
Jane Austen’s last summer before she died was a miserable one in terms of weather. Popularly known as “The Year Without a Summer,” 1816’s unusual weather pattern began half a world away. On April 1815, Mount Tambora erupted on the Indonesian island of Sumbawa. There had been a great deal of volcanic activity in the region between 1812 and 1817, but the gigantic eruption that blew the mountain’s top off on April 12th, 1815 spewed an enormous amount of volcanic debris into the upper atmosphere, blocking the sun with tiny particles of dust and affecting global temperatures.
After a major explosion, volcanic gas and dust remain in the upper atmosphere. These particulates are then steadily spread around the globe by winds. A catastrophic volcanic event, even a minor one, are “enough to delay the arrival of spring thaws, enough to project killing frosts into the growing season, and enough to shorten the growing window.” (Wickens)


- Find out more about this event in this article: 1816- The Year Without a Summer: An Overview of the Eruption of Mount Tambora, by Simon Wickens.
- Illustration: The Squall, James Gillray, 1808, Princeton University Library Collection
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