Overview of the Spectral Coherence between Planetary Resonances and Solar and Climate Oscillations

The complex dynamics of solar activity appear to be characterized by a number of oscillations ranging from monthly to multimillennial timescales, the most well-known of which being the 11-year Schwabe sunspot cycle. Solar oscillations are important because they also characterize the oscillations obs...

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Main Authors: Nicola Scafetta, Antonio Bianchini
Format: Article
Language:English
Published: MDPI AG 2023-03-01
Series:Climate
Subjects:
Online Access:https://www.mdpi.com/2225-1154/11/4/77
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author Nicola Scafetta
Antonio Bianchini
author_facet Nicola Scafetta
Antonio Bianchini
author_sort Nicola Scafetta
collection DOAJ
description The complex dynamics of solar activity appear to be characterized by a number of oscillations ranging from monthly to multimillennial timescales, the most well-known of which being the 11-year Schwabe sunspot cycle. Solar oscillations are important because they also characterize the oscillations observed in Earth’s climate and can thus be used to explain and forecast climate changes. Thus, it is important to investigate the physical origin of solar oscillations. There appear to be two possibilities: either the oscillations in solar activity are exclusively controlled by internal solar dynamo mechanisms, or the solar dynamo is partially synchronized to planetary frequencies by planetary forcings. The latter concept has recently gained support from a growing amount of evidence. In this work, we provide an overview of the many empirical facts that would support a planetary hypothesis of the variability of solar activity and emphasize their importance for climate research. We show that the frequencies produced by the complex interactions of all of the planets are coherent with the major solar activity and climate cycles, from monthly to multimillennial timescales, including the well-known Schwabe 11-year solar cycle. We provide some persuasive theoretical and empirical support for the planetary hypothesis of solar and climate variability.
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spelling doaj.art-11802c158356463cbf2fb99d089e47d02023-11-17T18:48:17ZengMDPI AGClimate2225-11542023-03-011147710.3390/cli11040077Overview of the Spectral Coherence between Planetary Resonances and Solar and Climate OscillationsNicola Scafetta0Antonio Bianchini1Department of Earth Sciences, Environment and Georesources, University of Naples Federico II, Complesso Universitario di Monte S. Angelo, via Cinthia, 21, 80126 Napoli, ItalyINAF, Astronomical Observatory of Padua, Vicolo Osservatorio 5, 35122 Padova, ItalyThe complex dynamics of solar activity appear to be characterized by a number of oscillations ranging from monthly to multimillennial timescales, the most well-known of which being the 11-year Schwabe sunspot cycle. Solar oscillations are important because they also characterize the oscillations observed in Earth’s climate and can thus be used to explain and forecast climate changes. Thus, it is important to investigate the physical origin of solar oscillations. There appear to be two possibilities: either the oscillations in solar activity are exclusively controlled by internal solar dynamo mechanisms, or the solar dynamo is partially synchronized to planetary frequencies by planetary forcings. The latter concept has recently gained support from a growing amount of evidence. In this work, we provide an overview of the many empirical facts that would support a planetary hypothesis of the variability of solar activity and emphasize their importance for climate research. We show that the frequencies produced by the complex interactions of all of the planets are coherent with the major solar activity and climate cycles, from monthly to multimillennial timescales, including the well-known Schwabe 11-year solar cycle. We provide some persuasive theoretical and empirical support for the planetary hypothesis of solar and climate variability.https://www.mdpi.com/2225-1154/11/4/77solar activity cyclesclimate oscillationstidal frequenciesorbital oscillations
spellingShingle Nicola Scafetta
Antonio Bianchini
Overview of the Spectral Coherence between Planetary Resonances and Solar and Climate Oscillations
Climate
solar activity cycles
climate oscillations
tidal frequencies
orbital oscillations
title Overview of the Spectral Coherence between Planetary Resonances and Solar and Climate Oscillations
title_full Overview of the Spectral Coherence between Planetary Resonances and Solar and Climate Oscillations
title_fullStr Overview of the Spectral Coherence between Planetary Resonances and Solar and Climate Oscillations
title_full_unstemmed Overview of the Spectral Coherence between Planetary Resonances and Solar and Climate Oscillations
title_short Overview of the Spectral Coherence between Planetary Resonances and Solar and Climate Oscillations
title_sort overview of the spectral coherence between planetary resonances and solar and climate oscillations
topic solar activity cycles
climate oscillations
tidal frequencies
orbital oscillations
url https://www.mdpi.com/2225-1154/11/4/77
work_keys_str_mv AT nicolascafetta overviewofthespectralcoherencebetweenplanetaryresonancesandsolarandclimateoscillations
AT antoniobianchini overviewofthespectralcoherencebetweenplanetaryresonancesandsolarandclimateoscillations