The Year Without a Summer (also known as the Poverty Year, Year There Was No Summer, and Eighteen Hundred and Froze to Death[1]) was 1816, in which severe summer climate abnormalities caused average global temperatures to decrease by about 0.4–0.7 °C (0.7–1.3 °F),[2] resulting in major food shortages across the Northern Hemisphere.[3][4] It is believed that the anomaly was caused by a combination of a historic low in solar activity with a volcanic winter event, the latter caused by a succession of major volcanic eruptions capped off by the
Mount Tambora eruption of 1815, the largest known eruption in over 1,300 years -
that killed over 100,000 people.
Year Without a Summer
Signs of unrest at the famous Tambora Caldera in Indonesia
