The first line of Lord Byron’s poem Darkness reads, “I had a dream, which was not all a dream. The bright sun was extinguish’d.”
Imagine, for a moment, looking up into the sky and witnessing the sight Byron describes. It’s difficult to fathom, given the sun’s powerful rays and how much we rely on them to brighten our days and lift our moods. Byron’s inspiration for this poem was a direct response to his surroundings in the summer of 1816, known as “The Year Without a Summer.” Was it as dreadful as it sounds? Indeed, it was.
Lord Byron wasn’t the only author to remark on the gloominess and winter-like weather conditions. Mary Shelley captured the dark, dreary atmosphere by writing her novel, Frankenstein; or, The Modern Prometheus.
The summerless season of 1816 inspired writers and painters—many paintings from this period depict skies with a reddish hue—but it also confused, frustrated, and saddened people across Europe and North America who had been looking forward to warm, pleasant months. Summer wasn’t coming, and that year, it never would.
The Eruption of Mount Tambora
The year before, global climate anomalies triggered the eruption of a volcano in Indonesia. Mount Tambora became “restless” in 1812 and erupted in April 1815, sending massive ash plumes skyward. According to the U.S. Geological Survey, “The eruption was massive, rated as a 7 on the Volcanic Explosivity Scale of 0–8. By comparison, the volume of magma it erupted was about 40 times greater than that of the 1980 eruption of Mount St. Helens and 10 times greater than that of the 1991 eruption of Pinatubo.”
As the volcano’s plumes rose, they carried small particles of ash and dust into the stratosphere. These particles spread above Indonesia and eventually reached continents far beyond.
Climate scientists now understand that volcanoes like Mount Tambora release a pollutant called sulfur dioxide into the atmosphere during eruptions. Sulfur dioxide is a highly reactive, colorless, and pungent gas. When it mixes with water droplets, it forms sulfuric acid aerosols. According to the University Corporation for Atmospheric Research (UCAR), “The sulfuric acid makes a haze of tiny droplets in the stratosphere that reflects incoming solar radiation, cooling the Earth’s surface. The aerosols can remain in the stratosphere for up to three years, carried by winds and causing significant cooling worldwide. Eventually, the droplets grow large enough to fall to Earth.”
A volcanic eruption that caused profound disruption—perhaps that’s the best way to describe Mount Tambora and its lengthy aftermath.
The Volcano’s Historic Aftermath
The largest volcanic eruption in recorded history caused the Earth’s average global temperature to drop by three degrees. Rainfall intensified, and torrential downpours became frequent. Crop failures led to soaring food prices, and crime became rampant. Hundreds of thousands died from famine or diseases like typhus and dysentery. The summer of 1816 was so cold and miserable that people stayed indoors, waiting for sunlight to return and wondering when the devastation would finally end.
Remember, we’re speaking of a time in history vastly different from our own—a time when people didn’t carry cell phones in their pockets or have immediate access to information via the internet. A blog post published by The Old Farmer’s Almanac notes that people across Europe and North America could only speculate about the cause of the persistent “dry fog.” The publication writes, “Many conjectured that the curious weather was due to the positions of the planets, the distance between Earth and the Moon, or sunspots.” This highlights how people around the world navigated the effects of this volcano without truly understanding what had happened. It’s a far cry from how we handle natural disasters today; we’re well-informed, adequately prepared, and ready to evacuate if necessary.
“The Year Without a Summer” influenced migration patterns and contributed to westward expansion. A mass exodus of farmers in the United States, whose crops had failed, packed up their belongings and moved west in hopes of finding fertile land and a more stable climate.
Reflecting on “The Year Without a Summer”
“The Year Without a Summer” was marked by dark skies, cold temperatures, and widespread hardship. Its ominous nickname underscores the dramatic and devastating consequences felt across much of the Northern Hemisphere. Learning about this event invites reflection on recent natural disasters and our relationship with the environment.
The “volcanic winter” that followed Mount Tambora’s unprecedented eruption is often regarded as a cautionary tale about nature’s power, the consequences of environmental changes, and the vulnerability of humans and the planet.