Five large volcanic eruptions occurred in the early 19th century. They caused cooling and — as a new study shows — to drying in the monsoon regions and glaciers growing in the Alps. The study shows that the pre-industrial climate was not constant: if one takes this cold period as the starting point for current global warming, the climate has already warmed up more than assumed in the current discussions.
Click here for original story, Volcanoes shaped the climate before humankind
Source: ScienceDaily