The changes in temperature associated with solar activity is lower in in the dense troposphere and higher in the mesosphere. The circulation pattern of the lower and middle atmosphere also found to be affected in accordance with the solar activity. The study reveals that there is an external forcing exist during the period of high solar activity which compresses the earth's atmosphere. When the atmosphere is forced externally, the relatively less dense upper layers affected more than the dense lower layers. Deterministic part of the spectrum is derived.
Trend is the most prominent.
Our analysis shows that this cycle is a part of longer cycles, periods of which are detected. The powerest trend is described by polynomial in W data. The sharp increase of discrepancies in the Moon's longitudes are observed during this period. Thus, the long-term part of the solar and geomagnetic changes is connected with regularities in the dynamics of the solar system. It is shown that tidal forces of the planets can cause common resonance periods in these spectra.