Regional Analysis Of Climate And Bioclimate
Change In South Italy
Author(s)
A. Capra, P. Porto & B. Scicolone
Abstract
In this paper, monthly values of rainfall (P) and temperature (T) recorded in
Southern Italy (Calabria and Sicily) during the period 1921-2000 are
investigated. In particular, a series of 211 raingauge and 53 temperature stations
are analysed for evidence of trend by using the linear regression and the Kendall
non-parametric test. The tests are applied at a seasonal and annual scale; a spatial
analysis is also carried out at both a regional and sub-regional scale in order to
check the effect of different sub-areas on these trends. An additional
investigation useful for checking the climate change effects on vegetation is also
included analysing bioclimatic parameters such as evapotranspiration and aridity
index. The results obtained confirmed, for the two investigated regions, the
importance of the climatic analysis carried out at a regional scale. In fact, the
tests showed for both the P and T records a strong difference between the two
investigated regions. In particular, the total annual P showed a decreasing and
increasing trend with -344 and 197 mm/100 years respectively in the Tyrrhenian
and Ionian sub-regions of Calabria and a decreasing trend with -179 mm/100
years in Sicily. A decreasing trend is evident in the Tyrrhenian sub-region for the
mean annual values of Tmax (-3.2 °C/100 years) and Tmin (-2.9 °C /100 years); a
different trend is shown in the Ionian sub-region where the mean annual values
of T showed an increase of 2.2 and 0.9 °C /100 years for Tmax and Tmin
respectively. In contrast, a clear increasing trend (1.8 and 2.2 °C /100 years) is
shown for both Tmax and Tmin in Sicily. A detailed analysis involving the
calculation of 10-year moving averages, showed a significant change of trending
after the 1950s for P and after 1970s for T.
Keywords: climate change, precipitation, temperatures, bioclimatic parameters.
Keywords
climate change, precipitation, temperatures, bioclimatic parameters.
Related Book
Other papers in this volume
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