CHANGES IN THE EARTH’S INSOLATION DURING THE HOLOCENE
V.M. Fedorov1, D.M. Frolov1, E.A. Agafonova2
1Lomonosov Moscow State University, Faculty of Geography, Moscow, Russia
2Shirshov Institute of Oceanology, Russian Academy of Science, Moscow, Russia
Keywords: climate change, insolation, insolation temperatures, surface air temperature, insolation contrast, meridional temperature gradient, trends and causes of change
Abstract
Changes in the Earth’s insolation by latitudes and seasons in certain periods of the Holocene are considered. A comparative analysis of insolation in boundary years of Holocene geochronological periods with modern insolation (2022) is carried out. The change in summer insolation in the hemispheres is analyzed separately. Quantitative estimates in the intensity of insolation’s changes in the Holocene are assessed with respect to the modern insolation. The extremes of summer insolation in the Northern hemisphere are synchronized with the global paleogeographic events of the Holocene: the transition from the cold Pleistocene epoch to the warm Holocene and the Little Ice Age. Characteristics of the Earth’s orbital motion have also been shown to control the Northern hemisphere summer insolation’s change, which is a factor of the noted global paleogeographic events.
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