People have been recording local climates for centuries, chronicling hot and cold periods as well as resulting floods, famines, and fatal diseases. Now, researchers have examined a wealth of historic documents to learn how climate impacted life in early modern Transylvania, a region that today is part of Romania. They found that after several decades of uncharacteristically high temperatures, the climate changed in favor of excessive rain – and that both climates shaped human lives and societies in their own way.
‘Dear Diary … The Weather Was Bad Today, Even Worse than Yesterday’
Glaciers, sediments, and pollen can be used to reconstruct the climate of the past. Beyond ‘nature’s archive,’, other sources, such as diaries, travel notes, parish or monastery registers, and other written documents – known at the ‘society’s archive’ – contain reports and observations about local climates in bygone centuries. Researchers in Romania used such sources to reconstruct the evolution of the climate and resulting effects on the people who lived in Transylvania in the 16th century, when the period of global cooling known as the ‘Little Ice Age’ was impacting weather across the planet.
“We show that the climate was marked by significant variability, including prolonged periods of drought, heatwaves, and episodes of intense rainfall and flooding,” said Tudor Caciora, a researcher at the University of Oradea and corresponding author of the Frontiers in Climate study. “The study illustrates the complex interplay between heat waves, droughts, floods, and their cascading impacts on agriculture, public health, and societal stability, emphasizing the significant role of climate in shaping human history.”
- The Little Ice Age and Its Giant Impact on Human History
- Renaissance-Gothic Corvin Castle: One of the Seven Wonders of Romania
Delayed Ice Age
The sources tell of a particularly hot and dry first half of the century.
“One compelling passage comes from a historical document describing the summer of 1540: ‘The springs dried up, and the rivers dwindled to mere trickles. Livestock fell in the fields, and the air was thick with despair as the people gathered in processions, praying for rain,’” said Caciora. “This vivid account underscores the emotional and spiritual dimensions of living through climatic extremes.”
Page of Translyvanian diary that details events of the 16th century in this part of modern-day Romania. (Gaceu et al./Frontiers)
In contrast, the second half of the century was characterized by heavy rainfall and floods, particularly in the 1590s.
The western parts of the European continent cooled significantly in the 16th century when the ‘Little Ice Age’ intensified. During the second half of the century, temperatures dropped by 0.5°C. In Transylvania, however, hot weather was recorded much more frequently than cold weather during the 16th century.
This highlights an interesting aspect of the ‘Little Ice Age,’ and that was the way its impact was felt at different times across the globe.
“The European continent was in the midst of manifestation of the LIA, made concrete by the cooling of the weather and the expansion of the mountain glaciers,” the study authors noted in their Frontiers in Climate article. However, many works indicate that the LIA manifested differently over time, characterized by great temporal and spatial variability.”
“Thus, the LIA would have manifested itself most strongly in the 15th century in the central and eastern Pacific, in the 17th century in Europe (especially the central and eastern), and in the southeast of North America, respectively in the 19th century on the coasts of Alaska and the rest of the remaining regions,” they continued. “Therefore, on the territory of Transylvania, it is possible that the period of maximum manifestation of LIA was individualized in the 17th century, and in the 16th century it was manifested with a lower intensity.”
In fact, the researchers explain, other scientists who’ve looked at the climate of Transylvania in the 17th and early 18th centuries found that in comparison to Germany, Austria and Switzerland in the same period, it was much colder.
- Bran Castle, Better Known As Dracula’s Castle, Has A Long History!
- Did Climate Change Cause the Demise of the Ancient Indus Valley Civilization?
Climate Catastrophes of the Past
Such weather variations often resulted in catastrophes, related directly or indirectly to the climate. These included 30 years during which the Black Death ravaged the land, 23 years or famine, and nine years during which locust invasions were recorded.
However tragic, weather extremes and resulting calamities could have driven changes in settlement patterns, the researchers said. “Towns might have adopted flood-resistant infrastructure or migrated to more favorable areas. The challenges might also have spurred technological innovations, such as improved irrigation systems or storage facilities,” Caciora explained.
Chronicles and diaries revealed how people perceived, responded to, and were impacted by severe weather events. (Gaceu et al./Frontiers).
The Human Element
Whatever the objective reality of climate change in the early modern world, how it was experienced is what determines its relevance to the study of human history.
“Chronicles and diaries reveal how people perceived, responded to, and were impacted by these events,” Caciora said, acknowledging the importance of the human element in the study of ancient climate.
Despite the insights it provides, the study faces several limitations, the researchers pointed out. Few people were literate, reports are often subjective, or only true on local scales. In addition, the records are fragmented. For example, the researchers were not able to include any records about 15 years of the 16th century, either because no records existed, or they were too contradictory for inclusion.
Nevertheless, these writings not only provide a glimpse into how people in the past might have lived, but are also relevant for modern climate resilience strategies, particularly in understanding the socio-economic consequences of extreme weather events.
“Studying climate records from the society’s archive is as crucial as analyzing natural proxies,” Caciora explained. “It provides a human-centric perspective on past climatic events.”
Top image: The Triumph of Death by Pieter Bruegel the Elder, circa 1562, depicting terrifying developments in 16th century Europe following a pandemic.
Source: Museo del Prado/Public Domain.
This is an edited version of an article originally published by Frontiers entitled ‘500-year-old Transylvanian diaries show how the Little Ice Age completely changed life and death in the region,' which is republished with their permission.
