Trends in the Mediterranean rainfall
The trends appearing in the annual rainfall of the 14 selected coastal and island stations of the Mediterranean were invetigated by running 30-year averages. The periods used as well as the standard deviation, the average variability and the coefficient of variation of the annual rainfall are given for each of the 14 stations. It was found that in the majority of the stations upward and downward trends in the annual rainfall appeared but in a few only stations these trends coincide in the same intervals. A relative similarity appeared in the stations of Marseille-Trieste, Malta-Tunis, Gibraltar-Rome, Nicosia-Limassol and Beyrut-Alexandria. By examination of the three more important maxima and minima in the course of rainfall it was observed that many of them coincide simultaneously at about the same time in the different stations and also that these coincidences occurred near the maximum or minimum of sunspots.
KeywordsStandard Deviation Annual Rainfall Downward Trend Relative Similarity Island Station
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- (1).Biel E. R.:Climatology of the Mediterranean area. Publ. of the Inst. of Meteor. of the Univ. of Chicago. Misc. Rep., No. 13, 1944.Google Scholar
- (2).Biel E. R.:Die Veränderlichkeit der Jahressumme des Niederschlages auf der Erde. Geogr. Jahresber. aus Oesterreich, Wien 1929.Google Scholar
- (3).Carapiperis L. N.:Trends in Athens rainfall. Geofisica pura e applicata, Vol. 38, 1957.Google Scholar
- (4).Hesselberg Th. & Birkeland B. I.:Säkulare Schwankungen des Klimas von Norwegen. Geof. Publ. Vol. XIV, No. 5.Google Scholar