Theoretical and Applied Climatology

, Volume 45, Issue 3, pp 201–207 | Cite as

Rainfall fluctuations over Italy and their association with solar activity

  • A. Mazzarella
  • F. Palumbo


Selected records from hundreds of raingauges located along the river basins of the largest Italian rivers, throughout the whole of Italy, show a fairly similar interannual variability. Analysis of the historical time series of these data determined very significant 11-yr, 22-yr and 44-yr variabilities that are possibly linked to coherent fluctuations in the high-speed solar wind precipitation into the atmosphere. The combined effect of such signals is found to explain 60% of the yearly rainfall variance.


Precipitation Climate Change Time Series Waste Water River Basin 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Bath, M., 1974:Spectral Analysis in Geophysics. New York: Elsevier Publishing Company, 563 pp.Google Scholar
  2. Bendat, J. S., Piersol, A. C., 1971:Random Data Analysis: Measurement Procedures. New York: Wiley-Interscience, 407 pp.Google Scholar
  3. Bhalme, H. N., Mooley, D. A., 1981: Cyclic fluctuations in the flood area and relationship with the double (Hale) sunspot cycle.J. Appl. Meteor. 20, 1041–1048.Google Scholar
  4. Bravo, S., Otaola, J. A., 1989: Polar coronal holes and the sunspot cycle. A new method to predict sunspot numbers.Solar Phys. 122, 335–343.Google Scholar
  5. Bravo, S., Mendoza, B., Perez-Enriquez, R., Valdez-Galicia, J., 1988: On the role of equatorial coronal holes in cosmic ray modulation.Ann. Geophys. 6, 377–380.Google Scholar
  6. Bucha, V., 1988: Influence of solar activity on atmospheric circulations types.Ann. Geophys. 6, 513–524.Google Scholar
  7. Eddy, J. A., 1976: The Maunder minimum.Science 192, 1189–1202.Google Scholar
  8. Fairbridge, R. W., Hillaire-Marcel, C., 1977: An 8,000-yr palaeoclimatic record of the ‘Double-Hale’ 45-yr solar cycle.Nature 268, 413–416.Google Scholar
  9. Hirman, J. W., Heckman, G. R., Greer, M. S., Smith, J. B., 1988: Solar and geomagnetic activity during cycle 21 and implications for cycle 22.EOS 69, 962–973.Google Scholar
  10. NOAA: A catalog of sunspot index, 1989.Google Scholar
  11. Maheras, P., 1988: Changes in precipitation conditions in the Western Mediterranean over the last century.J. Climatol. 8, 179–189.Google Scholar
  12. Mazzarella, A., Palumbo, A., 1989: Does the solar cycle modulate seismic and volcanic activity?.J. Volc. Geoth. Res. 39, 89–93.Google Scholar
  13. Mitchel, J. M. Jr, Stockton C. W., Meko, D. M., 1979: Evidence of a 22-year rhythm of drought in the Western United States related to the Hale solar cycle since the 17th century. In: McCormac, B. M., Seliga T. A. (eds.)Solar-Terrestrial Influences on Weather and Climate. Dordrecht, Holland: D. Reidel, pp. 125–128.Google Scholar
  14. Palumbo, A., Mazzarella, A., 1980: Rainfall statistical properties in Naples.Mon. Wea. Rev. 108, 1041–1045.Google Scholar
  15. Palumbo, A., Mazzarella, A., 1985: Seasonal cycle of mean sea level.Il Nuovo Cimento C 8, 273–281.Google Scholar
  16. Pittock, A. B., 1978: A critical look at long term sun-weather relationships.Rev. Geophys. Space Phys. 16, 400–420.Google Scholar
  17. Pittock, A. B., 1983: Solar variability, weather and climate: an update.Quart. J. Roy. Meteor. Soc. 109, 23–55.Google Scholar
  18. Reddy, R. S., Nerolla, V. R., Godson, W. L., 1989: The solar cycle and Indian rainfall.Theor. Appl. Climatol. 39, 194–198.Google Scholar
  19. Sargent III H. H., 1979: A geomagnetic activity recurrence index. In: McCormac, B. M., Seliga, T. A. (eds.)Solar-Terrestrial Influences on Weather and Climate. Dordrecht, Holland: D. Reidel, pp. 101–104.Google Scholar
  20. Schuurmans, C. J. E., 1979: Effects of solar flares on the atmospheric circulation. In: McCormac, B. M., Seliga, T. A. (eds.)Solar-Terrestrial Influences on Weather and Climate. Dordrecht, Holland: D. Reidel, pp. 105–108.Google Scholar
  21. Vines, R. G., 1986: Rainfall patterns in India.J. Climatol. 6, 135–139.Google Scholar
  22. Vines, R. G., Tomlinson, A. I., 1980: An analysis of New Zealand's rainfall.N. Z. J. Sci. 23, 205–216.Google Scholar

Copyright information

© Springer-Verlag 1992

Authors and Affiliations

  • A. Mazzarella
    • 1
  • F. Palumbo
    • 1
  1. 1.Department of Geophysics and VolcanologyUniversity of Naples “Federico II”NaplesItaly

Personalised recommendations