Effects of Space Factors and Resonance of Tidal Harmonics in Surface Air Temperature Datasets
The digital spectral analysis was carried out for centennial datasets of mean daily values of the surface air temperature anomalies at De Bilt and Lugano weather stations. In the power spectra of datasets peaks are found, which are associated with the influence of various terrestrial and space factors: the quasi-biennial oscillation, the pole tide, luni-solar tides, the rotation of the Earth - Moon system around the barycenter, and the solar activity. Surprisingly, a great height has a peak corresponding to the resonance 2 Mf - 3 Mm of frequencies of the fortnightly, Mf and the monthly, Mm tidal potential harmonics.