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Published VersionCC BY-NC-ND V4.0, Open Access
Journal article
Is the variability of ENSO due to frequency modulation by the long term variation in solar activity?
Journal of Atmospheric and Solar-Terrestrial Physics, Vol.269, pp.1-12
2025
Abstract
The spectral content of the El Nino Southern Oscillation (ENSO) is broad and complex, a characteristic shared by other climate variables. Spectral analysis of ENSO in different time intervals demonstrated that ENSO is frequency modulated. An analytical model in which the natural period of ENSO is frequency modulated by long term centennial range variation in solar activity was developed and shown to correlate well with the observed ENSO and reconstructed ENSO variation in the decadal periodicity range. A method for identifying the occurrence and the period of frequency modulation in climate variables was developed and tested.
Details
- Title
- Is the variability of ENSO due to frequency modulation by the long term variation in solar activity?
- Authors
- Ian Edmonds (Corresponding Author) - Queensland University of TechnologyPeter Killen
- Publication details
- Journal of Atmospheric and Solar-Terrestrial Physics, Vol.269, pp.1-12
- Publisher
- Elsevier Ltd
- Date published
- 2025
- DOI
- 10.1016/j.jastp.2025.106490
- ISSN
- 1879-1824; 1364-6826
- Copyright note
- © 2025 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license ( http://creativecommons.org/licenses/by- nc-nd/4.0/ ).
- Data Availability
- Data will be made available on request.
- Organisation Unit
- University of the Sunshine Coast, Queensland
- Language
- English
- Record Identifier
- 991127002402621
- Output Type
- Journal article
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