Latitudinal dependence of helio/geophysical effects on the solar radiation input to the lower atmosphere |
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| Institution: | 1. Water Resources and Environmental Engineering Research Unit, Faculty of Technology, University of Oulu, 90014, Finland;2. School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China;3. Center for Complex Hydrosystems Research, Department of Civil, Construction and Environmental Engineering, University of Alabama, Tuscaloosa, AL 35487, USA |
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| Abstract: | The relationships between the solar radiation input to the lower atmosphere at higher and middle latitudes and different phenomena related to solar activity have been studied at the network of actinometric stations of Russia. It was shown that the effects of galactic cosmic ray variations and solar flares on the half-yearly sums of global radiation strongly depend on latitude, with a negative correlation being observed in the high-latitudinal belt and a positive one at lower latitudes. The change of the correlation sign was found to take place at the latitude ～57°. Auroral phenomena are likely to affect the radiation fluxes only in the high-latitude (auroral) region. The effects observed seem to be due to the latitudinal dependence of cloud cover variations associated with the helio/geophysical phenomena under study. |
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