Izvestiya of Saratov University.
ISSN 1819-7663 (Print)
ISSN 2542-1921 (Online)


insolation

Search for Long-period Harmonics of Insolation Changes Caused by Planetary Perturbations of Earth’s Orbit

Coming to the Earth a flux of solar radiation is calculated using of modern numerical methods of celestial mechanics over a time interval of about 6000 years with the sampling interval of one year. The luminosity of the Sun was assumed constant. In the power spectrum of the insolation time series detected harmonic of the synodic period of the Mars, as well as harmonics of the combination frequencies of synodic periods of the planets Venus, Jupiter and Saturn, and the frequency corresponding to the sidereal year.

Periodical Changes in the Atmospheric Pressure, Caused by the Influence of the Space Factors

We carried out the analysis of the power spectrum of the time series of the daily values of the atmospheric pressure measured in high-level Alpine station Jungfraujoch in the time interval from 1968 through 1992.