1808 mystery eruption
The 1808 mystery eruption is one or potentially multiple unidentified volcanic eruptions that resulted in a significant rise in stratospheric sulfur aerosols, leading to a period of global cooling analogous to the Year Without a Summer in 1816. == Background == Until the 1990s, climatologists considered the known deterioration of the weather in the early 1810s as a normal phenomenon of the Little Ice Age.