Nonlinear causal dependencies as a signature of the complexity of the climate dynamics
<p>Nonlinear quadratic dynamical dependencies of large-scale climate modes are disentangled through the analysis of the rate of information transfer. Eight dominant climate modes are investigated, covering the tropics and extratropics over the North Pacific and Atlantic. A clear signature of n...
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Copernicus Publications
2025-05-01
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| Series: | Earth System Dynamics |
| Online Access: | https://esd.copernicus.org/articles/16/703/2025/esd-16-703-2025.pdf |
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| author | S. Vannitsem S. Vannitsem X. S. Liang X. S. Liang C. A. Pires |
| author_facet | S. Vannitsem S. Vannitsem X. S. Liang X. S. Liang C. A. Pires |
| author_sort | S. Vannitsem |
| collection | DOAJ |
| description | <p>Nonlinear quadratic dynamical dependencies of large-scale climate modes are disentangled through the analysis of the rate of information transfer. Eight dominant climate modes are investigated, covering the tropics and extratropics over the North Pacific and Atlantic. A clear signature of nonlinear influences at low frequencies (timescales larger than 1 year) is emerging, while high frequencies are only affected by linear dependencies. These results point to the complex nonlinear collective behaviour at the global scale of the climate system at low frequencies, supporting earlier views that regional climate modes are local expressions of global intricate low-frequency-variability (LFV) dynamics, which are still to be fully uncovered.</p> |
| format | Article |
| id | doaj-art-dd7ad3975b2e4d5caad78ae7f13dfec4 |
| institution | OA Journals |
| issn | 2190-4979 2190-4987 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Earth System Dynamics |
| spelling | doaj-art-dd7ad3975b2e4d5caad78ae7f13dfec42025-08-20T02:25:39ZengCopernicus PublicationsEarth System Dynamics2190-49792190-49872025-05-011670371910.5194/esd-16-703-2025Nonlinear causal dependencies as a signature of the complexity of the climate dynamicsS. Vannitsem0S. Vannitsem1X. S. Liang2X. S. Liang3C. A. Pires4Royal Meteorological Institute of Belgium, Avenue Circulaire, 3, 1180 Brussels, BelgiumDivision of Frontier Research, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, ChinaDivision of Frontier Research, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, ChinaCMA–FDU Joint Laboratory of Marine Meteorology, Department of Atmospheric and Oceanic Sciences, Fudan University, Shanghai, ChinaInstituto Dom Luiz, Faculdade de Ciências, Universidade de Lisboa, Lisbon, Portugal<p>Nonlinear quadratic dynamical dependencies of large-scale climate modes are disentangled through the analysis of the rate of information transfer. Eight dominant climate modes are investigated, covering the tropics and extratropics over the North Pacific and Atlantic. A clear signature of nonlinear influences at low frequencies (timescales larger than 1 year) is emerging, while high frequencies are only affected by linear dependencies. These results point to the complex nonlinear collective behaviour at the global scale of the climate system at low frequencies, supporting earlier views that regional climate modes are local expressions of global intricate low-frequency-variability (LFV) dynamics, which are still to be fully uncovered.</p>https://esd.copernicus.org/articles/16/703/2025/esd-16-703-2025.pdf |
| spellingShingle | S. Vannitsem S. Vannitsem X. S. Liang X. S. Liang C. A. Pires Nonlinear causal dependencies as a signature of the complexity of the climate dynamics Earth System Dynamics |
| title | Nonlinear causal dependencies as a signature of the complexity of the climate dynamics |
| title_full | Nonlinear causal dependencies as a signature of the complexity of the climate dynamics |
| title_fullStr | Nonlinear causal dependencies as a signature of the complexity of the climate dynamics |
| title_full_unstemmed | Nonlinear causal dependencies as a signature of the complexity of the climate dynamics |
| title_short | Nonlinear causal dependencies as a signature of the complexity of the climate dynamics |
| title_sort | nonlinear causal dependencies as a signature of the complexity of the climate dynamics |
| url | https://esd.copernicus.org/articles/16/703/2025/esd-16-703-2025.pdf |
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