CNN  — 

It happened more than two centuries ago, but its impact remains enormous. Historians have credited the infamous “year without a summer” of 1816, at least indirectly, with the invention of the bicycle and the writing of the classic novel “Frankenstein.”

In April of 1815, Mount Tambora exploded in a powerful eruption that killed tens of thousands of people on the Indonesian island of Sumbawa. The following year became known as the “year without a summer” when unusually cold, wet conditions swept across Europe and North America.

Since 1913, researchers have suggested that the two events were linked. Now a new study shows that the cold summer temperatures of 1816 wouldn’t have been possible without the volcanic eruption. The research published Tuesday in the journal Environmental Research Letters.