Insolation Periods of Climate Change as a Means of Solving Long-Term Climatic Puzzles

Institute of Earth’s Cryosphere, Tyum. SC of SB RAS, Federal Research Center, Tumen, Russia

Abstract: The results of the new Astronomical theory of climate change are considered. Earth insolation depends on the eccentricity of the Earth's orbit, the position of the perihelion and the inclination of the equator to the orbit. Changes in these three parameters are shown for time of 5 million years ago. A change in the insolation of the Earth over 1 million years is considered, and the results are compared with the previous theory. It is shown that the change in insolation in high latitudes from the cold to the warm epoch changes in twice. Insolation periods of climate change have been introduced. They coincide with the known warming and cooling of the paleoclimate. The geography of the onset and end of polar days and nights in different epochs is considered. The presented results are a reliable means of solving the paleoclimate puzzles associated with its long-period changes.