort |
Garland, Joshua |
title |
An information-theoretic approach to extracting climate signals from deep polar ice cores |
title_short |
An information-theoretic approach to extracting climate signals from deep polar ice cores |
title_full |
An information-theoretic approach to extracting climate signals from deep polar ice cores |
title_fullStr |
An information-theoretic approach to extracting climate signals from deep polar ice cores |
title_full_unstemmed |
An information-theoretic approach to extracting climate signals from deep polar ice cores |
title_sort |
information-theoretic approach to extracting climate signals from deep polar ice cores |
publisher |
AIP Publishing |
publishDate |
2019 |
url |
http://dx.doi.org/10.1063/1.5127211 https://pubs.aip.org/aip/cha/article-pdf/doi/10.1063/1.5127211/14621240/101105_1_online.pdf |
genre |
Antarc* Antarctic Antarctica ice core Ice Sheet West Antarctica |
genre_facet |
Antarc* Antarctic Antarctica ice core Ice Sheet West Antarctica |
op_source |
Chaos: An Interdisciplinary Journal of Nonlinear Science volume 29, issue 10 ISSN 1054-1500 1089-7682 |
op_doi |
https://doi.org/10.1063/1.5127211 |
container_title |
Chaos: An Interdisciplinary Journal of Nonlinear Science |
container_volume |
29 |
container_issue |
10 |
_version_ |
1810488031632687104 |