  This study aims to present an overview of how climate change brought about by
events such as earthquakes, volcanic eruptions, flares and variations in solar
activity, etc. have characterized the area of central Italy, analyzing and
comparing astronomical, geological, meteorological, seismological, historical
and climatic data, taking as reference some specific locations in the period
between 1250 and 1350. The ultimate goal is to understand how long-term
climatic and geological events in this geographical area have changed the
territory both from a natural and anthropic point of view, leading to highlight
the occurrence of extreme events such as wave of plague of the period
1347-1351. The analysis is performed using a statistical-historical approach
and particular attention is paid to minimize any effect due to the error in the
event of a lack of data.
