Regional tropospheric responses to long-term solar activity variations |
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| Institution: | 1. St. Petersburg Branch (Filial) of Pushkov Institute of Terrestrial Magnetism, Ionosphere, and Radiowaves Propagation of RAS, 123032, St. Petersburg, Russia;2. Ioffe Physico-Technical Institute of RAS, 194021, St. Petersburg, Russia;3. Polar-Alpian Botanical Garden-Institute, Kola SC, RAS, Apatity, 184000, Murmansk Region, Russia;4. Institute of Physics of the Earth, RAS, 123810, Moscow, Russia;5. Mekrijärvi Research Station, University of Joensuu, FIN-82900, Finland;6. Biology Institute of KomiSC of Ural Bronch, RAS, Syktyvkar, Russia |
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| Abstract: | The influence of ～200-year solar activity variations (de Vries cyclicity) on climatic parameters has been analyzed. Analysis of palaeoclimatic data from different regions of the Earth for the last millennium has shown that ～200-year variations in solar activity give rise to a pronounced climatic response. Owing to a nonlinear character of the processes in the atmosphere–ocean system and the inertia of this system, the climatic response to the global influence of solar activity variations has been found to have a regional character. The regions where the climatic response to long-term solar activity variations is stable and the regions where the climatic response is unstable, both in time and space, have been revealed. It has also been found that a considerable lag of the climatic response and reversal of its sign with respect to the solar signal can occur. Comparison of the obtained results with the simulation predictions of the atmosphere–ocean system response to long-term solar irradiance variations (T > 40 years) has shown that there is a good agreement between experimental and simulation results. |
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