On the alleged coherence between the global temperature and the sun's movement

Abstract

It has recently been claimed that there is significant coherence between the spectral peaks of the global temperature series over the last 160 years and those of the speed of the solar center of mass at periods of 10-10.5, 20-21, 30 and 60-62 years. Here it is shown that these claims are based on a comparison between spectral peaks in spectral estimates that assume that the global temperature data contains time-invariant spectral lines. However, time-frequency analysis using both windowed periodograms and the maximum entropy method shows that this is not the case. An estimate of the magnitude squared coherence shows instead that under certain conditions only coherence at a period of 15-17 years can be found in the data. As this result builds on a low number of independent averages and also is unwarranted from any physical model it is doubtful whether it is significant.

5 figures, Fig. 3 corrected (as in ver 1). April 2014, Journal of Atmospheric and Solar-Terrestrial Physics

References in corpus (4)

• Empirical evidence for a celestial origin of the climate oscillations and its implications
• Multi-scale harmonic model for solar and climate cyclical variation throughout the Holocene based on Jupiter-Saturn tidal frequencies plus the 11-year solar dynamo cycle
• A shared frequency set between the historical mid-latitude aurora records and the global surface temperature
• The long sunspot cycle 23 predicts a significant temperature decrease in cycle 24

Cited by in corpus (6)

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• Global temperatures and sunspot numbers. Are they related? Yes, but non linearly. A reply to Gil-Alana et al. (2014)
• Reply on Comment on "High resolution coherence analysis between planetary and climate oscillations" by S. Holm