Summary
Series of annual and seasonal temperature and precipitation representing respectively northern and southern Italy are compared for trend, interannual variability and periodicity in the period 1866 –1995. Temperature and precipitation trends are almost always anticorrelated except in winter in the No...
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| Format: | Text |
| Language: | English |
| Published: |
1998
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.504.5019 http://www.dvfu.ru/meteo/library/00650165.pdf |
| Summary: | Series of annual and seasonal temperature and precipitation representing respectively northern and southern Italy are compared for trend, interannual variability and periodicity in the period 1866 –1995. Temperature and precipitation trends are almost always anticorrelated except in winter in the North where an anomalous behavior is evident till about 1980. The result is that the Italian climate has become warmer and drier especially in the South since about 1930. The interannual variability does not present sig-nificant maxima, but only minima that cannot be related to the start of a trend either for temperature or for precipitation. The power spectra of the series show broad significant peaks containing the quasi-biennial oscillation and other well known periodicities probably due to solar cycles or to the North Atlantic ocean-atmosphere oscilla-tion (NAO). 1. |
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