The regional climate gauge network

The regional rain gauge network has changed greatly in recent years as the mechanical rain gauge stations were replaced by digital stations funded after the tragic landslide event which took place in May 1998 in the area around the town of Sarno (>150 fatalities). The new digital rain gauge network became fully operational in the year 2000. The old network, with inadequate density for forecasting and warning in the event of landslides and floods, is very effective for analysing monthly and yearly data, as it represents a very large, continuous data set. Indeed, it comprises more than 250 stations distributed evenly throughout the area, 110 of which have almost complete data from 1951 and about 40 of which have rainfall data from 1920. The average elevation is approximately 350 m, exceeding 1000 m in only a few locations. By contrast, the region's temperature gauge stations are considerably less numerous, with very few having reliable, continuous data.

In this study a series of yearly and monthly climatic data up to the year 1999 (more than 100 years in some cases), were examined for 110 stations (Fig. 2). Finally, rainfall and temperature data were analysed over the time period 1951-1999. The reason for choosing this time period was mainly the availability of representative climatic data for the Campania area.

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