Enhanced Wavelet Analysis of Solar Magnetic Activity with Comparison to Global Temperature and the Central England Temperature Record

TL;DR

This paper enhances wavelet analysis of solar magnetic activity, revealing spectral features and correlations with global and regional temperature records, suggesting links between solar activity and climate variations.

Contribution

It introduces an improved wavelet analysis method with deconvolution, providing new insights into solar magnetic spectra and their potential climate correlations.

Findings

Spectral analysis shows odd harmonics of the Hale cycle.

Positive correlation between solar magnetic power and global temperature after 1900.

Shared features between solar activity spectrum and Central England Temperature record.

Abstract

The continuous wavelet transform may be enhanced by deconvolution with the wavelet response function. After correcting for the cone-of-influence, the power spectral density of the solar magnetic record as given by the derectified yearly sunspot number is calculated, revealing a spectrum of odd harmonics of the fundamental Hale cycle, and the integrated instant power is compared to a reconstruction of global temperature in a normalized scatter plot displaying a positive correlation after the turn of the twentieth century. Comparison of the spectrum with that obtained from the Central England Temperature record suggests that some features are shared while others are not, and the scatter plot again indicates a possible correlation.