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Rainfalls during great Forbush decreases |
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| Authors: | Yu. I. Stozhkov J. Zullo I. M. Martin G. Q. Pellegrino H. S. Pinto G. A. Bazilevskaya P. C. Bezerra V. S. Makhmutov N. S. Svirzevsky A. Turtelli |
| Affiliation: | (1) P. N. Lebedev Physical Institute, Russian Academy of Sciences, Leninsky Prospect, 53, 117924 Moscow, Russia;(2) University of Campinas, IFGW-DRCC, CEPAGRI, CP6165, 13081-970 Campinas, Brazil |
| Abstract: | Summary The changes of rainfall values during great Forbush decreases recorded by the low-latitudinal neutron monitor of Huancayo (47 events from 1956 through 1992) were examined. The data on precipitations were taken from the State of S?o Paulo and from the Amazonian region, Brazil. As a rule, the data from more than 50 meteorological stations were used for each events. The main result is the following: during strong decreases of cosmic-ray flux in the atmosphere (great Forbush decreases) the precipitation value is decreased. The effect of rainfall changes is seen more distinctly if wet seasons are considered. |
| Keywords: | Water in the atmosphere humidity clouds evaporation precipitation |
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