Abstract
We compare the dynamics of the intensity of the global electromagnetic (Schumann) resonance monitored in Japan with the global ground surface temperature (GST) over the period from November 1998 to May 2002. It is shown that the Schumann resonance (SR) intensity varies coherently with the ground surface temperature at mid-latitudes: the relevant cross-correlation coefficient exceeds 0.8. The linear correlation of data decreases with a decreasing latitude interval. We applied the principal component analysis (PCA) to distinguish inter-annual trends (anomalies) in the records from the periodic annual and semi-annual variations. The annual component of the SR intensity behaves similarly to the mid-latitude GST, while the inter-annual variations in the electromagnetic data are similar to those of the GST in the tropics. The regression analysis allowed us to obtain the analytical expressions relating the SR intensity with both the mid-latitude and low-latitude GST. Application of these equations allowed us to retrieve the observed SR pattern from the ground surface temperature and to “reconstruct” the variations in the tropical GST from recorded SR intensity.
Published Version
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