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The main cause of the Year Without a Summer is generally held to be a volcanic winter created by the April 1815 eruption of Mount Tambora on Sumbawa. [7] [8] [9] The eruption had a volcanic explosivity index (VEI) ranking of 7, and ejected at least 37 km 3 (8.9 cu mi) of dense-rock equivalent material into the atmosphere. [10]
In summer 1816, countries in the Northern Hemisphere suffered extreme weather conditions, dubbed the "Year Without a Summer". Average global temperatures decreased by about 0.4 to 0.7 °C (0.7 to 1.3 °F), [8] enough to cause significant agricultural problems around the globe. On 4 June 1816, frosts were reported in the upper elevations of New ...
The central volcano of Bárðarbunga, the Veidivötn and Trollagigar fissures form one volcanic system, which extend about 100 km SW to near Torfajökull volcano and 50 km NE to near Askja volcano, respectively. The subglacial Loki-Fögrufjöll volcanic system located SW of Bárðarbunga volcano is also part of the Bárðarbunga volcanic system ...
Volcanic eruptions don't happen frequently, ... s estimated that 100,000 people died of widespread famine in the ensuing months when much of Europe entered the Year Without Summer. The global ...
3. 1816 – The Year Without a Summer. In April of 1815, Mount Tambora in Indonesia exploded in a powerful eruption that wreaked havoc, disrupted the weather patterns worldwide, and killed tens of ...
Summer temperatures in 536 fell by as much as 2.5 °C (4.5 °F) below normal in Europe. The lingering effect of the volcanic winter of 536 was augmented in 539–540, when another volcanic eruption caused summer temperatures to decline as much as 2.7 °C (4.9 °F) below normal in Europe. [2]
Researchers suspect volcanic eruptions in Central and South America may have led to cold summers in Norway between 1877 and 1902, forming peculiar blue rings in Scandinavian trees and shrubs.
The peak after 1815 was caused by the Mount Tambora 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. [2] [3] [4]